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1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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2 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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4 <head>
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5 <title>SliTaz Handbook (en) - System administration</title>
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6 <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
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7 <meta name="description" content="slitaz English handbook" />
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8 <meta name="expires" content="never" />
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9 <meta name="modified" content="2008-07-18 06:00:00" />
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10 <meta name="publisher" content="www.slitaz.org" />
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11 <meta name="author" content="Christophe Lincoln"/>
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12 <link rel="shortcut icon" href="favicon.ico" />
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13 <link rel="stylesheet" type="text/css" href="book.css" />
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14 </head>
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15 <body bgcolor="#ffffff">
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16
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17 <!-- Header and quick navigation -->
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18 <div id="header">
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19 <div align="right" id="quicknav">
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20 <a name="top"></a>
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21 <a href="x-window.html">X Window System</a> |
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22 <a href="index.html">Table of contents</a>
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23 </div>
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24 <h1><font color="#3E1220">SliTaz Handbook (en)</font></h1>
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25 </div>
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26
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27 <!-- Content. -->
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28 <div id="content">
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29 <div class="content-right"></div>
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30
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31 <h2><font color="#df8f06">System administration</font></h2>
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32
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33 <ul>
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34 <li><a href="#devices">Devices and disk access.</a></li>
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35 <li><a href="#users-admin">Users, groups and passwords.</a></li>
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36 <li><a href="#locale">Language and keyboard.</a></li>
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37 <li><a href="#bash">Install the Bash shell.</a></li>
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38 <li><a href="#editors">Text editors.</a></li>
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39 <li><a href="#time">Set the system time.</a></li>
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40 <li><a href="#cron">Execute scheduled commands.</a></li>
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41 <li><a href="#local.sh">Add commands at boot time.</a></li>
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42 </ul>
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43
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44 <a name="devices"></a>
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45 <h3>Devices and disk access</h3>
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46 <p>
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47 With Linux your disks and USB media are seen as devices. To access them you must
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48 first mount a device on a mount point (directory). On SliTaz you can graphically
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49 mount devices using <code>mountbox</code> or use the command line. To mount the
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50 first disk of a local hard disk on <code>/mnt/disk</code>:
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51 </p>
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52 <pre>
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53 # mkdir -p /mnt/disk
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54 # mount /dev/hda1 /mnt/disk
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55 </pre>
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56 <p>
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57 To mount a cdrom or an USB media you should use mount points located in
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58 <code>/media</code>. Note that for a cdrom, you just have to specify
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59 the device path and for a flash key, the mount point already exists:
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60 </p>
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61 <pre>
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62 # mount /dev/cdrom
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63 # mount /dev/sda1 /media/flash
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64 </pre>
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65 <h4>ntfs filesystem</h4>
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66 <p>
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67 If you need read/write access to Windows ntfs filesystems you must install a
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68 few additional packages from the mirror. The <code>ntfs-3g</code> driver
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69 provides stable access to ntfs partitions and <code>ntfsprogs</code> provides
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70 manipulation tools dependent on <code>fuse</code>. Note that you can format, move or resize
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71 ntfs partitions graphically with Gparted.
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72 </p>
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73
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74 <a name="users-admin"></a>
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75 <h3>Users, groups and passwords</h3>
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76 <p>
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77 To manage users and groups on your SliTaz system you must use the command line,
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78 but file permissions can be changed graphically using the emelFM2 file manager. To
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79 add or remove users and groups you must be root. Root can also change all
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80 user passwords and a single user can only change his/her own password. To add
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81 or remove a user named linux:
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82 </p>
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paul@15
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83 <pre>
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84 # adduser linux
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85 # deluser linux
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86 </pre>
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87 <p>
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88 To add or remove a group you must use <code>addgroup</code> or
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89 <code>delgroup</code>. To change the current user password or change the
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90 password of a specific user, you must use the <code>passwd</code> command:
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91 </p>
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92 <pre>
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93 $ passwd
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94 # passwd username
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95 </pre>
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96 <h4>Audio group</h4>
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97 <p>
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98 If you want a new user to be able to listen to music he must be in the
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99 <code>audio</code> group. To add an existing user to the audio group:
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100 </p>
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101 <pre>
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102 # adduser -G audio user_name
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103 </pre>
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104
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105 <a name="locale"></a>
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106 <h3>Language and keyboard layout</h3>
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107 <p>
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108 SliTaz saves the configuration of the default locale in <code>/etc/locale.conf</code>
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109 which is read by <code>/etc/profile</code> on each login and the keyboard
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110 setting is stored in <code>/etc/kmap.conf</code>. These two files can be
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111 edited with your favorite editor or configured respectively with
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112 <code>tazlocale</code> and <code>tazkmap</code>. You can modify the settings
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113 you chose on the first boot by typing as root administrator:
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114 </p>
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115 <pre>
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116 # tazlocale
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117 Or:
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118 # tazkmap
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119 </pre>
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120 <p>
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121 To check all available locales or your current configuration, you can use the
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122 command <code>locale</code> as a single user or root (C for English):
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123 </p>
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124 <pre>
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125 $ locale -a
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126 $ locale
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127 </pre>
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128
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129 <a name="bash"></a>
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130 <h3>Bash Shell</h3>
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131 <p>
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132 On SliTaz you have the ash and sh shell with a link to Ash, this shell is
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133 provided by Busybox. If you wish to use the Bash (Bourne Again SHell), first
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134 as <code>root</code> install bash, copy the <code>.profile</code> found in your
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135 home directory and rename it <code>.bashrc</code>, then edit the
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136 <code>/etc/passwd</code> file with your favorite text editor and change your
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137 shell to :/bin/bash
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138 </p>
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139 <pre>
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140 # tazpkg get-install bash
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141 # cp /home/hacker/.profile home/hacker/.bashrc
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142 # Note root user: cp /home/hacker/.profile ~/.bashrc
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143 # nano /etc/passwd # :/bin/bash
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144 </pre>
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145 <p>
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146 The next time you login bash will be your default shell, you can confirm this
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147 by typing <code>env</code> in the command line.
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148 </p>
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149
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150 <a name="editors"></a>
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151 <h3>Editors</h3>
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152 <p>
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153 Busybox supplies a clone of vi for normal text editing, but it does have its limitations.
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154 You can install the full vim editor with the command:
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155 </p>
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156 <pre> # tazpkg get-install vim
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157 </pre>
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158 <p>
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159 Or alternatively if you prefer emacs, SliTaz offers a tiny version:
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160 </p>
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161 <pre> # tazpkg get-install emacs
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162 </pre>
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163
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164 <a name="time"></a>
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165 <h3>System Time</h3>
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166 <p>
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167 To know the current system time, you can simply type <code>date</code>. On
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168 SliTaz, the timezone configuration file is saved in <code>/etc/TZ</code>, you
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169 can edit with your favorite text editor or simply <code>echo</code> the changes.
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170 To view the available timezones, you can look in the
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171 <code>/usr/share/zoneinfo</code> directory.
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172 Here's an example using the timezone Europe/London:
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173 </p>
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174 <pre>
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175 # echo "Europe/London" > /etc/TZ
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176 </pre>
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177 <h4>Rdate</h4>
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178 <p>
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179 To syncronize the system clock with a network time server, you can as
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180 <code>root</code> use the <code>rdate -s</code> command:
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181 </p>
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182 <pre>
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183 # rdate -s tick.greyware.com
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184 </pre>
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185 <p>
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186 To display the time on the remote server, use the <code>rdate -p</code> command.
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187 </p>
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188 <pre> $ rdate -p tick.greyware.com
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189 </pre>
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190 <h4>Hwclock</h4>
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191 <p>
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192 Hwclock allows you to syncronize the time of your hardware clock to the system
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193 clock or vice versa.
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194 </p>
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195 <p>
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196 Syncronize the system clock to the hardware clock ( --utc = universal time,
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197 -l = local time):
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198 </p>
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199 <pre>
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200 # hwclock -w --utc
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201 </pre>
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202 <p>
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203 Syncronize the hardware clock to the system clock:
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204 </p>
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205 <pre>
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206 # hwclock -s --utc
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207 </pre>
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208
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209 <a name="cron"></a>
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210 <h3>Execute scheduled commands</h3>
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211 <p>
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212 The daemon 'crond' allows you to run commands automatically at a scheduled specific date or time. This is very
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213 useful for routine tasks such as system administration. The directory cron uses is
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214 <code>/var/spool/cron/crontabs</code>.
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215 </p>
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216 <p>
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217 Each user of the system can have his/her own tasks, they are defined in the file: <code>/var/spool/cron/crontabs/user</code>.
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218 The crontab utility allows you amongst other things, to list the tasks specific to the user. The syntax of the
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219 files is as follows:
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220 </p>
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221 <pre class="script">mm hh dd MMM DDD command > log
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222 </pre>
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223 <p>
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224 We will create a file with root priviledges and test the daemon 'crond' with a task performed every minute -
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225 writing the date to a file /tmp/crond.test. It should be noted that the utility has an option
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226 <code>crontab</code> for editing cron file using 'vi', this is not provided by SliTaz. In its place you can use
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227 GNU nano (<Ctrl+X> to save & exit):
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228 </p>
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229 <pre> # nano /var/spool/cron/crontabs/root
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230 </pre>
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231 <pre class="script">* * * * * date >> /tmp/crond.test
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232 </pre>
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233 <p>
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234 Launch <code>crond</code> with the option <code>-b</code> (background),
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235 configured via <code>/etc/daemons.conf</code> and using the startup script:
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236 </p>
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237 <pre> # /etc/init.d/crond start
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238 </pre>
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239 <p>
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240 You can wait a few minutes and view the contents of the file: /tmp/crond.test... OK:
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241 </p>
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242 <pre> # cat /tmp/crond.test
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243 </pre>
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244 <p>
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245 To stop or restart the daemon crond:
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246 </p>
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247 <pre> # /etc/init.d/crond stop
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248 Or :
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249 # /etc/init.d/crond restart
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250 </pre>
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251 <h4>Invoke the daemon crond on every boot</h4>
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252 <p>
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253 To launch the daemon 'crond' each time you boot the system, just add it to the variable <code>START_DAEMONS</code>
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254 in the configuration file <code>/etc/rcS.conf</code>, either before or after the web server or SSH server.
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255 </p>
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256
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257 <a name="local.sh"></a>
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258 <h3>Add commands to be executed at boot</h3>
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259 <p>
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260 During the boot process, various scripts are executed to configure services, such as the start of the
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261 web server, networking, etc. On SliTaz there is a script <code>/etc/init.d/local.sh</code> which allows
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262 you to add commands to be launched at system startup. You can also create new scripts in /etc/init.d,
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263 their links in /etc/rc.scripts for shell scripts and use /etc/rc.d for links to the startup script daemon in
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264 /etc/rcS.conf:
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265 </p>
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266 <pre> # nano /etc/init.d/local.sh
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267 </pre>
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268
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269 <!-- End of content -->
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270 </div>
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271
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272 <!-- Footer. -->
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273 <div id="footer">
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274 <div class="footer-right"></div>
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275 <a href="#top">Top of the page</a> |
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276 <a href="index.html">Table of contents</a>
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277 </div>
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278
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279 <div id="copy">
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280 Copyright © 2008 <a href="http://www.slitaz.org/en/">SliTaz</a> -
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281 <a href="http://www.gnu.org/licenses/gpl.html">GNU General Public License</a>;<br />
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282 Documentation is under
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283 <a href="http://www.gnu.org/copyleft/fdl.html">GNU Free Documentation License</a>
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pankso@7
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284 and code is <a href="http://validator.w3.org/">valid xHTML 1.0</a>.
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pankso@7
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285 </div>
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pankso@7
|
286
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pankso@7
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287 </body>
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pankso@7
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288 </html>
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