| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
|---|
| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
|---|
| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
|
|---|
| 5 | %general-entities;
|
|---|
| 6 | ]>
|
|---|
| 7 |
|
|---|
| 8 | <sect1 id="ch-system-shadow" role="wrap">
|
|---|
| 9 | <?dbhtml filename="shadow.html"?>
|
|---|
| 10 |
|
|---|
| 11 | <title>Shadow-&shadow-version;</title>
|
|---|
| 12 |
|
|---|
| 13 | <indexterm zone="ch-system-shadow">
|
|---|
| 14 | <primary sortas="a-Shadow">Shadow</primary>
|
|---|
| 15 | </indexterm>
|
|---|
| 16 |
|
|---|
| 17 | <sect2 role="package">
|
|---|
| 18 | <title/>
|
|---|
| 19 |
|
|---|
| 20 | <para>The Shadow package contains programs for handling passwords in a secure
|
|---|
| 21 | way.</para>
|
|---|
| 22 |
|
|---|
| 23 | <segmentedlist>
|
|---|
| 24 | <segtitle>&buildtime;</segtitle>
|
|---|
| 25 | <segtitle>&diskspace;</segtitle>
|
|---|
| 26 |
|
|---|
| 27 | <seglistitem>
|
|---|
| 28 | <seg>&shadow-ch6-sbu;</seg>
|
|---|
| 29 | <seg>&shadow-ch6-du;</seg>
|
|---|
| 30 | </seglistitem>
|
|---|
| 31 | </segmentedlist>
|
|---|
| 32 |
|
|---|
| 33 | </sect2>
|
|---|
| 34 |
|
|---|
| 35 | <sect2 role="installation">
|
|---|
| 36 | <title>Installation of Shadow</title>
|
|---|
| 37 |
|
|---|
| 38 | <note>
|
|---|
| 39 | <para>If you would like to enforce the use of strong passwords, refer to
|
|---|
| 40 | <ulink url="&blfs-root;view/svn/postlfs/cracklib.html"/> for installing
|
|---|
| 41 | Cracklib prior to building Shadow. Then add
|
|---|
| 42 | <parameter>--with-libcrack</parameter> to the <command>configure</command>
|
|---|
| 43 | command below.</para>
|
|---|
| 44 | </note>
|
|---|
| 45 |
|
|---|
| 46 | <para>Fix a bug in the <command>useradd</command> and
|
|---|
| 47 | <command>usermod</command> programs which prevent them from accepting group
|
|---|
| 48 | names rather than group ID numbers to the <option>-g</option> option:</para>
|
|---|
| 49 |
|
|---|
| 50 | <screen><userinput>patch -Np1 -i ../&shadow-useradd-patch;</userinput></screen>
|
|---|
| 51 |
|
|---|
| 52 | <para>Prepare Shadow for compilation:</para>
|
|---|
| 53 |
|
|---|
| 54 | <screen><userinput>./configure --libdir=/lib --sysconfdir=/etc --enable-shared --without-selinux</userinput></screen>
|
|---|
| 55 |
|
|---|
| 56 | <variablelist>
|
|---|
| 57 | <title>The meaning of the configure options:</title>
|
|---|
| 58 |
|
|---|
| 59 | <varlistentry>
|
|---|
| 60 | <term><parameter>--without-selinux</parameter></term>
|
|---|
| 61 | <listitem>
|
|---|
| 62 | <para>Support for selinux is enabled by default, but selinux is not
|
|---|
| 63 | built in a base LFS system. The <command>configure</command> script
|
|---|
| 64 | will fail if this option is not used.</para>
|
|---|
| 65 | </listitem>
|
|---|
| 66 | </varlistentry>
|
|---|
| 67 |
|
|---|
| 68 | </variablelist>
|
|---|
| 69 |
|
|---|
| 70 | <para>Disable the installation of the <command>groups</command> program
|
|---|
| 71 | and its man pages, as Coreutils provides a better version:</para>
|
|---|
| 72 |
|
|---|
| 73 | <screen><userinput>sed -i 's/groups$(EXEEXT) //' src/Makefile
|
|---|
| 74 | find man -name Makefile -exec sed -i '/groups/d' {} \;</userinput></screen>
|
|---|
| 75 |
|
|---|
| 76 | <para>Disable the installation of Chinese and Korean manual pages, since
|
|---|
| 77 | Man-DB cannot format them properly:</para>
|
|---|
| 78 |
|
|---|
| 79 | <screen><userinput>sed -i -e 's/ ko//' -e 's/ zh_CN zh_TW//' man/Makefile</userinput></screen>
|
|---|
| 80 |
|
|---|
| 81 | <para>Shadow supplies other manual pages in a UTF-8 encoding. Man-DB
|
|---|
| 82 | can display these in the recommended encodings by using the
|
|---|
| 83 | <command>convert-mans</command> script which we installed.</para>
|
|---|
| 84 |
|
|---|
| 85 | <screen><userinput> for i in de es fi fr id it pt_BR; do
|
|---|
| 86 | convert-mans UTF-8 ISO-8859-1 man/${i}/*.?
|
|---|
| 87 | done
|
|---|
| 88 |
|
|---|
| 89 | for i in cs hu pl; do
|
|---|
| 90 | convert-mans UTF-8 ISO-8859-2 man/${i}/*.?
|
|---|
| 91 | done
|
|---|
| 92 |
|
|---|
| 93 | convert-mans UTF-8 EUC-JP man/ja/*.?
|
|---|
| 94 | convert-mans UTF-8 KOI8-R man/ru/*.?
|
|---|
| 95 | convert-mans UTF-8 ISO-8859-9 man/tr/*.?</userinput></screen>
|
|---|
| 96 |
|
|---|
| 97 | <para id="shadow-login_defs">Instead of using the default
|
|---|
| 98 | <emphasis>crypt</emphasis> method, use the more secure
|
|---|
| 99 | <emphasis>MD5</emphasis> method of password encryption, which also allows
|
|---|
| 100 | passwords longer than 8 characters. It is also necessary to change the
|
|---|
| 101 | obsolete <filename class="directory">/var/spool/mail</filename> location
|
|---|
| 102 | for user mailboxes that Shadow uses by default to the <filename
|
|---|
| 103 | class="directory">/var/mail</filename> location used currently.</para>
|
|---|
| 104 |
|
|---|
| 105 | <screen><userinput>sed -i -e 's@#MD5_CRYPT_ENAB.no@MD5_CRYPT_ENAB yes@' \
|
|---|
| 106 | -e 's@/var/spool/mail@/var/mail@' etc/login.defs</userinput></screen>
|
|---|
| 107 |
|
|---|
| 108 | <note>
|
|---|
| 109 | <para>If you built Shadow with Cracklib support, run the following:</para>
|
|---|
| 110 |
|
|---|
| 111 | <screen role="nodump"><userinput>sed -i 's@DICTPATH.*@DICTPATH\t/lib/cracklib/pw_dict@' etc/login.defs</userinput></screen>
|
|---|
| 112 | </note>
|
|---|
| 113 |
|
|---|
| 114 | <para>Compile the package:</para>
|
|---|
| 115 |
|
|---|
| 116 | <screen><userinput>make</userinput></screen>
|
|---|
| 117 |
|
|---|
| 118 | <para>This package does not come with a test suite.</para>
|
|---|
| 119 |
|
|---|
| 120 | <para>Install the package:</para>
|
|---|
| 121 |
|
|---|
| 122 | <screen><userinput>make install</userinput></screen>
|
|---|
| 123 |
|
|---|
| 124 | <para>Move a misplaced program to its proper location:</para>
|
|---|
| 125 |
|
|---|
| 126 | <screen><userinput>mv -v /usr/bin/passwd /bin</userinput></screen>
|
|---|
| 127 |
|
|---|
| 128 | <para>Move Shadow's libraries to more appropriate locations:</para>
|
|---|
| 129 |
|
|---|
| 130 | <screen><userinput>mv -v /lib/libshadow.*a /usr/lib
|
|---|
| 131 | rm -v /lib/libshadow.so
|
|---|
| 132 | ln -sfv ../../lib/libshadow.so.0 /usr/lib/libshadow.so</userinput></screen>
|
|---|
| 133 |
|
|---|
| 134 | </sect2>
|
|---|
| 135 |
|
|---|
| 136 | <sect2 id="conf-shadow" role="configuration">
|
|---|
| 137 | <title>Configuring Shadow</title>
|
|---|
| 138 |
|
|---|
| 139 | <indexterm zone="conf-shadow">
|
|---|
| 140 | <primary sortas="a-Shadow">Shadow</primary>
|
|---|
| 141 | <secondary>configuring</secondary>
|
|---|
| 142 | </indexterm>
|
|---|
| 143 |
|
|---|
| 144 | <para>This package contains utilities to add, modify, and delete users and
|
|---|
| 145 | groups; set and change their passwords; and perform other administrative
|
|---|
| 146 | tasks. For a full explanation of what <emphasis>password shadowing</emphasis>
|
|---|
| 147 | means, see the <filename>doc/HOWTO</filename> file within the unpacked
|
|---|
| 148 | source tree. If using Shadow support, keep in mind that programs which need
|
|---|
| 149 | to verify passwords (display managers, FTP programs, pop3 daemons, etc.)
|
|---|
| 150 | must be Shadow-compliant. That is, they need to be able to work with
|
|---|
| 151 | shadowed passwords.</para>
|
|---|
| 152 |
|
|---|
| 153 | <para>To enable shadowed passwords, run the following command:</para>
|
|---|
| 154 |
|
|---|
| 155 | <screen><userinput>pwconv</userinput></screen>
|
|---|
| 156 |
|
|---|
| 157 | <para>To enable shadowed group passwords, run:</para>
|
|---|
| 158 |
|
|---|
| 159 | <screen><userinput>grpconv</userinput></screen>
|
|---|
| 160 |
|
|---|
| 161 | <para>Shadow's stock configuration for the <command>useradd</command>
|
|---|
| 162 | utility is not suitable for LFS systems. Use the following commands to
|
|---|
| 163 | change the default home directory for new users and prevent the creation of
|
|---|
| 164 | mail spool files:</para>
|
|---|
| 165 |
|
|---|
| 166 | <screen><userinput>useradd -D -b /home
|
|---|
| 167 | sed -i 's/yes/no/' /etc/default/useradd</userinput></screen>
|
|---|
| 168 |
|
|---|
| 169 | </sect2>
|
|---|
| 170 |
|
|---|
| 171 | <sect2 role="configuration">
|
|---|
| 172 | <title>Setting the root password</title>
|
|---|
| 173 |
|
|---|
| 174 | <para>Choose a password for user <emphasis>root</emphasis> and set it
|
|---|
| 175 | by running:</para>
|
|---|
| 176 |
|
|---|
| 177 | <screen role="nodump"><userinput>passwd root</userinput></screen>
|
|---|
| 178 |
|
|---|
| 179 | </sect2>
|
|---|
| 180 |
|
|---|
| 181 | <sect2 id="contents-shadow" role="content">
|
|---|
| 182 | <title>Contents of Shadow</title>
|
|---|
| 183 |
|
|---|
| 184 | <segmentedlist>
|
|---|
| 185 | <segtitle>Installed programs</segtitle>
|
|---|
| 186 | <segtitle>Installed libraries</segtitle>
|
|---|
| 187 |
|
|---|
| 188 | <seglistitem>
|
|---|
| 189 | <seg>chage, chfn, chgpasswd, chpasswd, chsh, expiry, faillog, gpasswd,
|
|---|
| 190 | groupadd, groupdel, groupmod, grpck, grpconv, grpunconv, lastlog, login,
|
|---|
| 191 | logoutd, newgrp, newusers, nologin, passwd, pwck, pwconv, pwunconv, sg (link to
|
|---|
| 192 | newgrp), su, useradd, userdel, usermod, vigr (link to vipw), and
|
|---|
| 193 | vipw</seg>
|
|---|
| 194 | <seg>libshadow.{a,so}</seg>
|
|---|
| 195 | </seglistitem>
|
|---|
| 196 | </segmentedlist>
|
|---|
| 197 |
|
|---|
| 198 | <variablelist>
|
|---|
| 199 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
|---|
| 200 | <?dbfo list-presentation="list"?>
|
|---|
| 201 | <?dbhtml list-presentation="table"?>
|
|---|
| 202 |
|
|---|
| 203 | <varlistentry id="chage">
|
|---|
| 204 | <term><command>chage</command></term>
|
|---|
| 205 | <listitem>
|
|---|
| 206 | <para>Used to change the maximum number of days between obligatory
|
|---|
| 207 | password changes</para>
|
|---|
| 208 | <indexterm zone="ch-system-shadow chage">
|
|---|
| 209 | <primary sortas="b-chage">chage</primary>
|
|---|
| 210 | </indexterm>
|
|---|
| 211 | </listitem>
|
|---|
| 212 | </varlistentry>
|
|---|
| 213 |
|
|---|
| 214 | <varlistentry id="chfn">
|
|---|
| 215 | <term><command>chfn</command></term>
|
|---|
| 216 | <listitem>
|
|---|
| 217 | <para>Used to change a user's full name and other information</para>
|
|---|
| 218 | <indexterm zone="ch-system-shadow chfn">
|
|---|
| 219 | <primary sortas="b-chfn">chfn</primary>
|
|---|
| 220 | </indexterm>
|
|---|
| 221 | </listitem>
|
|---|
| 222 | </varlistentry>
|
|---|
| 223 |
|
|---|
| 224 | <varlistentry id="chgpasswd">
|
|---|
| 225 | <term><command>chgpasswd</command></term>
|
|---|
| 226 | <listitem>
|
|---|
| 227 | <para>Used to update group passwords in batch mode</para>
|
|---|
| 228 | <indexterm zone="ch-system-shadow chgpasswd">
|
|---|
| 229 | <primary sortas="b-chgpasswd">chgpasswd</primary>
|
|---|
| 230 | </indexterm>
|
|---|
| 231 | </listitem>
|
|---|
| 232 | </varlistentry>
|
|---|
| 233 |
|
|---|
| 234 | <varlistentry id="chpasswd">
|
|---|
| 235 | <term><command>chpasswd</command></term>
|
|---|
| 236 | <listitem>
|
|---|
| 237 | <para>Used to update user passwords in batch mode</para>
|
|---|
| 238 | <indexterm zone="ch-system-shadow chpasswd">
|
|---|
| 239 | <primary sortas="b-chpasswd">chpasswd</primary>
|
|---|
| 240 | </indexterm>
|
|---|
| 241 | </listitem>
|
|---|
| 242 | </varlistentry>
|
|---|
| 243 |
|
|---|
| 244 | <varlistentry id="chsh">
|
|---|
| 245 | <term><command>chsh</command></term>
|
|---|
| 246 | <listitem>
|
|---|
| 247 | <para>Used to change a user's default login shell</para>
|
|---|
| 248 | <indexterm zone="ch-system-shadow chsh">
|
|---|
| 249 | <primary sortas="b-chsh">chsh</primary>
|
|---|
| 250 | </indexterm>
|
|---|
| 251 | </listitem>
|
|---|
| 252 | </varlistentry>
|
|---|
| 253 |
|
|---|
| 254 | <varlistentry id="expiry">
|
|---|
| 255 | <term><command>expiry</command></term>
|
|---|
| 256 | <listitem>
|
|---|
| 257 | <para>Checks and enforces the current password expiration policy</para>
|
|---|
| 258 | <indexterm zone="ch-system-shadow expiry">
|
|---|
| 259 | <primary sortas="b-expiry">expiry</primary>
|
|---|
| 260 | </indexterm>
|
|---|
| 261 | </listitem>
|
|---|
| 262 | </varlistentry>
|
|---|
| 263 |
|
|---|
| 264 | <varlistentry id="faillog">
|
|---|
| 265 | <term><command>faillog</command></term>
|
|---|
| 266 | <listitem>
|
|---|
| 267 | <para>Is used to examine the log of login failures, to set a maximum
|
|---|
| 268 | number of failures before an account is blocked, or to reset the
|
|---|
| 269 | failure count</para>
|
|---|
| 270 | <indexterm zone="ch-system-shadow faillog">
|
|---|
| 271 | <primary sortas="b-faillog">faillog</primary>
|
|---|
| 272 | </indexterm>
|
|---|
| 273 | </listitem>
|
|---|
| 274 | </varlistentry>
|
|---|
| 275 |
|
|---|
| 276 | <varlistentry id="gpasswd">
|
|---|
| 277 | <term><command>gpasswd</command></term>
|
|---|
| 278 | <listitem>
|
|---|
| 279 | <para>Is used to add and delete members and administrators to
|
|---|
| 280 | groups</para>
|
|---|
| 281 | <indexterm zone="ch-system-shadow gpasswd">
|
|---|
| 282 | <primary sortas="b-gpasswd">gpasswd</primary>
|
|---|
| 283 | </indexterm>
|
|---|
| 284 | </listitem>
|
|---|
| 285 | </varlistentry>
|
|---|
| 286 |
|
|---|
| 287 | <varlistentry id="groupadd">
|
|---|
| 288 | <term><command>groupadd</command></term>
|
|---|
| 289 | <listitem>
|
|---|
| 290 | <para>Creates a group with the given name</para>
|
|---|
| 291 | <indexterm zone="ch-system-shadow groupadd">
|
|---|
| 292 | <primary sortas="b-groupadd">groupadd</primary>
|
|---|
| 293 | </indexterm>
|
|---|
| 294 | </listitem>
|
|---|
| 295 | </varlistentry>
|
|---|
| 296 |
|
|---|
| 297 | <varlistentry id="groupdel">
|
|---|
| 298 | <term><command>groupdel</command></term>
|
|---|
| 299 | <listitem>
|
|---|
| 300 | <para>Deletes the group with the given name</para>
|
|---|
| 301 | <indexterm zone="ch-system-shadow groupdel">
|
|---|
| 302 | <primary sortas="b-groupdel">groupdel</primary>
|
|---|
| 303 | </indexterm>
|
|---|
| 304 | </listitem>
|
|---|
| 305 | </varlistentry>
|
|---|
| 306 |
|
|---|
| 307 | <varlistentry id="groupmod">
|
|---|
| 308 | <term><command>groupmod</command></term>
|
|---|
| 309 | <listitem>
|
|---|
| 310 | <para>Is used to modify the given group's name or GID</para>
|
|---|
| 311 | <indexterm zone="ch-system-shadow groupmod">
|
|---|
| 312 | <primary sortas="b-groupmod">groupmod</primary>
|
|---|
| 313 | </indexterm>
|
|---|
| 314 | </listitem>
|
|---|
| 315 | </varlistentry>
|
|---|
| 316 |
|
|---|
| 317 | <varlistentry id="grpck">
|
|---|
| 318 | <term><command>grpck</command></term>
|
|---|
| 319 | <listitem>
|
|---|
| 320 | <para>Verifies the integrity of the group files
|
|---|
| 321 | <filename>/etc/group</filename> and
|
|---|
| 322 | <filename>/etc/gshadow</filename></para>
|
|---|
| 323 | <indexterm zone="ch-system-shadow grpck">
|
|---|
| 324 | <primary sortas="b-grpck">grpck</primary>
|
|---|
| 325 | </indexterm>
|
|---|
| 326 | </listitem>
|
|---|
| 327 | </varlistentry>
|
|---|
| 328 |
|
|---|
| 329 | <varlistentry id="grpconv">
|
|---|
| 330 | <term><command>grpconv</command></term>
|
|---|
| 331 | <listitem>
|
|---|
| 332 | <para>Creates or updates the shadow group file from the normal
|
|---|
| 333 | group file</para>
|
|---|
| 334 | <indexterm zone="ch-system-shadow grpconv">
|
|---|
| 335 | <primary sortas="b-grpconv">grpconv</primary>
|
|---|
| 336 | </indexterm>
|
|---|
| 337 | </listitem>
|
|---|
| 338 | </varlistentry>
|
|---|
| 339 |
|
|---|
| 340 | <varlistentry id="grpunconv">
|
|---|
| 341 | <term><command>grpunconv</command></term>
|
|---|
| 342 | <listitem>
|
|---|
| 343 | <para>Updates <filename>/etc/group</filename> from
|
|---|
| 344 | <filename>/etc/gshadow</filename> and then deletes the latter</para>
|
|---|
| 345 | <indexterm zone="ch-system-shadow grpunconv">
|
|---|
| 346 | <primary sortas="b-grpunconv">grpunconv</primary>
|
|---|
| 347 | </indexterm>
|
|---|
| 348 | </listitem>
|
|---|
| 349 | </varlistentry>
|
|---|
| 350 |
|
|---|
| 351 | <varlistentry id="lastlog">
|
|---|
| 352 | <term><command>lastlog</command></term>
|
|---|
| 353 | <listitem>
|
|---|
| 354 | <para>Reports the most recent login of all users or of a
|
|---|
| 355 | given user</para>
|
|---|
| 356 | <indexterm zone="ch-system-shadow lastlog">
|
|---|
| 357 | <primary sortas="b-lastlog">lastlog</primary>
|
|---|
| 358 | </indexterm>
|
|---|
| 359 | </listitem>
|
|---|
| 360 | </varlistentry>
|
|---|
| 361 |
|
|---|
| 362 | <varlistentry id="login">
|
|---|
| 363 | <term><command>login</command></term>
|
|---|
| 364 | <listitem>
|
|---|
| 365 | <para>Is used by the system to let users sign on</para>
|
|---|
| 366 | <indexterm zone="ch-system-shadow login">
|
|---|
| 367 | <primary sortas="b-login">login</primary>
|
|---|
| 368 | </indexterm>
|
|---|
| 369 | </listitem>
|
|---|
| 370 | </varlistentry>
|
|---|
| 371 |
|
|---|
| 372 | <varlistentry id="logoutd">
|
|---|
| 373 | <term><command>logoutd</command></term>
|
|---|
| 374 | <listitem>
|
|---|
| 375 | <para>Is a daemon used to enforce restrictions on log-on time
|
|---|
| 376 | and ports</para>
|
|---|
| 377 | <indexterm zone="ch-system-shadow logoutd">
|
|---|
| 378 | <primary sortas="b-logoutd">logoutd</primary>
|
|---|
| 379 | </indexterm>
|
|---|
| 380 | </listitem>
|
|---|
| 381 | </varlistentry>
|
|---|
| 382 |
|
|---|
| 383 | <varlistentry id="newgrp">
|
|---|
| 384 | <term><command>newgrp</command></term>
|
|---|
| 385 | <listitem>
|
|---|
| 386 | <para>Is used to change the current GID during a login session</para>
|
|---|
| 387 | <indexterm zone="ch-system-shadow newgrp">
|
|---|
| 388 | <primary sortas="b-newgrp">newgrp</primary>
|
|---|
| 389 | </indexterm>
|
|---|
| 390 | </listitem>
|
|---|
| 391 | </varlistentry>
|
|---|
| 392 |
|
|---|
| 393 | <varlistentry id="newusers">
|
|---|
| 394 | <term><command>newusers</command></term>
|
|---|
| 395 | <listitem>
|
|---|
| 396 | <para>Is used to create or update an entire series of user
|
|---|
| 397 | accounts</para>
|
|---|
| 398 | <indexterm zone="ch-system-shadow newusers">
|
|---|
| 399 | <primary sortas="b-newusers">newusers</primary>
|
|---|
| 400 | </indexterm>
|
|---|
| 401 | </listitem>
|
|---|
| 402 | </varlistentry>
|
|---|
| 403 |
|
|---|
| 404 | <varlistentry id="nologin">
|
|---|
| 405 | <term><command>nologin</command></term>
|
|---|
| 406 | <listitem>
|
|---|
| 407 | <para>Displays a message that an account is not available. Designed
|
|---|
| 408 | to be used as the default shell for accounts that have been
|
|---|
| 409 | disabled</para>
|
|---|
| 410 | <indexterm zone="ch-system-shadow nologin">
|
|---|
| 411 | <primary sortas="b-nologin">nologin</primary>
|
|---|
| 412 | </indexterm>
|
|---|
| 413 | </listitem>
|
|---|
| 414 | </varlistentry>
|
|---|
| 415 |
|
|---|
| 416 | <varlistentry id="passwd">
|
|---|
| 417 | <term><command>passwd</command></term>
|
|---|
| 418 | <listitem>
|
|---|
| 419 | <para>Is used to change the password for a user or group account</para>
|
|---|
| 420 | <indexterm zone="ch-system-shadow passwd">
|
|---|
| 421 | <primary sortas="b-passwd">passwd</primary>
|
|---|
| 422 | </indexterm>
|
|---|
| 423 | </listitem>
|
|---|
| 424 | </varlistentry>
|
|---|
| 425 |
|
|---|
| 426 | <varlistentry id="pwck">
|
|---|
| 427 | <term><command>pwck</command></term>
|
|---|
| 428 | <listitem>
|
|---|
| 429 | <para>Verifies the integrity of the password files
|
|---|
| 430 | <filename>/etc/passwd</filename> and
|
|---|
| 431 | <filename>/etc/shadow</filename></para>
|
|---|
| 432 | <indexterm zone="ch-system-shadow pwck">
|
|---|
| 433 | <primary sortas="b-pwck">pwck</primary>
|
|---|
| 434 | </indexterm>
|
|---|
| 435 | </listitem>
|
|---|
| 436 | </varlistentry>
|
|---|
| 437 |
|
|---|
| 438 | <varlistentry id="pwconv">
|
|---|
| 439 | <term><command>pwconv</command></term>
|
|---|
| 440 | <listitem>
|
|---|
| 441 | <para>Creates or updates the shadow password file from the normal
|
|---|
| 442 | password file</para>
|
|---|
| 443 | <indexterm zone="ch-system-shadow pwconv">
|
|---|
| 444 | <primary sortas="b-pwconv">pwconv</primary>
|
|---|
| 445 | </indexterm>
|
|---|
| 446 | </listitem>
|
|---|
| 447 | </varlistentry>
|
|---|
| 448 |
|
|---|
| 449 | <varlistentry id="pwunconv">
|
|---|
| 450 | <term><command>pwunconv</command></term>
|
|---|
| 451 | <listitem>
|
|---|
| 452 | <para>Updates <filename>/etc/passwd</filename> from
|
|---|
| 453 | <filename>/etc/shadow</filename> and then deletes the latter</para>
|
|---|
| 454 | <indexterm zone="ch-system-shadow pwunconv">
|
|---|
| 455 | <primary sortas="b-pwunconv">pwunconv</primary>
|
|---|
| 456 | </indexterm>
|
|---|
| 457 | </listitem>
|
|---|
| 458 | </varlistentry>
|
|---|
| 459 |
|
|---|
| 460 | <varlistentry id="sg">
|
|---|
| 461 | <term><command>sg</command></term>
|
|---|
| 462 | <listitem>
|
|---|
| 463 | <para>Executes a given command while the user's GID
|
|---|
| 464 | is set to that of the given group</para>
|
|---|
| 465 | <indexterm zone="ch-system-shadow sg">
|
|---|
| 466 | <primary sortas="b-sg">sg</primary>
|
|---|
| 467 | </indexterm>
|
|---|
| 468 | </listitem>
|
|---|
| 469 | </varlistentry>
|
|---|
| 470 |
|
|---|
| 471 | <varlistentry id="su">
|
|---|
| 472 | <term><command>su</command></term>
|
|---|
| 473 | <listitem>
|
|---|
| 474 | <para>Runs a shell with substitute user and group IDs</para>
|
|---|
| 475 | <indexterm zone="ch-system-shadow su">
|
|---|
| 476 | <primary sortas="b-su">su</primary>
|
|---|
| 477 | </indexterm>
|
|---|
| 478 | </listitem>
|
|---|
| 479 | </varlistentry>
|
|---|
| 480 |
|
|---|
| 481 | <varlistentry id="useradd">
|
|---|
| 482 | <term><command>useradd</command></term>
|
|---|
| 483 | <listitem>
|
|---|
| 484 | <para>Creates a new user with the given name, or updates the default
|
|---|
| 485 | new-user information</para>
|
|---|
| 486 | <indexterm zone="ch-system-shadow useradd">
|
|---|
| 487 | <primary sortas="b-useradd">useradd</primary>
|
|---|
| 488 | </indexterm>
|
|---|
| 489 | </listitem>
|
|---|
| 490 | </varlistentry>
|
|---|
| 491 |
|
|---|
| 492 | <varlistentry id="userdel">
|
|---|
| 493 | <term><command>userdel</command></term>
|
|---|
| 494 | <listitem>
|
|---|
| 495 | <para>Deletes the given user account</para>
|
|---|
| 496 | <indexterm zone="ch-system-shadow userdel">
|
|---|
| 497 | <primary sortas="b-userdel">userdel</primary>
|
|---|
| 498 | </indexterm>
|
|---|
| 499 | </listitem>
|
|---|
| 500 | </varlistentry>
|
|---|
| 501 |
|
|---|
| 502 | <varlistentry id="usermod">
|
|---|
| 503 | <term><command>usermod</command></term>
|
|---|
| 504 | <listitem>
|
|---|
| 505 | <para>Is used to modify the given user's login name, User
|
|---|
| 506 | Identification (UID), shell, initial group, home directory, etc.</para>
|
|---|
| 507 | <indexterm zone="ch-system-shadow usermod">
|
|---|
| 508 | <primary sortas="b-usermod">usermod</primary>
|
|---|
| 509 | </indexterm>
|
|---|
| 510 | </listitem>
|
|---|
| 511 | </varlistentry>
|
|---|
| 512 |
|
|---|
| 513 | <varlistentry id="vigr">
|
|---|
| 514 | <term><command>vigr</command></term>
|
|---|
| 515 | <listitem>
|
|---|
| 516 | <para>Edits the <filename>/etc/group</filename> or
|
|---|
| 517 | <filename>/etc/gshadow</filename> files</para>
|
|---|
| 518 | <indexterm zone="ch-system-shadow vigr">
|
|---|
| 519 | <primary sortas="b-vigr">vigr</primary>
|
|---|
| 520 | </indexterm>
|
|---|
| 521 | </listitem>
|
|---|
| 522 | </varlistentry>
|
|---|
| 523 |
|
|---|
| 524 | <varlistentry id="vipw">
|
|---|
| 525 | <term><command>vipw</command></term>
|
|---|
| 526 | <listitem>
|
|---|
| 527 | <para>Edits the <filename>/etc/passwd</filename> or
|
|---|
| 528 | <filename>/etc/shadow</filename> files</para>
|
|---|
| 529 | <indexterm zone="ch-system-shadow vipw">
|
|---|
| 530 | <primary sortas="b-vipw">vipw</primary>
|
|---|
| 531 | </indexterm>
|
|---|
| 532 | </listitem>
|
|---|
| 533 | </varlistentry>
|
|---|
| 534 |
|
|---|
| 535 | <varlistentry id="libshadow">
|
|---|
| 536 | <term><filename class="libraryfile">libshadow</filename></term>
|
|---|
| 537 | <listitem>
|
|---|
| 538 | <para>Contains functions used by most programs in this package</para>
|
|---|
| 539 | <indexterm zone="ch-system-shadow libshadow">
|
|---|
| 540 | <primary sortas="c-libshadow">libshadow</primary>
|
|---|
| 541 | </indexterm>
|
|---|
| 542 | </listitem>
|
|---|
| 543 | </varlistentry>
|
|---|
| 544 |
|
|---|
| 545 | </variablelist>
|
|---|
| 546 |
|
|---|
| 547 | </sect2>
|
|---|
| 548 |
|
|---|
| 549 | </sect1>
|
|---|
