procps/ps/help.c

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/*
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* Copyright 1998-2004 by Albert Cahalan; all rights reserved.
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* This file may be used subject to the terms and conditions of the
* GNU Library General Public License Version 2, or any later version
* at your option, as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
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#include "common.h"
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void __attribute__ ((__noreturn__)) usage(FILE * out, int section)
{
fprintf(out,
"\nUsage: %s [options]\n", program_invocation_short_name);
if (section == USAGE_SELECTION || section == USAGE_ALL) {
fprintf(out,
"\nSimple options:\n"
" -A all processes\n"
" -N, --deselect negate selection\n"
" -a all without tty and session leader\n"
" -d all except session leader\n"
" -e all processes\n"
" T all processes on this terminal\n"
" a all without tty, including other users\n"
" g obsolete, do not use\n"
" r only running processes\n"
" x processes without controlling ttys\n");
}
if (section == USAGE_LIST || section == USAGE_ALL) {
fprintf(out,
"\nSelection by list:\n"
" -C <command> command name\n"
" U, -u, --user <uid> effective user id or name\n"
" -U, --User <uid> real user id or name\n"
" -G, --Group <gid> real group id or name\n"
" -g, --group <group> session or effective group name\n"
" -p, --pid <pid> process id\n"
" --ppid <pid> select by parent process id\n"
" -s, --sid <session> session id\n"
" t, -t, --tty <tty> terminal\n"
"\n selection <arguments> take csv list e.g. `-u root,nobody'\n");
}
if (section == USAGE_OUTPUT || section == USAGE_ALL) {
fprintf(out,
"\nOutput formats:\n"
" o, -o, --format <format>"
" user defined format\n"
" O <format> preloaded -o allowing sorting\n"
" -O <format> preloaded, with default columns, allowing sorting\n"
" -j jobs format\n"
" j BSD job control format\n"
" -l long format\n"
" l BSD long format\n"
" y do not show flags, show rrs in place addr (used with -l)\n"
" -f full-format\n"
" -F extra full\n"
" s signal format\n"
" v virtual memory\n"
" u user-oriented format\n"
" X register format\n"
" Z, -M security data (for SE Linux)\n"
" f, --forest ascii art process tree\n"
" -H show process hierarchy\n"
" --context display security context (for SE Linux)\n"
" --heading repeat header lines\n"
" --no-headers do not print header at all\n"
" --cols <num> set screen width\n"
" --rows <num> set screen height\n");
}
if (section == USAGE_THREADS || section == USAGE_ALL) {
fprintf(out,
"\nShow threads:\n"
" H as if they where processes\n"
" -L possibly with LWP and NLWP columns\n"
" -T possibly with SPID column\n"
" m, -m after processes\n");
}
if (section == USAGE_MISC || section == USAGE_ALL) {
fprintf(out,
"\nMisc options:\n"
" w, -w unlimited output width\n"
" L list format codes\n"
" c true command name\n"
" n display numeric uid and wchan\n"
" -y do not show flags, show rss (only with -l)\n"
" -c show scheduling class\n"
" --sort <spec> specify sort order, can be a csv list\n"
" S, --cumulative include some dead child process data\n"
" --info print debuggin information\n"
" V,-V, --version display version information and exit\n"
" --help <selection|list|output|threads|misc|all>\n"
" display help\n");
}
if (section == USAGE_DEFAULT)
fprintf(out,
"\n Try `%s --help <selection|list|output|threads|misc|all>'\n"
" for more information.\n", program_invocation_short_name);
fprintf(out, "\nFor more information see ps(1).\n");
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
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/* Missing:
*
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* -P e k
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*
*/