Sami Kerola
123
ps/help.c
123
ps/help.c
@@ -9,37 +9,102 @@
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* GNU Library General Public License for more details.
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*/
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/*
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* The help message must not become longer, because it must fit
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* on an 80x24 screen _with_ the error message and command prompt.
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*/
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const char *help_message =
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"********* simple selection ********* ********* selection by list *********\n"
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"-A all processes -C by command name\n"
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"-N negate selection -G by real group ID (supports names)\n"
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"-a all w/ tty except session leaders -U by real user ID (supports names)\n"
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"-d all except session leaders -g by session OR by effective group name\n"
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"-e all processes -p by process ID\n"
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"T all processes on this terminal -s processes in the sessions given\n"
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"a all w/ tty, including other users -t by tty\n"
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"g OBSOLETE -- DO NOT USE -u by effective user ID (supports names)\n"
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"r only running processes U processes for specified users\n"
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"x processes w/o controlling ttys t by tty\n"
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"*********** output format ********** *********** long options ***********\n"
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"-o,o user-defined -f full --Group --User --pid --cols --ppid\n"
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"-j,j job control s signal --group --user --sid --rows --info\n"
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"-O,O preloaded -o v virtual memory --cumulative --format --deselect\n"
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"-l,l long u user-oriented --sort --tty --forest --version\n"
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"-F extra full X registers --heading --no-heading --context\n"
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" ********* misc options *********\n"
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"-V,V show version L list format codes f ASCII art forest\n"
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"-m,m,-L,-T,H threads S children in sum -y change -l format\n"
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"-M,Z security data c true command name -c scheduling class\n"
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"-w,w wide output n numeric WCHAN,UID -H process hierarchy\n"
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;
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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void __attribute__ ((__noreturn__)) usage(FILE * out, int section)
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{
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fprintf(out,
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"\nUsage: %s [options]\n", program_invocation_short_name);
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if (section == USAGE_SELECTION || section == USAGE_ALL) {
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fprintf(out,
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"\nSimple options:\n"
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" -A all processes\n"
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" -N, --deselect negate selection\n"
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" -a all without tty and session leader\n"
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" -d all except session leader\n"
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" -e all processes\n"
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" T all processes on this terminal\n"
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" a all without tty, including other users\n"
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" g obsolete, do not use\n"
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" r only running processes\n"
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" x processes without controlling ttys\n");
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}
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if (section == USAGE_LIST || section == USAGE_ALL) {
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fprintf(out,
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"\nSelection by list:\n"
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" -C <command> command name\n"
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" U, -u, --user <uid> effective user id or name\n"
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" -U, --User <uid> real user id or name\n"
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" -G, --Group <gid> real group id or name\n"
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" -g, --group <group> session or effective group name\n"
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" -p, --pid <pid> process id\n"
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" --ppid <pid> select by parent process id\n"
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" -s, --sid <session> session id\n"
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" t, -t, --tty <tty> terminal\n"
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"\n selection <arguments> take csv list e.g. `-u root,nobody'\n");
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}
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if (section == USAGE_OUTPUT || section == USAGE_ALL) {
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fprintf(out,
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"\nOutput formats:\n"
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" o, -o, --format <format>"
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" user defined format\n"
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" O <format> preloaded -o allowing sorting\n"
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" -O <format> preloaded, with default columns, allowing sorting\n"
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" -j jobs format\n"
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" j BSD job control format\n"
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" -l long format\n"
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" l BSD long format\n"
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" y do not show flags, show rrs in place addr (used with -l)\n"
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" -f full-format\n"
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" -F extra full\n"
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" s signal format\n"
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" v virtual memory\n"
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" u user-oriented format\n"
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" X register format\n"
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" Z, -M security data (for SE Linux)\n"
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" f, --forest ascii art process tree\n"
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" -H show process hierarchy\n"
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" --context display security context (for SE Linux)\n"
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" --heading repeat header lines\n"
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" --no-headers do not print header at all\n"
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" --cols <num> set screen width\n"
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" --rows <num> set screen height\n");
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}
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if (section == USAGE_THREADS || section == USAGE_ALL) {
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fprintf(out,
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"\nShow threads:\n"
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" H as if they where processes\n"
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" -L possibly with LWP and NLWP columns\n"
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" -T possibly with SPID column\n"
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" m, -m after processes\n");
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}
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if (section == USAGE_MISC || section == USAGE_ALL) {
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fprintf(out,
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"\nMisc options:\n"
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" w, -w unlimited output width\n"
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" L list format codes\n"
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" c true command name\n"
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" n display numeric uid and wchan\n"
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" -y do not show flags, show rss (only with -l)\n"
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" -c show scheduling class\n"
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" --sort <spec> specify sort order, can be a csv list\n"
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" S, --cumulative include some dead child process data\n"
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" --info print debuggin information\n"
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" V,-V, --version display version information and exit\n"
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" --help <selection|list|output|threads|misc|all>\n"
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" display help\n");
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}
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if (section == USAGE_DEFAULT)
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fprintf(out,
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"\n Try `%s --help <selection|list|output|threads|misc|all>'\n"
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" for more information.\n", program_invocation_short_name);
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fprintf(out, "\nFor more information see ps(1).\n");
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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/* Missing:
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*
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