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skill: new usage function

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Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2011-10-02 00:24:52 +02:00
parent 5e0306f042
commit b6578cb372
1 changed files with 59 additions and 50 deletions
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81
skill.c
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@ -229,17 +229,19 @@ static void iterate(void){
} }
/***** kill help */ /***** kill help */
static void kill_usage(void) NORETURN; static void __attribute__ ((__noreturn__)) kill_usage(void)
static void kill_usage(void){ {
fprintf(stderr, fprintf(stderr,
"Usage:\n" "\nUsage: %s [options] <pid> [...]\n"
" kill pid ... Send SIGTERM to every process listed.\n" "\nOptions:\n"
" kill signal pid ... Send a signal to every process listed.\n" " <pid> [...] send SIGTERM to every <pid> listed\n"
" kill -s signal pid ... Send a signal to every process listed.\n" " -<signal> specify the <signal> to be sent\n"
" kill -l List all signal names.\n" " -s <signal> specify the <signal> to be sent\n"
" kill -L List all signal names in a nice table.\n" " -l list all signal names\n"
" kill -l signal Convert between signal numbers and names.\n" " -L list all signal names in a nice table\n"
); " -l <signal> convert between signal numbers and names\n"
"\nFor more information see kill(1).\n",
program_invocation_short_name);
exit(1); exit(1);
} }
@ -327,43 +329,50 @@ no_more_args:
} }
/***** skill/snice help */ /***** skill/snice help */
static void skillsnice_usage(void) NORETURN; static void __attribute__ ((__noreturn__)) skillsnice_usage(void)
static void skillsnice_usage(void){ {
if(program==PROG_SKILL){ if (program == PROG_SKILL) {
fprintf(stderr,
"\nUsage: %s [signal] [options] <expression>\n",
program_invocation_short_name);
} else {
fprintf(stderr,
"\nUsage: %s [new priority] [options] <expression>\n",
program_invocation_short_name);
}
fprintf(stderr,
"\n"
"Options:\n"
" -f fast mode (not implemented)\n"
" -i interactive\n"
" -l list all signal names\n"
" -L list all signal names in a nice table\n"
" -n no action\n"
" -v explain what is being done\n"
" -w enable warnings (not implemented)\n"
" -V, --version display version information and exit\n"
"\n"
"Expression can be: terminal, user, pid, command.\n"
"The options below may be used to ensure correct interpretation.\n"
" -c <command> expression is a command name\n"
" -p <pid> expression is a process id number\n"
" -t <tty> expression is a terminal\n"
" -u <username> expression is a username\n");
if (program == PROG_SKILL) {
fprintf(stderr, fprintf(stderr,
"Usage: skill [signal to send] [options] process selection criteria\n"
"Example: skill -KILL -v pts/*\n"
"\n" "\n"
"The default signal is TERM. Use -l or -L to list available signals.\n" "The default signal is TERM. Use -l or -L to list available signals.\n"
"Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.\n" "Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.\n"
"Alternate signals may be specified in three ways: -SIGKILL -KILL -9\n" "Alternate signals may be specified in three ways: -SIGKILL -KILL -9\n"
); "\nFor more information see skill(1).\n");
}else{ } else {
fprintf(stderr, fprintf(stderr,
"Usage: snice [new priority] [options] process selection criteria\n"
"Example: snice +7 netscape crack\n"
"\n" "\n"
"The default priority is +4. (snice +4 ...)\n" "The default priority is +4. (snice +4 ...)\n"
"Priority numbers range from +20 (slowest) to -20 (fastest).\n" "Priority numbers range from +20 (slowest) to -20 (fastest).\n"
"Negative priority numbers are restricted to administrative users.\n" "Negative priority numbers are restricted to administrative users.\n"
); "\nFor more information see snice(1).\n");
} }
fprintf(stderr,
"\n"
"General options:\n"
"-f fast mode This is not currently useful.\n"
"-i interactive use You will be asked to approve each action.\n"
"-v verbose output Display information about selected processes.\n"
"-w warnings enabled This is not currently useful.\n"
"-n no action This only displays the process ID.\n"
"\n"
"Selection criteria can be: terminal, user, pid, command.\n"
"The options below may be used to ensure correct interpretation.\n"
"-t The next argument is a terminal (tty or pty).\n"
"-u The next argument is a username.\n"
"-p The next argument is a process ID number.\n"
"-c The next argument is a command name.\n"
);
exit(1); exit(1);
} }