new -o option: only the oldest that matches
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albert
parent
7f68f2504c
commit
501e740a31
1
NEWS
1
NEWS
@ -5,6 +5,7 @@ better (?) RPM generation
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XConsole and top.desktop removed
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old build system removed
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code cleanup
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pgrep and pkill get "-o" (oldest matching process)
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procps-3.0.3 --> procps-3.0.4
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1
TODO
1
TODO
@ -1,6 +1,7 @@
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-------------------------- general ------------------------
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Implement /usr/proc/bin tools like Solaris has.
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The prstat command is interesting, like top in batch mode.
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Don't these really belong in the procps package?
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killall pstree fuser lsof who
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12
pgrep.1
12
pgrep.1
@ -7,13 +7,13 @@
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pgrep, pkill \- look up or signal processes based on name and other attributes
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.SH SYNOPSIS
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pgrep [\-flnvx] [\-d \fIdelimiter\fP] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
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pgrep [\-flvx] [\-d \fIdelimiter\fP] [\-n|\-o] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
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.br
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[\-s \fIsid\fP,...] [\-u \fIeuid\fP,...] [\-U \fIuid\fP,...] [\-G \fIgid\fP,...]
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.br
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[\-t \fIterm\fP,...] [\fIpattern\fP]
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pkill [\-\fIsignal\fP] [\-fnvx] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
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pkill [\-\fIsignal\fP] [\-fvx] [\-n|\-o] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
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.br
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[\-s \fIsid\fP,...] [\-u \fIeuid\fP,...] [\-U \fIuid\fP,...] [\-G \fIgid\fP,...]
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.br
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@ -61,6 +61,10 @@ List the process name as well as the process ID. (\fBpgrep\fP only.)
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Select only the newest (most recently started) of the matching
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processes.
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.TP
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\-o
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Select only the oldest (least recently started) of the matching
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processes.
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.TP
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\-P \fIppid\fP,...
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Only match processes whose parent process ID is listed.
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.TP
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@ -137,8 +141,8 @@ The running \fBpgrep\fP or \fBpkill\fP process will never report
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itself as a match.
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.SH BUGS
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The options \-n and \-v can not be combined. Let me know if you need
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to do this.
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The options \-n and \-o and \-v can not be combined. Let me know if
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you need to do this.
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Defunct processes are reported.
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49
pgrep.c
49
pgrep.c
@ -11,6 +11,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <string.h>
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@ -39,6 +40,7 @@ union el {
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static int opt_full = 0;
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static int opt_long = 0;
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static int opt_oldest = 0;
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static int opt_newest = 0;
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static int opt_negate = 0;
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static int opt_exact = 0;
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@ -72,10 +74,10 @@ static int
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usage (int opt)
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{
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if (i_am_pkill)
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fprintf (stderr, "Usage: pkill [-SIGNAL] [-fnvx] ");
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fprintf (stderr, "Usage: pkill [-SIGNAL] [-fvx] ");
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else
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fprintf (stderr, "Usage: pgrep [-flnvx] [-d DELIM] ");
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fprintf (stderr, "[-P PPIDLIST] [-g PGRPLIST] [-s SIDLIST]\n"
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fprintf (stderr, "Usage: pgrep [-flvx] [-d DELIM] ");
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fprintf (stderr, "[-n|-o] [-P PPIDLIST] [-g PGRPLIST] [-s SIDLIST]\n"
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"\t[-u EUIDLIST] [-U UIDLIST] [-G GIDLIST] [-t TERMLIST] "
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"[PATTERN]\n");
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exit (opt == '?' ? 0 : 2);
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@ -111,7 +113,7 @@ parse_opts (int argc, char **argv)
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strcat (opts, "ld:");
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}
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strcat (opts, "fnvxP:g:s:u:U:G:t:?V");
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strcat (opts, "fnovxP:g:s:u:U:G:t:?V");
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while ((opt = getopt (argc, argv, opts)) != -1) {
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switch (opt) {
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@ -122,10 +124,20 @@ parse_opts (int argc, char **argv)
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opt_long = 1;
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break;
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case 'n':
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if (opt_oldest|opt_negate|opt_newest)
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usage (opt);
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opt_newest = 1;
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++criteria_count;
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break;
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case 'o':
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if (opt_oldest|opt_negate|opt_newest)
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usage (opt);
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opt_oldest = 1;
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++criteria_count;
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break;
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case 'v':
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if (opt_oldest|opt_negate|opt_newest)
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usage (opt);
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opt_negate = 1;
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break;
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case 'x':
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@ -478,8 +490,8 @@ select_procs (void)
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{
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PROCTAB *ptp;
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proc_t task;
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unsigned long long newest_start_time = 0;
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pid_t newest_pid = 0;
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unsigned long long saved_start_time; // for new/old support
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pid_t saved_pid = 0; // for new/old support
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int matches = 0;
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int size = 32;
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regex_t *preg;
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@ -493,6 +505,11 @@ select_procs (void)
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ptp = do_openproc ();
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preg = do_regcomp ();
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if (opt_newest) saved_start_time = 0ULL;
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if (opt_oldest) saved_start_time = ~0ULL;
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if (opt_newest) saved_pid = 0;
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if (opt_oldest) saved_pid = INT_MAX;
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memset (&task, 0, sizeof (task));
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while (readproc (ptp, &task)) {
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@ -500,7 +517,9 @@ select_procs (void)
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if (task.pid == myself)
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continue;
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else if (opt_newest && task.start_time < newest_start_time)
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else if (opt_newest && task.start_time < saved_start_time)
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match = 0;
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else if (opt_oldest && task.start_time > saved_start_time)
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match = 0;
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else if (opt_ppid && ! match_numlist (task.ppid, opt_ppid))
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match = 0;
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@ -553,11 +572,19 @@ select_procs (void)
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if (match ^ opt_negate) { /* Exclusive OR is neat */
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if (opt_newest) {
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if (newest_start_time == task.start_time &&
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newest_pid > task.pid)
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if (saved_start_time == task.start_time &&
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saved_pid > task.pid)
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continue;
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newest_start_time = task.start_time;
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newest_pid = task.pid;
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saved_start_time = task.start_time;
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saved_pid = task.pid;
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matches = 0;
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}
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if (opt_oldest) {
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if (saved_start_time == task.start_time &&
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saved_pid < task.pid)
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continue;
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saved_start_time = task.start_time;
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saved_pid = task.pid;
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matches = 0;
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}
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if (opt_long) {
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