Attached is a patch to add a -p option to the ps command to show information for only a single PID: ps -p PID This option is available on other implementations of ps (e.g., Solaris).
Index: winsup/utils/ps.cc =================================================================== --- ps.cc.orig 2006-02-13 17:19:24.000000000 -0500 +++ ps.cc 2006-02-13 17:53:20.000000000 -0500 @@ -29,6 +29,7 @@ {"full", no_argument, NULL, 'f' }, {"help", no_argument, NULL, 'h' }, {"long", no_argument, NULL, 'l' }, + {"process", required_argument, NULL, 'p'}, {"summary", no_argument, NULL, 's' }, {"user", required_argument, NULL, 'u'}, {"version", no_argument, NULL, 'v'}, @@ -36,7 +37,7 @@ {NULL, 0, NULL, 0} }; -static char opts[] = "aefhlsu:vW"; +static char opts[] = "aefhlp:su:vW"; typedef BOOL (WINAPI *ENUMPROCESSMODULES)( HANDLE hProcess, // handle to the process @@ -200,7 +201,7 @@ usage (FILE * stream, int status) { fprintf (stream, "\ -Usage: %s [-aefls] [-u UID]\n\ +Usage: %s [-aefls] [-u UID] [-p PID]\n\ Report process status\n\ \n\ -a, --all show processes of all users\n\ @@ -208,6 +209,7 @@ -f, --full show process uids, ppids\n\ -h, --help output usage information and exit\n\ -l, --long show process uids, ppids, pgids, winpids\n\ + -p, --process show information for specified PID\n\ -s, --summary show process summary\n\ -u, --user list processes owned by UID\n\ -v, --version output version information and exit\n\ @@ -244,7 +246,7 @@ main (int argc, char *argv[]) { external_pinfo *p; - int aflag, lflag, fflag, sflag, uid; + int aflag, lflag, fflag, sflag, uid, proc_id; cygwin_getinfo_types query = CW_GETPINFO; const char *dtitle = " PID TTY STIME COMMAND\n"; const char *dfmt = "%7d%4s%10s %s\n"; @@ -256,6 +258,7 @@ aflag = lflag = fflag = sflag = 0; uid = getuid (); + proc_id = -1; lflag = 1; prog_name = strrchr (argv[0], '/'); @@ -281,6 +284,9 @@ case 'l': lflag = 1; break; + case 'p': + proc_id = atoi (optarg); + break; case 's': sflag = 1; break; @@ -328,6 +334,9 @@ (p = (external_pinfo *) cygwin_internal (query, pid | CW_NEXTPID)); pid = p->pid) { + if ((proc_id > 0) && (p->pid != proc_id)) { + continue; + } if (!aflag) if (p->version >= EXTERNAL_PINFO_VERSION_32_BIT) {
--- cygwin-ug-net.sgml.orig 2006-02-14 08:59:42.000000000 -0500 +++ cygwin-ug-net.sgml 2006-02-14 09:01:38.000000000 -0500 @@ -3834,7 +3834,7 @@ <sect2 id="ps"><title>ps</title> <screen> -Usage: ps [-aefls] [-u UID] +Usage: ps [-aefls] [-u UID] [-p PID] Report process status -a, --all show processes of all users @@ -3842,6 +3842,7 @@ -f, --full show process uids, ppids -h, --help output usage information and exit -l, --long show process uids, ppids, pgids, winpids + -p, --process show information for specified PID -s, --summary show process summary -u, --user list processes owned by UID -v, --version output version information and exit @@ -3880,7 +3881,9 @@ mode, showing a "long" listing with all the above columns. The other display option is <literal>-s</literal>, which outputs a shorter listing of just PID, TTY, STIME, and COMMAND. The <literal>-u</literal> option allows you -to show only processes owned by a specific user. The <literal>-W</literal> +to show only processes owned by a specific user. The <literal>-p</literal> +option allows you to show information for only the process with the +specified PID. The <literal>-W</literal> option causes <command>ps</command> show non-Cygwin Windows processes as well as Cygwin processes. The WINPID is also the PID, and they can be killed with the Cygwin <command>kill</command> command's <literal>-f</literal>
--- cygwin-ug-net.texi.orig 2006-02-14 09:03:06.000000000 -0500 +++ cygwin-ug-net.texi 2006-02-14 09:02:10.000000000 -0500 @@ -3873,7 +3873,7 @@ @example -Usage: ps [-aefls] [-u UID] +Usage: ps [-aefls] [-u UID] [-p PID] Report process status -a, --all show processes of all users @@ -3881,6 +3881,7 @@ -f, --full show process uids, ppids -h, --help output usage information and exit -l, --long show process uids, ppids, pgids, winpids + -p, --process show information for specified PID -s, --summary show process summary -u, --user list processes owned by UID -v, --version output version information and exit @@ -3915,7 +3916,9 @@ mode, showing a "long" listing with all the above columns. The other display option is @samp{-s}, which outputs a shorter listing of just PID, TTY, STIME, and COMMAND. The @samp{-u} option allows you -to show only processes owned by a specific user. The @samp{-W} +to show only processes owned by a specific user. The @samp{-p} +option allows you to show information for only the process with the +specified PID. The @samp{-W} option causes @code{ps} show non-Cygwin Windows processes as well as Cygwin processes. The WINPID is also the PID, and they can be killed with the Cygwin @code{kill} command's @samp{-f}