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      1 /* pidof.c - Print the Process IDs of all processes with the given names.
      2  *
      3  * Copyright 2012 Andreas Heck <aheck (at) gmx.de>
      4  * Copyright 2012 Elie De Brauwer <eliedebrauwer (at) gmail.com>
      5  *
      6  * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/pidof.html
      7 
      8 USE_PIDOF(NEWTOY(pidof, "<1so:", TOYFLAG_BIN))
      9 
     10 config PIDOF
     11   bool "pidof"
     12   default y
     13   help
     14     usage: pidof [-s] [-o omitpid[,omitpid...]] [NAME]...
     15 
     16     Print the PIDs of all processes with the given names.
     17 
     18     -s	single shot, only return one pid
     19     -o	omit PID(s)
     20 */
     21 
     22 #define FOR_pidof
     23 #include "toys.h"
     24 
     25 GLOBALS(
     26   char *omit;
     27 )
     28 
     29 static int print_pid(pid_t pid, char *name)
     30 {
     31   sprintf(toybuf, "%d", (int)pid);
     32   if (comma_scan(TT.omit, toybuf, 0)) return 0;
     33   xprintf(" %s"+!!toys.exitval, toybuf);
     34   toys.exitval = 0;
     35 
     36   return toys.optflags & FLAG_s;
     37 }
     38 
     39 void pidof_main(void)
     40 {
     41   toys.exitval = 1;
     42   names_to_pid(toys.optargs, print_pid);
     43   if (!toys.exitval) xputc('\n');
     44 }
     45