perl查找进程PID的例子
主要是利用查找/proc目录下的相关文件进行查找.
#!/usr/bin/perl
usestrict;
usewarnings;
#usage:process_grep.plProcessName
exit(main(@ARGV));
submain{
my$Phash;
my$ProcessName=shift;
my$PROC_DIR="/proc";
chdir$PROC_DIR;
my@pids=glob"[0-9]*";
formy$pid(@pids){
open(FH,"$pid/cmdline")ordie"Can't$pidfile$!";
$Phash->{$pid}=$_while<FH>;
}
delete$Phash->{"$$"};
formy$pid(keys%$Phash){
print$pid,"\n"if$Phash->{$pid}=~/$ProcessName/;
}
return0;
}