Updating bin/pid to work more reliably.

bin/pid

@@ -4,18 +4,20 @@ if [[ "$1" == "-h" || "$1" == "--help" ]]; then cat <<HELP
 Get PIDs
 http://benalman.com/
 
-Usage: $(basename "$0") [PID]
+Usage: $(basename "$0") [processname [processname ...]]
 
-Get the PID(s) of matching process(es).
+Get the PIDs of all matching processes for all specified processnames.
+If no arguments are passed, list processes by PID, TTY, USER, COMMAND.
 
-Copyright (c) 2011 "Cowboy" Ben Alman
+Copyright (c) 2012 "Cowboy" Ben Alman
 Licensed under the MIT license.
 http://benalman.com/about/license/
 HELP
 exit; fi
 
 if [ ! "$1" ]; then
-  ps axo pid,tty,user,command | sort -bdfk4
+  ps axo pid,tty,user,command
 else
-  echo $(ps axo pid,tty,user,command | grep -w "$@" | sort -g | awk '{print $1}')
+  args="$1"; shift; for arg in "$@"; do args="${args}|${arg}"; done
+  echo $(ps axo pid,tty,user,command | perl -nle"m#^\s*(\d+).*(?:$args)# && !m#.dotfiles/bin/pid# && print \$1")
 fi