Re^2: Non-shell-invoking system/exec and qx//

[ikegami]

in reply to Re: Non-shell-invoking system/exec and qx//
in thread Non-shell-invoking system/exec and qx//

That's not true. No shell is involved in the second snippet. (Check the ppid of ps.)

$ perl -e'system "ps -opid,ppid,cmd 2>/dev/null"'
  PID  PPID CMD
11096  7077 -bash
 5166 11096 perl -esystem "ps -opid,ppid,cmd 2>/dev/null"
13220  5166 sh -c ps -opid,ppid,cmd 2>/dev/null
19387 13220 ps -opid,ppid,cmd

$ perl -e'system "ps -opid,ppid,cmd"'
  PID  PPID CMD
11096  7077 -bash
13513 11096 perl -esystem "ps -opid,ppid,cmd"
26826 13513 ps -opid,ppid,cmd