[Bug 1055551] Re: zsh can causes ps to generate error message

Brian Murray brian at ubuntu.com
Tue Sep 25 16:09:26 UTC 2012

** Changed in: procps (Ubuntu)
       Status: New => Confirmed

** Changed in: procps (Ubuntu)
   Importance: Undecided => Medium

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  zsh can causes ps to generate error message

Status in “procps” package in Ubuntu:

Bug description:
  (ps|grep foo;echo)
  Signal 18 (CONT) caught by ps (procps-ng version 3.3.3).
  ps:display.c:59: please report this bug

  (ps;echo)  # works
  (ps|grep foo) # works
  (ps|grep foo;echo) # fails

  This behaviour seems to be caused by zsh since it is not observable
  using bash. Note too that this bug cannot be recreated on precise.

  zsh configuration is stock "system configuration" (run zsh for first
  time and select option (2) - system defaults).

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: zsh 5.0.0-2ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
  Uname: Linux 3.5.0-15-generic i686
  ApportVersion: 2.5.2-0ubuntu4
  Architecture: i386
  Date: Mon Sep 24 16:01:37 2012
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120530)
   PATH=(custom, no user)
  SourcePackage: zsh
  UpgradeStatus: No upgrade log present (probably fresh install)

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