Public bug reported: Binary package hint: dash
The problems with making /bin/sh symlink to dash instead of bash are known (#141481), but I haven't seen this particular problem reported yet. dash and bash process the ^C (INT) signal differently. Try running the following script (then type ^C) with both bash and dash: <<< tint() { echo int; } thup() { echo hup; } tchld() { echo chld; } tterm() { echo term; } texit() { echo exit; } # trap tint INT trap thup HUP trap tchld CHLD trap tterm TERM trap texit EXIT echo type ^C... sleep 100 >>> bash triggers the EXIT. dash triggers no trap. If you uncomment the INT trap, bash triggers INT and EXIT, and dash triggers INT, CHLD, and EXIT. I don't know what POSIX dictates or which is correct, I am guessing that any exit should trigger EXIT (so dash is wrong). Either way, the shells behave differently, and the difference is causing problems in existing Ubuntu scripts. (I found it in /usr/bin/xeno- test.) ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: dash 0.5.5.1-3ubuntu2 ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5 Uname: Linux 2.6.32-23-generic i686 Architecture: i386 Date: Thu Jul 22 15:12:27 2010 ProcEnviron: PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: dash ** Affects: dash (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 lucid -- dash does not handle ^C trap the same way that bash does https://bugs.launchpad.net/bugs/608894 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs