Not sure when this problem started. The issue: GNU screen is starting w/an empty or undefined value for $SHELL, so the login shell for all screen windows is incorrect:
$ uname -a; cygcheck -c cygwin CYGWIN_NT-5.1 aqua 1.7.16s(0.261/5/3) 20120604 01:26:35 i686 Cygwin Cygwin Package Information Package Version Status cygwin 1.7.15-1 OK $ cygcheck -f /bin/screen screen-4.0.3-7 $ grep SHELL ~/.screenrc shell -$SHELL $ echo $SHELL /bin/bash $ bash -c 'echo SHELL: $SHELL' # does this prove SHELL is exported? SHELL: /bin/bash $ screen --snip/switch to a separate shell to run [procps -wwH -o pid,ppid,user,tty,args -e]: 5988 2200 adm_tsr pty3 /bin/bash --login 1492 5988 adm_tsr pty3 screen 4476 1492 adm_tsr ? SCREEN 5420 4476 adm_tsr pty4 - --snip/now to shell w/pid 5420 inside screen: $ echo SHELL: \[$SHELL] SHELL: [] $ Notice above that pid 5420 is named '-', which corresponds to /bin/sh, instead of /bin/bash. $ command ps -elW |grep 5420 I 5420 4476 5420 2476 pty4 1008 07:54:08 /usr/bin/sh The workaround is to export SHELL prior to starting screen. I do not understand why that works, it seems that SHELL was already exported, since (in a non screen login shell): sh -c 'echo SHELL: $SHELL' echos /bin/bash Is anyone else seeing this issue? -- thanks, Tom -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
