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Description of problem: tcsh's -e flag prevents shell operation Version-Release number of selected component (if applicable): tcsh-6.18.01-8.el7.x86_64 How reproducible: Always Steps to Reproduce: 1. # Create a script: % echo "echo hello" > script.csh 2. # Run script with tcsh -e % tcsh -e ./script.csh 3. # See nothing at all Actual results: % Expected results: % hello Additional info: It appears that starting with RHEL7, the -e flag to tcsh just renders the entire shell inoperable. That switch is designed to force the shell to exit when a command returns non-zero exit status, but it now causes the shell to do nothing (other then exit with status 2). This works as expected on RHEL6: tcsh-6.17-35.el6_8.1.x86_64 and RHEL5: tcsh617-6.17-7.el5 Observed that it's also broken on Fedora 24's tcsh-6.19.00-10.fc24.x86_64
I was going to open an upstream bug report, but discovered this may be an issue limited to running tcsh on RHEL7. I've downloaded several upstream versions of tcsh (e.g. 6.18.01, 6.19, 6.20) and built them on both RHEL 6.8 and 7.3. The RHEL 6 builds work fine with -e, but fail on RHEL 7.
Feel free to close this report as NOTABUG. The is not a problem with tcsh, it's the fact that the "-e" flag is being used without the "-f" flag. This is causing "-e" to operate on the initialization scripts and (on our particular RHEL7 host) there is a 'grep' command up in /etc/profile.d/ksh.csh that exists with status 2. Due to -e, this causes the tcsh invocation to exit with status 2 -- well before the users script is ever invoked -- just as it should. In our case, RHEL6 doesn't have any commands up in /etc/profile.d/*.csh that exit with a non-zero status -- so it skates through that code without a problem.
(In reply to Angelo Bonet from comment #3) > Feel free to close this report as NOTABUG. > > The is not a problem with tcsh, it's the fact that the "-e" flag is being > used without the "-f" flag. This is causing "-e" to operate on the > initialization scripts and (on our particular RHEL7 host) there is a 'grep' > command up in /etc/profile.d/ksh.csh that exists with status 2. > > Due to -e, this causes the tcsh invocation to exit with status 2 -- well > before the users script is ever invoked -- just as it should. > > In our case, RHEL6 doesn't have any commands up in /etc/profile.d/*.csh that > exit with a non-zero status -- so it skates through that code without a > problem. Thank you very much, Angelo, for reporting this change in behaviour between RHEL6 and RHEL7. I wasn't aware of it, this might come in handy in the future. Much appreciated. Best regards, David