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Example:
$ echo '$foo' | tcsh -e
<< empty >>
If using this pseudo patch to /etc/profile.d/kde.csh:
-if ( ! $?KDE_IS_PRELINKED ) then
+if ( ! $?KDE_IS_PRELINKED && -f /etc/sysconfig/prelink ) then
then it works.
The issue happens in Fedora and other RHEL releases, as long
as kde-settings is installed and prelink is not installed.
This turned out to be more complicated situation.
Even if prelink is installed, but disabled, as is the case of
the user, because the grep command exits with a non zero status,
tcsh -e would still fail.
One construct for a /etc/sysconfig/prelink with PRELINKING=no
to work with 'tcsh -e' would be:
## When/if using prelinking, avoids use of kdeinit
if ( ! $?KDE_IS_PRELINKED && -f /etc/sysconfig/prelink ) then
set prelink=`grep 'PRELINKING=' /etc/sysconfig/prelink | sed -e 's/.*=//'`
if ( X$prelink == Xyes ) then
setenv KDE_IS_PRELINKED 1
endif
endif
User is aware that prelink is not supported/recommended in rhel7, but
right now cannot remove the package.
A patch must be added even is prelink is not installed, because
if the environment variable KDE_IS_PRELINKED is not set, it will
blindly attempt to read /etc/sysconfig/prelink and cause 'tcsh -e'
to silently fail, because of the error on the startup script.
Thanks for the test. The reproducer is somewhat bogus.
The proper test could be done using both, double and single quotes.
With double quotes, $foo usually will expand to an empty string before tcsh
invocation, what will just check tcsh initialization files.
With single quotes the error should be expected, and just show tcsh -e
error checking passed all initialization scripts, and got the error on
a undefined variable.
I'd like to also say that I am seeing this issue. Prelink is installed but disabled, and the /etc/profile.d/kde.csh prevents my user from running 'tcsh -e'. Can we please have a fix/patch for this?
Thanks,
Jason
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (fltk bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:3872