Bug 186931 - less breaks with tcsh's printexitvalue=1
less breaks with tcsh's printexitvalue=1
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: less (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Ivana Varekova
Mike McLean
Depends On:
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Reported: 2006-03-27 10:43 EST by Bastien Nocera
Modified: 2010-10-20 07:26 EDT (History)
2 users (show)

See Also:
Fixed In Version: RHBA-2006-0630
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 845527 (view as bug list)
Last Closed: 2006-09-06 09:59:49 EDT
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Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
lesspipe-no-compressor-error.patch (321 bytes, patch)
2006-03-27 10:43 EST, Bastien Nocera
no flags Details | Diff

  None (edit)
Description Bastien Nocera 2006-03-27 10:43:12 EST

1. Create a new user with the tcsh shell as the default
useradd test1 -s /bin/tcsh
2. Set the printexitvalue as a default
echo "set printexitvalue=1" > ~test1/.cshrc
3. Login as test1
su - test1
4. Try to see with less a file that doesn't have a handler in lesspipe.sh
$ less /etc/hosts
Exit 127
/etc/hosts (END)

This is due to lesspipe.sh trying to launch "--" as the viewer command
($DECOMPRESSOR isn't set)
Attached patch fixes that
Comment 1 Bastien Nocera 2006-03-27 10:43:12 EST
Created attachment 126827 [details]
Comment 3 Jack Neely 2006-05-09 15:57:19 EDT
This is not specific to tcsh's printexitvalue=1.  

This bug happens if the tcsh's startup scripts create any output.

Test Case:

1. Create /etc/profile.d/test.csh that contains:

echo "FOO"
2. Login as a user with tcsh as the default shell
3. Run: less /etc/hosts

Results: You see the word "FOO" displayed rather than the text of /etc/hosts

Cause: less does a popen("/bin/tcsh -c /usr/bin/lesspipe.sh /etc/hosts") where
the shell is gotten from the users default shell.  
Comment 10 Red Hat Bugzilla 2006-09-06 09:59:49 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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