Bug 186931

Summary: less breaks with tcsh's printexitvalue=1
Product: Red Hat Enterprise Linux 4 Reporter: Bastien Nocera <bnocera>
Component: lessAssignee: Ivana Varekova <varekova>
Status: CLOSED ERRATA QA Contact: Mike McLean <mikem>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: jjneely, tao
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2006-0630 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 845527 (view as bug list) Environment:
Last Closed: 2006-09-06 13:59:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 201655    
Attachments:
Description Flags
lesspipe-no-compressor-error.patch none

Description Bastien Nocera 2006-03-27 15:43:12 UTC
less-382-4

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 15:43:12 UTC
Created attachment 126827 [details]
lesspipe-no-compressor-error.patch

Comment 3 Jack Neely 2006-05-09 19:57:19 UTC
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:
---
#!/bin/tcsh

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 13:59:49 UTC
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.

http://rhn.redhat.com/errata/RHBA-2006-0630.html