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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 38761] New: - error in .sh scripts: symbolic link resolution failure for relative symlinks on the PATH
Date Thu, 23 Feb 2006 03:41:54 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=38761

           Summary: error in .sh scripts: symbolic link resolution failure
                    for relative symlinks on the PATH
           Product: Tomcat 5
           Version: 5.5.14
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Unknown
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: adam@fortifysoftware.com


This problem occurs when you have a symbolic link to the tomcat scripts on your
PATH that links to the tomcat script using a relative path.

Steps to reproduce bug:

1. Go to some directory on your PATH. I'm using ~/bin which I've added to my PATH

2. Create a relative symlink to the tomcat statup script. I did: ln -s
../download/tmp/apache-tomcat-5.5.15/bin/catalina.sh start-tomcat

3. Run the symlink. It fails with the following message:
/home/adam/bin/start-tomcat: line 72: cd:
../download/tmp/apache-tomcat-5.5.15/bin/..: No such file or directory
Cannot find /home/adam/bin/setclasspath.sh
This file is needed to run this program


This can be fixed by changing the line:

if expr "$link" : '.*/.*' > /dev/null; then

to:

if expr "$link" : '/.*' > /dev/null; then

in all the .sh scripts. After changing it in catalina.sh, my relative symlink
works correctly. I've tested my fix using a chain of symlinks (both absolute and
relative) that finally resolve to catalina.sh and it seems to work fine.

One of my coworkers pointed out that this same error was in the Maven scripts,
and that they fixed it recently (looks like the same fix I suggested). I imagine
a lot of open source projects are sharing scripts and code, so if you agree that
this is the correct fix someone should check to see if other apache/jakarta
projects need their scripts updated.

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