helpThe GNU Bourne-Again SHell - Support: sr #108305, bash exec converts relative paths...


sr #108305: bash exec converts relative paths to absolute, Other Bourne-style shells don't (and I feel that's more sensible)

Submitted by:  Thomas Jahns <tjahns>
Submitted on:  Tue 21 May 2013 04:21:38 PM UTC  
Category: NonePriority: 5 - Normal
Severity: 3 - NormalStatus: Wont Do
Privacy: PublicAssigned to: None
Open/Closed: OpenOperating System: GNU/Linux

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Fri 13 Nov 2015 05:36:59 PM UTC, comment #1:

It's not a bug, simply behavior that results in a cosmetic difference. bash has always expanded the argument to `exec' to a full pathname, and there's no real reason to change that now.

Chet Ramey <chet>
Project Administrator
Tue 21 May 2013 04:21:38 PM UTC, original submission:


I ran into an inconsistency of bash vs. other shells like dash today on Debian/GNU Linux:

$ cat
#! /bin/sh
exec ./
$ cat
#! /bin/sh
echo $0
$ bash ./
$ dash ./

I also checked on AIX 6.1 with /bin/sh (which is old ksh) and /bin/ksh93, both give the same result as dash.

Since I see no reason why $0 should have different values on fork/exec vs. plain exec, I propose to change this unless there's a compelling reason to keep the deviation from expected behavior.

Kind regards, Thomas Jahns

Thomas Jahns <tjahns>


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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 13 Nov 2015 05:36:59 PM UTCchetStatusNone=>Wont Do
    Fri 13 Nov 2015 02:47:22 AM UTCchetStatusDone=>None
    Fri 13 Nov 2015 02:45:30 AM UTCchetStatusNone=>Done

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