nohup broken in sh-utils-2.0.15-2

Mon Jan 13 03:04:00 GMT 2003

Michael A Richmond wrote:
> When I run nohup from sh-utils-2.0.15-2, I get the message
>> exec: --: not found
>> The version of nohup in sh-utils-2.0-3 does not produce this error.

The problematic line in nohup is the last one: exec -- "$@"
In sh-utils-2.0 this was: exec "$niceprog" -5 -- "$@"
Given that exec is a shell builtin and nohup is run under /bin/sh which 
should be ash.
Extract from the ash man page:
exec [ command arg... ]
 Unless command is omitted, the shell process is replaced with the
 specified program (which must be a real program, not a shell
 builtin or function). Any redirections on the exec command are
 marked as permanent, so that they are not undone when the exec
 command finishes. If the command is not found, the exec command
 causes the shell to exit.
So removing the -- command protection as ash's exec doesn't take any 
options fixes the problem (and keychain works again).
But if bash has been copied to /bin/sh then there will be a problem for 
commands with a leading dash.
Extract from the bash man page:
exec [-cl] [-a name] [command [arguments]]
 ...
But testing for this and setting a shellvariable according seems to fix 
it for both ash and bash.

--- /usr/bin/nohup.orig 2003年01月05日 04:15:00.000000000 +0100
+++ /usr/bin/nohup 2003年01月07日 02:32:59.000000000 +0100
@@ -76,4 +76,6 @@
 exec 2>&1
 fi
-exec -- "$@"
+DD=`(exec -l echo "--" 2>/dev/null)`
+
+exec $DD "$@"
-- 
Med venlig hilsen / Kind regards
Hack KampbjÃ¸rn
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