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STiAT

Member

From: Vienna, Austria

Registered: 2004-12-23

Posts: 606

Shell and returns

Hey guys. I'm having troubles with return values by shell.

Expect the following command (out of perl):

$sshcommand = sprintf ("ssh %s \". ./.profile && wsetemsg -t %s cUser %s 2>&1 && wsetemsg administrator=%s cUser %s\"", $usr_server, "ACK", $origid, $$row[4], $origid);

$rv = `$sshcommand`

Now, as you can see i connected two commands, usin && calling by ssh. That's nothing very uncommon.

Anyway, the problem is the return value. I'm used to shift values by 8, like

$rc = $? >> 8;

In this case, when connecting two commands (rather 3, but just two have return values, what's the two wsetemsg, which both return 128, or 0 after shifting for 8), by shifting by 8 i get the 16777215 back as a return.

What does the shell do with those values on connect? Merging? Calculating?

I'd be thankful for any advice.
Yours,
Georg

Last edited by STiAT (2007-06-11 13:33:18)

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