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 Post subject: Opposite of Unix 'set'
PostPosted: Wed Aug 07, 2002 5:47 pm 
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Joined: Sat Jul 27, 2002 6:29 pm
Posts: 7
Hey guys,

In my shell, I do

$ set hello you

and hence $1=hello and $2=you

Anyone know how to remove this now?

I've had no luck using

$unset hello you


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 Post subject:
PostPosted: Wed Aug 07, 2002 7:00 pm 
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Joined: Sun Jun 30, 2002 10:51 am
Posts: 24
Location: /dev/null
What shell are you using? Bash example:

[redlander@acid vcd]$ VAR1=test
[redlander@acid vcd]$ set | grep VAR1=
VAR1=test
[redlander@acid vcd]$ unset VAR1
[redlander@acid vcd]$ set | grep VAR1=
[redlander@acid vcd]$

Simple as that - or am I missing something?


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 Post subject:
PostPosted: Wed Aug 07, 2002 11:50 pm 
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Joined: Sat Jul 27, 2002 6:29 pm
Posts: 7
Am using bash redlander.

$ set hello you
$ echo $1
hello
$ unset $1
$ echo $1
hello
$

After the unset, I want $1 to be back to the empty string. Any ideas what I'm doing wrong above.


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PostPosted: Thu Aug 08, 2002 8:50 am 
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Joined: Sun Jun 30, 2002 10:51 am
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Location: /dev/null
Oh...the set command shouldn't really be used for variable assignment. Every shell (except plain /bin/sh) passes set arguements as $1 $2 etc because they are treated as parameters for use in sourced scripts (or from the source command line). Short answer == don't set shell variables this way =)


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