>I have been trying to do something that seems that it should be very
>simple in a shell script. I am trying to make a variable equal to the
>output of a command. The command started off very complex but I created
>a test script to bring it down to it's most simple form and it still
>does not work. Here is the test script:
>
>#!/bin/bash
># test script
>
>test1='pwd'
>echo $test1
>
>when in this format the test1 variable echo's the word pwd instead of
>the current directory.
>I have also tried
>test1= 'pwd' # test1 is null and command executes
>I am almost positive I have done this before in a script.
>Any help would be appreciate.
The correct syntax is:
test1=`pwd`
echo $test1
The ' characters is used to indicate that variable substitution is not to be
done, i.e.,
test='$variable'
will assign the string $variable to the test variable. If " is used, then
variable sustitution is done, i.e.:
variable=35
test="$variable"
will assign 35 to the test variable.
The ` character is used for command subsitution.
All of this is explained in the sh man page.
MB
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