Reader Feedback and Insights: Splitting a Qshell Variable
August 30, 2002 Timothy Prickett Morgan
Hey, Ted:
The tech tip for splitting a Qshell variable is certainly one way to do it, but it seems to me a roundabout approach.
My first thought would be to use the “split” command in awk, but awk does not seem to be a supported language in Qshell.
Instead, I would use the “cut” command, which is supplied along with Qshell. Something like this example:
first=$(echo $name | cut -d " " -f 1) last=$(echo $name | cut -d " " -f 2)
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We have to pipe the variable into the “cut” command because cut normally works on standard input or files. We have to specify the delimiter with the “-d” option if it isn’t the default, which is a tab character. The “-f ” specifies which field we want.
Note that the “cut” command also allows the chopping up of any line into fields based on absolute position.
The point of all this is “The Unix Way”–Multiple small utilities that can be rapidly strung together to get what you want.
— Tom Henderson
Thanks for sharing this technique, Tom. I played with it some more and found a simpler version of the technique I originally presented.
set $name first=$1 last=$2
It seems like any way you do it, it is a roundabout approach.
— Ted
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