On Jul 3, 2022, at 1:43 PM, David Brostoff <dav...@earthlink.net> wrote:
> On Jul 3, 2022, at 7:26 AM, David Kelly <dke...@hiwaay.net> wrote:
>>
>> Create an awk script file. Lets call it "script.awk" that looks like this:
>>
>> {
>> print $1 >> "col-1.txt"
>> print $2 >> "col-2.txt"
>> }
>
> Is creating an awk script file different from entering the above script in
> Terminal?
>
> If not, do I add "awk" before the leading curly bracket?
No, create a file exactly as shown above. 4 lines. Use a tab or a space or many
spaces, it doesn't matter.
The difference is by putting the script (awk commands) in a file we don't have
to figure out how to escape the newline between the two actions. That kind of
thing varies depending on what shell you are using in Terminal.
Also putting the script in a file lets you create very complex scripts.
macOS Monterey seems to come with every popular Unix shell: sh, csh, tcsh, zsh,
and bash. zsh seems to be the default now.
As I originally stated, you now invoke the script file with
"awk -f script.awk " with a trailing space then drag your input file to the
command line to finish.
-f tells awk to get its commands from the specified file rather than the
command line.
--
David Kelly N4HHE, dke...@hiwaay.net
============================================================
Whom computers would destroy, they must first drive mad.
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