a=Hello-World
b=$(a|cut -d- -f1)
echo "$b"
The above commands are not working for me. Any input?
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https://unix.stackexchange.com/help/how-to-ask and https://www.gnu.org/software/bash/manual/html_node/Command-Substitution.html – ilkkachu Nov 14 '17 at 08:59
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3"Not working", what do you mean by that terribly tough support question? I.e. what do you expect to happen, and which doesn't seem to be the case? After you edit your question to clarify that, I'll consider removing my downvote – Pierre.Vriens Nov 14 '17 at 09:01
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2Please explain what you mean by not working. Add any error messages to the question. – ctrl-alt-delor Nov 14 '17 at 10:08
1 Answers
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a=Hello-World
b=$(echo $a|cut -d- -f1)
echo "$b"
Why do people always ask such very easy questions? RTFM can resolve most of these questions. Learn by yourself first please.
Bruce
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2You forgot the quotes, you can't use
echofor arbitrary data,cutworks on each line of its input not on its input as a whole, command substitution strips trailing newline characters. Would be better asb=${a%%-*}here. – Stéphane Chazelas Nov 14 '17 at 09:06 -
I know every detail(or knowledge) you mentioned. What I write here is in regard to the specific question. – Bruce Nov 14 '17 at 09:16
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2Why do people use echo or forget to quote their variables when they know it's wrong and bad practice? – Stéphane Chazelas Nov 14 '17 at 09:26
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