Working on a script where I need to take a string, and remove everything after the last occurence of a certain character. In this case a hyphen.
For example, This-is-a-filename-0001.jpg should result in This-is-a-filename
asked Jan 15, 2023 at 20:18
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1Please add to your question (no comment): What have you searched for, and what did you find? What have you tried, and how did it fail?– CyrusCommented Jan 15, 2023 at 20:18
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Start with looking at something like this: stackoverflow.com/q/918886/4961700– Solar MikeCommented Jan 15, 2023 at 20:23
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2 Answers
You can cut strings in bash:
line="This-is-a-filename-0001.jpg"
echo "${line%-*}" # prints: This-is-a-filename
The %-*operator removes all beginning with the last hyphen.
You're looking for a sed within your script, something close to what's below.
sed 's!/[^/]*$!/!'
Generally, I would say, please do research before posting a question like yours since it's relatively easy to find the answers
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It is useful to wait with the answer until the questioner has shown what he has done to answer the question himself.– CyrusCommented Jan 15, 2023 at 20:26
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Why would you use any external command for something the shell can do built-in? This is much slower to run than using built-in parameter expansion. And because this example is searching on
/s instead of-s, it's not responsive to the question as-asked. Commented Jan 15, 2023 at 22:47