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29 lines
714 B
Markdown
29 lines
714 B
Markdown
# Global Substitution On The Previous Command
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Let's say we just executed the following command:
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```bash
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$ grep 'foo' foo.md
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```
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It gave us the information we were looking for and now we want to execute
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a similar command to find the occurrences of `bar` in `bar.md`. The `^`
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trick won't quite work here.
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```bash
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$ ^foo^bar<tab>
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$ grep 'bar' foo.md
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```
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What we need is a global replace of `foo` in our previous command. The `!!`
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command can help when we sprinkle in some `sed`-like syntax.
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```bash
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$ !!gs/foo/bar<tab>
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$ grep 'bar' bar.md
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```
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For a short command like this, we haven't gained much. However, for large
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commands that span the length of the terminal, this can definitely save us
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a little trouble.
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