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Fix extended regular expressions

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By default, grep already uses regular expressions when searching.

The example `grep -e {{^regex$}} {{path/to/file}}` is the same as `grep {{^regex$}} {{path/to/file}}`.

However, because of the comment about extended regular expressions, I mistakenly assumed `-e` was the option to enable it.

I believe most people would refer to `tldr` in this use case looking for the `-E` extended regular expressions.

With this in mind, I believe that example would be better rephrased as this pull request makes it.
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thalesmello 2016-07-04 17:40:04 -03:00 • committed by GitHub
parent ed44949bcb
commit 0579b0993c
1 changed files with 2 additions and 2 deletions
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pages/common/grep.md
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@ -15,9 +15,9 @@
`grep -rI {{search_string}} .`
- Use a regular expression (`-E` for extended regex, supporting `?`, `+`, `{}`, `()` and `|`):
- Use extended regular expressions (supporting `?`, `+`, `{}`, `()` and `|`):
`grep -e {{^regex$}} {{path/to/file}}`
`grep -E {{^regex$}} {{path/to/file}}`
- Print 3 lines of context around each match: