Differences
This shows you the differences between two versions of the page.
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grep [2014/03/28 16:35] |
grep [2014/03/28 16:35] (current) |
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| + | ====== grep ====== | ||
| + | * [[ack]] | ||
| + | * [[sed]] | ||
| + | |||
| + | * **-x** - Select only those matches that exactly match the whole line. | ||
| + | |||
| + | == Check if a line exists == | ||
| + | |||
| + | Returns 0 or 1 exit codes | ||
| + | |||
| + | <code> | ||
| + | cat filelist | grep -xq string | ||
| + | </code> | ||
| + | |||
| + | == Return line number == | ||
| + | |||
| + | <code> | ||
| + | cat filelist -n string | ||
| + | </code> | ||
