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I have these:
$ cat a.tmp ABB.log ABB.log.122 ABB.log.123 I wanted to find a exact match of ABB.log.
But when I did
$ grep -w ABB.log a.tmp ABB.log ABB.log.122 ABB.log.123 it shows all of them.
Can I get what I wanted using grep?
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The grep command prints entire lines when it finds a match in a file. To print only those lines that completely match the search string, add the -x option. The output shows only the lines with the exact match.
The easiest of the two commands is to use grep's -w option. This will find only lines that contain your target word as a complete word. Run the command "grep -w hub" against your target file and you will only see lines that contain the word "hub" as a complete word.
Use the -A argument to grep to specify how many lines beyond the match to output. And use -B n to grep lines before the match. And -C in grep to add lines both above and below the match!
To display only the lines that do not match a search pattern, use the -v ( or --invert-match ) option. The -w option tells grep to return only those lines where the specified string is a whole word (enclosed by non-word characters). By default, grep is case-sensitive.
grep -Fx ABB.log a.tmp From the grep man page:
-F, --fixed-strings
Interpret PATTERN as a (list of) fixed strings
-x, --line-regexp
Select only those matches that exactly match the whole line.
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Simply specify the regexp anchors.
grep '^ABB\.log$' a.tmp If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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