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Merge pull request #789 from gskielian/master

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Added `sed ` and `grep` examples/descriptions to useful-commands
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Levi Bostian 2014-10-17 19:56:07 -05:00
commit 7cfa4a7d5d
1 changed files with 9 additions and 0 deletions
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bash.html.markdown
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@ -9,6 +9,7 @@ contributors:
- ["akirahirose", "https://twitter.com/akirahirose"] - ["akirahirose", "https://twitter.com/akirahirose"]
- ["Anton Strömkvist", "http://lutic.org/"] - ["Anton Strömkvist", "http://lutic.org/"]
- ["Rahil Momin", "https://github.com/iamrahil"] - ["Rahil Momin", "https://github.com/iamrahil"]
- ["Gregrory Kielian", "https://github.com/gskielian"]
filename: LearnBash.sh filename: LearnBash.sh
--- ---
@ -199,4 +200,12 @@ sort file.txt
uniq -d file.txt uniq -d file.txt
# prints only the first column before the ',' character # prints only the first column before the ',' character
cut -d ',' -f 1 file.txt cut -d ',' -f 1 file.txt
# replaces every occurrence of 'okay' with 'great' in file.txt, (regex compatible)
sed -i 's/okay/great/g' file.txt
# print to stdout all lines of file.txt which match some regex, the example prints lines which beginning with "foo" and end in "bar"
grep "^foo.*bar$" file.txt
# pass the option "-c" to instead print the number of lines matching the regex
grep -c "^foo.*bar$" file.txt
# if you literally want to search for the string, and not the regex, use fgrep (or grep -F)
fgrep "^foo.*bar$" file.txt
``` ```