From d83a0f038558cf32680287417bbd692b33fe13cc Mon Sep 17 00:00:00 2001 From: "Gregory S. Kielian" Date: Sat, 4 Oct 2014 14:50:00 -0700 Subject: Changed descriptions, added grep, fgrep examples --- bash.html.markdown | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/bash.html.markdown b/bash.html.markdown index 160fe8f2..9b199b8c 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -200,8 +200,12 @@ sort file.txt uniq -d file.txt # prints only the first column before the ',' character cut -d ',' -f 1 file.txt -# replaces every occurrence of 'apples' with 'oranges' in file.txt -sed -i 's/apples/oranges/g' file.txt -# prints the number of lines containing the string "foo" in file.txt -grep -c "foo" 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 ``` -- cgit v1.2.3