One of my configuration has a specific foo section: # Configuration foo - Start blah blah blah # Configuration foo - End
I have a vi command that replaces spaces characters by a hard tab: vi myfile.txt : # To go to the last line
This question already has answers here: Handling backreferences to capturing groups in re.sub replacement pattern
I have a weird mix of literal, visible and escaped control characters in a data dump that I need to clean (preferably with sed), f开发者_如何学编程or example ^A, ^B, \\N (literally), and visible newli
I currently use the following Perl one liner to match multiple lines in files recursively among subfolders. It works except that it forces you to use a . to match a \\n. But I am in need to use \\n be
I tried to remove all newlines in a pipe like this: (echo foo; echo bar) | sed -e :a -e N -e \'$!ba\' -e \'s/\\n/ /g\' | hexdump -C
I have one file contains several lines, each line has the format like 2011-07-10 condition hhh aaa: value bbb
I need to replace all $arr[key] with $arr[\'key\'] but not $arr[$key] or $arr[CONST] or already rewritten as $arr[\'key\']
I want to change the format of every line in a file, and also run another substitution on one of the matched groups.
I want to replace the value with a variable. The followin开发者_如何转开发g does not work because of the single quote used in sed.
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