redet – build regular expression (regex) for any program.


Even if someone is a regex guru there are times that people get confused with some regular expression and want to either test it out or want to some help. Behold, redet is here. Lets start with …

Detecting URLs in a Block of Text


Jan Goyvaerts on <a href="" target="_blank">Detecting URLs in a Block of Text In his blog post <a …

grep -v with multiple patterns.


$ sed '/test/{/error|critical|warning/d}' somefile If you wanted to do all in one command, you could go w/ sed instead […] <a href=""><img …

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