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Unix tool tip
Tips on Unix utilities and related topics from .
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Unix tool tip 9h
sort -c doesn't sort but checks whether a file is sorted, reporting first exception if not sorted.
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Regular Expression 14h
“Your password must contain an uppercase letter, a lower case letter, and a number or special character.” Very often matches [A-Z][a-z]+[12!]
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Unix tool tip Feb 14
If you only need to know the number of lines in a large file, wc -l is much faster than wc.
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Unix tool tip Feb 13
Suppress file name when searching over multiple files: grep -h
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🔎Julia Evans🔍 Feb 12
every linux networking tool I know (PDF poster: )
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Unix tool tip Feb 12
Generate your .bashrc PS1 prompt easily with a drag and drop interface
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Unix tool tip Feb 11
Day of the year: date +'%j'
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Unix tool tip Feb 11
More shell, less egg
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Unix tool tip retweeted
🔎Julia Evans🔍 Feb 9
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Unix tool tip Feb 8
Don't copy-paste from a website to a terminal
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Unix tool tip Feb 7
The GNU version of date lets you do things like the following: date -d 'today + 90 days'
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Unix tool tip Feb 6
GNU Coreutils Cheat Sheet by
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Unix tool tip Feb 5
How to Protect Your Privacy on Linux
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Unix tool tip Feb 5
In bash, !?foo will repeat the most recent command that contained the string 'foo'.
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Unix tool tip Feb 4
ls -X will group files by extension.
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Unix tool tip Feb 1
Inside less, /foo will search for 'foo'.
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Unix tool tip Jan 31
In bash, ^foo^bar repeats the latest command, replacing the first instance of 'foo' with 'bar'.
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Unix tool tip Jan 30
Emacs dired takes the same switches as ls. C-u C-x d will prompt for switches then open dired.
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Unix tool tip Jan 29
Delete blank lines: awk NF
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Unix tool tip Jan 28
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