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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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find out which directory uses most inodes - list total sum of directoryname existing on filesystem

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Change string in many files at once and more.
Find all files that contain string XXX in them, change the string from XXX to YYY, make a backup copy of the file and save a list of files changed in /tmp/fileschanged.

easily find megabyte eating files or directories

Yet Another Large Screen Clock

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Determine an image's dimensions
Simple use of ImageMagick identify function.

List programs with open ports and connections

Using a single sudo to run multiple && arguments
Bash's here string

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.


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