Commands tagged file (87)

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Write comments to your history.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Undo mkdir -p new/directory/path
Removes all directories on given path, working from right to left, and stops when reaching a non-empty directory Counterpart of $ mkdir -p new/directory/path Shortcut (must be issues as next command immediately after mkdir): $ ^mk^rm ( see http://www.commandlinefu.com/commands/view/19/runs-previous-command-but-replacing )

Lookup autonomous systems of all outgoing http/s traffic

wrap long lines of a text
wraps text lines at the specified width (90 here). -s option is to force to wrap on blank characters -b count bytes instead of columns

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

Lists the size of certain file in every 10 seconds
watch is a command especially designed for doing this job

Lvextend logical volume
this command extends your logical volume. then it does a resize2fs on it as well. added the -r switch to make it launch resize.

Insert a line at the top of a text file without sed or awk or bash loops
Yet another way to add a line at the top a of text file with the help of the tac command (reverse cat).

How many days until the end of the year

Recursively touch all files and subdirectories


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