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check open ports without netstat or lsof

Recursively touch all files and subdirectories

check open ports without netstat or lsof

Instantly load bash history of one shell into another running shell
By default bash history of a shell is appended (appended on Ubuntu by default: Look for 'shopt -s histappend' in ~/.bashrc) to history file only after that shell exits. Although after having written to the history file, other running shells do *not* inherit that history - only newly launched shells do. This pair of commands alleviate that.

Quickly create an alias for changing into the current directory
Put the function in your .bashrc and use "map [alias]" to create the alias you want. Just be careful to not override an existing alias.

Emptying a text file in one shot
% = buffer d = delete

pretend to be busy in office to enjoy a cup of coffee
Not as taxing on the CPU.

Rename files in batch

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

get a mysqldump with a timestamp in the filename and gzip it all in one go
Performs a mysqldump and gzip-compresses the output file with a timestamp in the resulting dump file. Inspect the file for integrity or fun with this command afterward, if you desire: $ zcat mysqldump-2009-06-12-07.41.01.tgz | less


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