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Recursive chmod all *.sh files within the current directory
This command is useful to recursively make executable all "*.sh" files in a folder. This command is useful to apply chmod recursively in a determined kind of file.

Stop Flash from tracking everything you do.
Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

disable history for current shell session

Number of commits per day in a git repository

Print every Nth line
Sometimes commands give you too much feedback. Perhaps 1/100th might be enough. If so, every() is for you. $ my_verbose_command | every 100 will print every 100th line of output. Specifically, it will print lines 100, 200, 300, etc If you use a negative argument it will print the *first* of a block, $ my_verbose_command | every -100 It will print lines 1, 101, 201, 301, etc The function wraps up this useful sed snippet: $ ... | sed -n '0~100p' don't print anything by default $ sed -n starting at line 0, then every hundred lines ( ~100 ) print. $ '0~100p' There's also some bash magic to test if the number is negative: we want character 0, length 1, of variable N. $ ${N:0:1} If it *is* negative, strip off the first character ${N:1} is character 1 onwards (second actual character).

lists files and folders in a folder
lists files and folders in a folder with summary.

list files recursively by size

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

Find files with the same names in several directories.
cat file1 file2 file3|sort|uniq -d finds the same lines in several files, especially in files with lists of files.

Get information about memory modules
To take information about the characteristics of the installed memory modules.

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