Commands by cayhorstmann (0)

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list the top 15 folders by decreasing size in MB
list the top 15 folders by decreasing size in MB

Show a git log with offsets relative to HEAD
Print a git log (in reverse order) giving a reference relative to HEAD. HEAD (the current revision) can also be referred to as HEAD~0 The previous revision is HEAD~1 then HEAD~2 etc. . Add line numbers to the git output, starting at zero: $ ... | nl -v0 | ... . Insert the string 'HEAD~' before the number using sed: $ ... | sed 's/^ \+/&HEAD~/' . Thanks to bartonski for the idea :-)

Print a random 8 digit number

Make vim open in tabs by default (save to .profile)
I always add this to my .profile rc so I can do things like: "vim *.c" and the files are opened in tabs.

Watch active calls on an Asterisk PBX
Only the number of calls nothing else.

Show memory stats on Nexenta/Solaris

generate a random 10 character password
generate a table with 10 character ambiguous random passwords which include at least one special character in in password

Create the directoty recursively

Use file(1) to view device information
file(1) can print details about certain devices in the /dev/ directory (block devices in this example). This helped me to know at a glance the location and revision of my bootloader, UUIDs, filesystem status, which partitions were primaries / logicals, etc.. without running several commands. See also: $ file -s /dev/dm-* $ file -s /dev/cciss/* etc..

Increase mplayer maximum volume
use '0' and '9' to increase/decrease volume. this is useful on laptops with low speaker volume.


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