Commands by rez0r (6)

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list block devices
Shows all block devices in a tree with descruptions of what they are.

get a random 0/1, use it for on/off, yes/no
use it to add a random boolean switch to your script

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

Easy way to scroll up und down to change to one of n last visited directories.
This alias is meant to append n (here is n=10) most recently used cd commands to the bottom of history file. This way you can easily change to one of previous visited directories simply by hitting 1-10 times arrow up key. Hint: You can make more aliases implying the same rule for any set of frequently used long and complex commands like: mkisof, rdesktop, gpg...

Capture video of a linux desktop
This will grab the image from desktop, starting with the upper-left corner at x=100, y=200 with a width and height of 1024?768.

Signals list by NUMBER and NAME

Transfers clipboard content from one OS X machine to another
This uses ssh to transfer the contents of one Mac's clipboard to another's. This only works with plain text, sadly. Trying to transfer images will just clear out the remote machine's clipboard, and rich text will be converted to plain text. Using the "Remote Login" must be enabled on the remote machine (via System Preferences' Sharing panel) for this to work.

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

Edit the list of to ignore files in the active directory
Standard command, but I always have to search for it... ;-)

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }


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