Commands tagged hex (25)

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check open ports without netstat or lsof

connect via ssh using mac address
Connect to a machine running ssh using mac address by using the "arp" command

Kill any process with one command using program name
This will kill all. e.g. killall firefox

Testing hard disk writing speed

Countdown Clock
Countdown clock - Counts down from $MIN minutes to zero. I let the date command do the maths. This version doesn't use seq.

ROT13 using the tr command

Tweak system files without invoking a root shell
only for sudo-style systems. Use this construct instead of I/O re-directors ``>'' or ``>>'' because sudo only elevates the commands and *not* the re-directors. ***warning: remember that the `tee` command will clobber file contents unless it is given the ``-a'' argument Also, for extra security, the "left" command is still run unprivileged.

Create a false directory structure for testing your commands
This will make a false directory with the same file names as whatever directory you choose. This is wise to use when testing scripts that alter contents, filenames, or move files. I wrote this after an OOPS I made when renaming a directory of JPGs, PNGs, PSDs that were mixed. I recommend this as I lost over 2000 vacation pictures and some graphics I designed for software and web sites. :( NOTE: This only creates name copies, that data itself is not copied.

Like top but for files
Like top, but for files

syncronizing datas beetween two folder (A and B) excluding some directories in A (dir1 and dir2)


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