Commands by Zenexer (2)

  • Thanks to OpenSSL, you can quickly and easily generate MD5 hashes for your passwords. Alternative (thanks to linuxrawkstar and atoponce): echo -n 'text to be encrypted' | md5sum - Note that the above method does not utlise OpenSSL. Show Sample Output

    echo -n 'text to be encrypted' | openssl md5
    Zenexer · 2009-03-18 00:11:46 4
  • A simple but effective replacement for ps aux. I used to waste my time running ps over and over; top is the way to go. It also allows complex sorting options. Press q to exit "nicely" (Ctrl + C is always an option, of course). Note that the list updates each second, resorting in the process; if you're trying to grab a specific PID, you might be better off with ps. htop Alternatively, htop is available, though it may not come pre-installed. htop is slightly more interactive than top and includes color coding, visuals, and a nice interface for selecting and then killing processes. (Thanks to bwoodacre for this great tool.) Show Sample Output

    Zenexer · 2009-03-18 00:03:42 6

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Gets the last string of previous command with !$
It helps you save a lot of writing :-)

Conficker Detection with NMAP

get absolute file path
Retrieve absolute path name from relative path

Display usb power mode on all devices

show the date every rpm was installed
the newest rpms are at the top; individual packages can also be queried this way: rpm --last -q package

The BOFH Excuse Server

Find files of two different extensions and copy them to a directory

Rename files in batch

Find the biggest files
Also: * find . -type f -exec ls -s {} \; | sort -n -r | head -5 * find . -type f -exec ls -l {} \; | awk '{print $5 "\t" $9}' | sort -n -r | head -5

scp a good script from host A which has no public access to host C, but with a hop by host B
middlehost allows ssh access from where you are but not securehost. Use nice ssh piping to simulate scp through A => B => C setting up the shell function if left as an exercise for the reader. ;-) Agent forwarding should avoid password typing.

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