Commands tagged commandfu (3)

  • Explination: https://stackoverflow.com/questions/2257441/random-string-generation-with-upper-case-letters-and-digits/23728630#23728630 Why 16 Characters: https://www.wired.com/story/7-steps-to-password-perfection/ Show Sample Output


    -1
    python -c "import string; import random;print(''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits + string.ascii_lowercase) for _ in range(16)))"
    rootduck · 2019-06-14 17:35:12 2
  • Change :alnum: to :graph: for all printable characters Show Sample Output


    -2
    cat /dev/urandom |tr -c -d '[:alnum:]'|head -c 16;echo
    AndrewM · 2019-06-17 17:51:04 0
  • After you install slocate ,the first thing you have to do with it to initialise the database by issuing a command " slocate -u" . And then onwards just give the filename or dirname as a argument to the slocate command will reveal the files/dirs location in the system along with path.Moreover over it's an securely way of looking into the file system. Show Sample Output


    -3
    slocate filename/dirname
    unixbhaskar · 2009-08-29 03:28:08 0

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Edit all files found having a specific string found by grep
The grep switches eliminate the need for awk and sed. Modifying vim with -p will show all files in separate tabs, -o in separate vim windows. Just wish it didn't hose my terminal once I exit vim!!

Download all images from a 4chan thread
first grep all href images then sed the url part then wget

Show display adapter, available drivers, and driver in use

Replace duplicate files by hardlinks

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Inserts the results of an autocompletion in the command line
Pressing ESC then * will insert in the command line the results of the autocompletion. It's hard to explain but if you look the sample output or do $ echo ESC * you will understand quickly. By the way, few reminders about ESC : - Hold ESC does the same thing as tab tab - 'ESC .' inserts the last argument of last command (can be done many times in order to get the last argument of all previous commands)

Copy ssh keys to [email protected] to enable password-less ssh logins.
Alternative for machines without ssh-copy-id

Don't like the cut command? Tired of typing awk '{print $xxx}', try this

Search through files, ignoring .svn
By putting the "-not \( -name .svn -prune \)" in the very front of the "find" command, you eliminate the .svn directories in your find command itself. No need to grep them out. You can even create an alias for this command: $ alias svn_find="find . -not \( -name .svn -prune \)" Now you can do things like $ svn_find -mtime -3

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"


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