Commands by dbart

Commands by dbart (2)

sorted by

Check for login failures and summarize

This command checks for the number of times when someone has tried to login to your server and failed. If there are a lot, then that user is being targeted on your system and you might want to make sure that user either has remote logins disabled, or has a strong password, or both. If your output has an "invalid" line, it is a summary of all logins from users that don't exist on your system. Show Sample Output
This is sample output - yours may be different.
```
3478 invalid
   1255 root
     11 mysql
      8 mail
      6 www-data
```
9

zgrep "Failed password" /var/log/auth.log* | awk '{print $9}' | sort | uniq -c | sort -nr | less

dbart · 2009-03-03 13:45:56 4
VMware Server print out the state of all registered Virtual Machines.

I use this command on my machines running VMware Server to print out the state of all registered Virtual machines. Show Sample Output
This is sample output - yours may be different.
```
/opt/vmware/vm1/vm1.vmx = on
/opt/vmware/vm2/vm2.vmx = on
/opt/vmware/vm3/vm3.vmx = off
/opt/vmware/vm4/vm4.vmx = on
```
3

for vm in $(vmware-cmd -l);do echo -n "${vm} ";vmware-cmd ${vm} getstate|awk '{print $2 " " $3}';done

dbart · 2009-02-26 16:45:04 1

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

convert single digit to double digits

each number in a file name gets expanded to the number of digets provided as arg_1 of the arguments in rjust_file_nums. Put the funciton in the .bashrc file. Be sure to $ source ~/.bashrc so that the function will be accessible from bash.

Stream YouTube URL directly to MPlayer

A function for streaming youtube to mplayer. The option "-g" for youtube-dl tells it to output the direct video URL, instead of downloading the video. "-fs" tells MPlayer to go FullScreen, and "-quit" makes it less verbose. Requires: youdube-dl ( http://bitbucket.org/rg3/youtube-dl/ ) (Tested in zsh)

a simple bash one-liner to create php file and call php function

Find usb device in realtime

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

Search some text from all files inside a directory

gag version of current date

list block devices

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

Console clock -- within screen

Configures screen to always display the clock in the last line (has to be configured only once). After that you not only have got the possibility to detach sessions and run them in background, but also have got a nice clock permanently on your screen.

function to compute what percentage of X is Y? Where percent/100 = X/Y => percent=100*X/Y

This function make it easy to compute X/Y as a percentage. The name "wpoxiy" is an acronym of "what percentage of X is Y"

Change the console keyboard layout

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by dbart