Commands using dig (42)

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Watch several log files of different machines in a single multitail window on your own machine
this way you have the multitail with all its options running on your own machine with the tails of the two remote machines inside :)

Merge several pdf files into a single file
merge a.pdf b.pdf and c.pdf and create ./out.pdf

Get full from half remembered commands
Show all commands having the part known by you. Eg: $apropos pdf | less

Ultimate current directory usage command
Based on the MrMerry one, just add some visuals and sort directory and files

Print current running shell, PID
works as well as echo $0, but also prints process id, which pts you're using. echo $SHELL doesn't always get updated when changing shells, so this is a better solution than that. Just one more variation on a theme.

Quickly analyse an Apache error log
This searches the Apache error_log for each of the 5 most significant Apache error levels, if any are found the date is then cut from the output in order to sort then print the most common occurrence of each error.

wget with resume
I couldn't find this on the site and it's a useful switch. Great for large files.

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.

Download 10 random wallpapers from images.google.com

Recording the desktop and an application audio source for webcast
You will have to use the sound preferences (record) to choose the audio source and set it to internal.


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