Prints the type of computer you have.

I think this should be used more in distros and other applications because it is so easy to get. This can also be asked by tutorials as an easy way to get your base hardware.

Some alternatives:

and

I like to label my grub boot options with the correct kernel version/build.

After building and installing a new kernel with "make install" I had to edit my grub.conf by hand.

To avoid this, I've decided to write this little command line to:

1. read the version/build part of the filename to which the kernel symlinks point

2. replace the first label lines of grub.conf

grub.conf label lines must be in this format:

Latest [{name}-{version/build}]

Old [{name}-{version/build}]

only the {version/build} part is substituted.

For instance:

title Latest [GNU/Linux-2.6.31-gentoo-r10.201003]

would turn to

title Latest [GNU/Linux-2.6.32-gentoo-r7.201004]"

the last person who posted used the most roundabout way to concatinate files, there's a reason there's a "conCATinate" command... Using this method, you also get to choose the order of the files, below another person just did *.txt > combined.txt which is fine but the order depends on the implementation of "cat" which is probably alphabetical order of filenames.

Check if you have 64bit by looking for "lm" in cpuinfo. lm stands for "long mem". This can also be used without being root.

Get a list of all the unique hostnames from the apache configuration files. Handy to see what sites are running on a server. A slightly shorter version.

Get a list of all the unique hostnames from the apache configuration files. Handy to see what sites are running on a server.

A quick way of know the temperature info.

Saves to a PDF with title and alt text of comic.

As asked for on http://bbs.archlinux.org/viewtopic.php?id=91100

Change xkcd.com to dynamic.xkcd.com/comics/random for a random comic.

The command shows the real power of the pdftk tool, you can do basically everything you want with multiple pdf's.

In the command a book is created from chapters, headings and covers.

when someone mail you his ssh public key, and the lines are broken with '\n', you can reconstruct a new file with one key by line with this command.

I think I picked this one up from Hak5 (yeah I know.. kinda lame)

if you, like me, do not have the numsum, this way can do the same.

I must monitorize a couple of ftp servers every morning WITHOUT a port-scanner

Instead of ftp'ing on 100 ftp servers manually to test their status I use this loop.

It might be adaptable to other services, however it may require a 'logout' string instead of 'quit'.

The file ftps.txt contains the full list of ftp servers to monitorize.

Get Memeory Info

Col 1 is swapped sum in kb

Col 2 is pid of process

Col 3 is command that was issued

i wanted to delete all duplicate lines from .bash_history and keep the order of the other lines.

the command cat's the file and adds line numbers, then sorts by the second column. afterwards uniq omits repeated lines, but skips the first field (the line number). then it sorts by the line numbers and at the end cuts the numbers off.

cat - concatenate MP3 files and save it...

Searches all log files (including archived bzip2 files) for invalid user and PAM authentication errors, both of which are indicative of brute force attempts at logging into computer. A list of all unique IP addresses and domain names is appended to hosts.deny. The command (and grep error messages) will work on Mac OS X 10.6, small adjustments may be needed for other OSs.