sox - Modify wav files (speed, echo, fade, etc)

zcat /proc/config.gz | less to get the configuration of the running kernel.

To turn off beeps
-----------------
xset b off
xset b 0 0 0

In terminal: echo -e "\33[11;0]"

KDE: Control Center (kcontrol), Sound & Multimedia, System Notifications, 
Quick Controls -> Turn Off All Sounds (check 'Apply to all applications'),
Control Center (kcontrol), Sound & Multimedia, System Bell, Volume 0%
 (check 'Use system bell instead of system notification)

Burning CDs - k3b has a nice GUI frontend

Printing text files, one page per sheet with title:
a2ps -R --columns=1 --center-title='the title' <filename>

sux to 'su' to root and maintain the X display exported to your local machine.

On the workspace switcher applet, put your mouse over the applet and use the 
scroll button to switch desktops.

On SuSE 9.3, you can have unreliable DNS issues where 'host example.com' works 
but 'ping example.com' doesn't work.  To fix this, turn off the Nameserver 
caching daemon: chkconfig --del nscd, rcnscd stop

On SuSE 9.3, if you dislike the default mouse icons (like I do) edit 
/etc/sysconfig/windowmanager and change the X_MOUSE_CURSOR value.  Possible 
themes can be found in /usr/X11R6/lib/X11/icons/

If you get the following error running BitTorrent apps: ImportError: No module 
named BitTorrent.download, just set the path to python: 
export PYTHONPATH=/usr/lib/python2.3/site-packages

In Mutt, to bounce all messages to another address, type T, then a regex 
(to select all, use .*), then ';b' (; means to apply the bounce to the tagged 
messages).

In Mutt, to mark all messages as read, type '.c' (without the quotes of course).

In Gnome my number pad stops working occasionally.  I think it may be a 
shortcut I'm accidentally enabling, but somehow the accessibility keys are 
activated.  To resolve the problem, go to the control panel, accessibility, 
and enable and then disable the keyboard accessibility features.

To rename multiple files at once, use the rename command, contained in 
util-linux (on Fedora at least).
For example, to rename all .htm files to .html, run:
rename .htm .html *.htm (change .htm to .html on all files matching *.htm)

To log a shell session to a file, run 'script', then run all your commands.  
If you pass it a filename, it will log to that file, otherwise it will log 
to a file called typescript.

To reformat a program written in C, use a utility called indent.

To find out what version you're running: cat /etc/issue or if the command
exists, run lsb_release -a

When a command isn't working right and you're out of ideas, try running
strace and then the command to see everything it's trying to do.  The output
is extremely verbose, but it can help you troubleshoot the issue.

To figure out what process is running on a specific TCP port (1000):
  lsof -i TCP:1000
  fuser -n tcp -v 1000
  netstat -nlp | grep 1000

To monitor disk activity
  file access routines: sar -a
  activity for block devices: sar -d
  paging activity: sar -g
  iostat
  vmstat -d

To list Samba shares:
  smbclient -L //<host> (hit enter at password prompt)

Updated Sep 21, 2007