My program does not start
If your program does not start
- make sure you have execute priviledges for it using the command
- make sure the program can load its libraries using the command
- look what the problem is using the command
- if it is a script make sure it has Unix linefeeds, not DOS ones, best use
My program aborts with an error message
Cannot do graphics
Warning: No xauth data; using fake authentication data for X11 forwarding.
=> have you changed your hostname?
My network connection is broken
Umount does not work
lsof | grep /mnt
Then kill the process.
root-Password is lost
To reset the root password, boot Linux with the parameter "init=/bin/bash" You get a root-shell. Enter:
mount -o remount, rw / passwd mount -o remount,ro /
find out which files are accessed by a program
To find out which files are accessed by a program start it with
strace -e open program
If you want every line to be shown with evaluated values, write the following to the beginning of the script:
or -xv for verbose
Get an problem with your display and you do not know if it is the graphics card, the monitor, or the display manager settings? See troubleshooting display