Shell Programming and Scripting

hi guys :>

after reading several beginner tutorials and howtos i got still some questions concerning a script, i'm working on atm.

Is it possible to check if a mounted cd (cdrw) is readable and/or writable (clean disk)?

Is it possible to open a new window which displays the output of the script (echo "bla etc")? it should pops up after clicking the executed script.

best regards

If your CD is mounted at, for example, /mnt/cd, then you can use some file test operators in bash to check whether you have read or write permissions, e.g.

Code:

if [ -r /mnt/cd ]; then
...
fi
if [ -w /mnt/cd ]; then
...
fi

For opening a new window, you could try

Code:

xterm -e 'echo "bla etc"'

Note that the xterm window will exit when the last command run in it exits. So you should add more stuff to make it persist for longer. Depends on what you want the window to do.

yeah, that's cool
thanks for your comment

is it possible to close the xterm after x seconds?

xterm -name mytest..... &

# Put process into background

PID=`ps -ef|grep xterm|grep mystest|sed /grep/d|awk '{print $2}'`

# Get the process ID

sleep 5

# Sleep for 5 seconds

kill $PID

# Kill it

When getting the PID you need to make sure that it is the Xterm you started hence the mytest in my example.

I would sleep in the xterm itself, i.e.

Code:

xterm -e 'echo "bla etc"; sleep 5'

yeah, it's working! you guys are great. thanks a lot for your helpfulness

Yep that is definitely easier doh!!