I want to write a script that tells me if the tape device is ready, if the answer is not yes ($?is not 0) i get an answer that the tape_device is not ready. If the tape is ready i can do a
tar -cvf $tape1 * .
How can i write a script to control if the tapedevice is ready or not?
How can i write a script so i get an output on a file that tells me how many files are backup-ed.
i thought about the commands
tar -tvf $tape1 > mylist
and then do the command wc -l mylist
but how can i put the output into a variable for exemple $Mynumber, i thought about the command 'read 'but i dont know how to write it