Recovering files in Unix

If you really need to undelete a file, that's the way to do it:

grep -a -B[size before] -A[size after] 'text' /dev/[your_partition]

Replace [size before], [size after] and [your_partition] with something meaningfull. Don't know what your partition is? Read the Linux undelete manual!

e.g.: If you want to undelete a letter (+- 200 lines) starting with "Hi mum" which was stored on /dev/hda1 you can try:

grep -a -B2 -A200 "Hi mum" /dev/hda1

Make sure you do this as root (System administrator)

Read the grep manual page for more information!

Read your unix's manual. Perhaps it contains an own undeletion program.