Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 389

-l
Only lists the files in which searchstring does not occur
diff [options] file1 file2
The diff command compares the contents of any two files. The output produced
by the program lists all lines that do not match. This is frequently used by program-
mers who need only send their program alterations and not the entire source code.
-q
Only reports whether the two files differ
-u
Produces a "unified" diff, which makes the output more readable
File Systems
mount [options] [device] mountpoint
This command can be used to mount any data media, such as hard disks, CD-ROM
drives, and other drives, to a directory of the Linux file system.
-r
Mount read-only
-t filesystem
Specify the file system, commonly ext2 for Linux hard disks, msdos for
MS-DOS media, vfat for the Windows file system, and iso9660 for CDs
For hard disks not defined in the file /etc/fstab, the device type must also be
specified. In this case, only root can mount it. If the file system should also be
mounted by other users, enter the option user in the appropriate line in the /etc/
fstab file (separated by commas) and save this change. Further information is
available in the mount(1) man page.
umount [options] mountpoint
This command unmounts a mounted drive from the file system. To prevent data
loss, run this command before taking a removable data medium from its drive.
Normally, only root is allowed to run the commands mount and umount. To
enable other users to run these commands, edit the /etc/fstab file to specify
the option user for the respective drive.
Working with the Shell 373