5. Explain clearly the function of mount utility. [5 marks] 6. Explain why it is

Question

5. Explain clearly the function of mount utility. [5 marks] 6.

Explain why it is not a good idea to mount anything on root (/). [5 marks]

7. a. What happens if you issue a command to unmount a system that is currently in use? [3 marks] b. How could you kill the process(es) that is (are) using the system and unmounts the system? [1 mark] c. How could you umount all mounted systems that are not in use? [1 marks]

8. a. What is the purpose of the utility du? [2.5 marks] b. What are the different options that you could use with du? Explain the purpose of these options. [2.5 marks]

9. a. What is the purpose of fstab? [2.5 marks] b. Explain the contents of 6 columns that it usually displays. [2.5 marks]

10. Explain the main functions of the utility yum.

Explanation / Answer

5)Answer

Mount:

In computers, to mount is to make a group of files in a file system structure accessible to a user or user group. In some usages, it means to make a device physically accessible. For instance, in data storage, to mount is to place a data medium (such as a tape cartridge) on a drive in a position to operate. Macintosh calls it mounting when a user inserts a disc into the machine

In a UNIX environment, the mount command attaches discs, or directories logically rather than physically. The Unix mount command makes a directory accessible by attaching a root directory of one file system to another directory, which makes all the file systems usable as if they were subdirectories of the file system they are attached to. Unix recognizes devices by their location, as compared to Windows, which recognizes them by their names (C: drive, for example). Unix organizes directories in a tree-like structure, in which directories are attached bymounting them on the branches of the tree. The file system location where the device is attached is called amount point .

Mounts may be local or remote. A local mount connects disc drives on one machine so that they behave as one logical system. A remote mount uses Network File System ( NFS ) to connect to directories on other machines so that they can be used as if they were all part of the user's file system.

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