Miscellaneous Tools

Question 1

‘ps’

Answer 1

gives the list of processes

Question 2

‘kill’

Answer 2

can kill a process, you have to write pid given by ps

Question 3

‘&’

Answer 3

will force process to run in background

Question 4

‘ctrl z’

Answer 4

for suspending a process

Question 5

‘ctrl c’

Answer 5

to kill a process

Question 6

‘bg’

Answer 6

running a process in background

Question 7

‘fg’

Answer 7

bringing a process in foreground

Question 8

‘finger’

Answer 8

gives list of user on a machine

Question 9

‘finger username’

Answer 9

will give some details about use

Question 10

‘finger user@desh’

Answer 10

will tell when user has last checked his mails

Question 11

‘who’

Answer 11

gives all users on a macine

Question 12

‘rwho’

Answer 12

gives all users on all the machines

Question 13

Use man and man –k

Answer 13

Help for using any command

Question 14

‘passwd’, ‘yppasswd’, ‘kpasswd’

Answer 14

-Change password

Question 15

‘talk username@machine’

Answer 15

Try this when one of your friend is login on another machine. This you will feel better than yahoo or msn messenger

Question 16

lp, lpr

Answer 16

-Printing

Question 17

‘lpq’

Answer 17

or checking request queue on printer

Question 18

‘ruptime’

Answer 18

gives list of all the machines and their load and number of users on each

Question 19

NIS and LDAP

Answer 19

All user accounts are created and maintained on one machine (NIS server), other machines use this info (By creating account on NIS server you can login anywhere)

Question 20

NFS

Answer 20

All HOME’s are on NFS server, all other machines “mount” it from there. (Wherever you login, you see same files)