How to display only hidden files in UNIX?
ls -a
ls -a|grep "^."
ls -ltra
Which of the following commands is not a filter?
man
cat
head
pg
Command to kill the last background job?
kill $!
kill -9
kill bg
kill $*
Which command is used to create a new file system in unix?
mkfs
create fs
format fs
Not possible
Which of the following is not a shell variable?
MAIL
PATH
TERM
MESG
Which command kills all processes in your system except the login shell?
kill 0
kill 1
kill $$
How many prompts are available in a UNIX system?
0
1
2
3
How do you find out the number of arguments passed to the shell script?
$*
$@
$#
$?
How do you find out the current directory you’re in?
$dir
pwd
currdir
none
What are the default umask values
000
022
033
222