Which is the inner most layer in unix operating system
Hardware
Kernel
Shell
Application Programs
Which command is used to modify the modification time and access times of a file
modify
touch
cat
Not possible
Which command is used to create a zero size file?
create
new
Which command gives the time of last inode modification?
ls -i
ls -l
ls -li
ls-lc
Which command can be used to view the current users login name?
logname
who
whos
ps
UNIX is a single user operating environment
True
False
Whats the command used when the terminal settings are disrupted and we see garbage in our terminal
stty -d
tput clear
stty sane
stty clear
Which of the following commands can compress a file and as well as archive it?
tar
gzip
xr
zip
Which environment variable can be used to change the shell prompt?
TERM
PROMPT
PS1
PS2
Unix treats the main memory(RAM) of a PC as a file.