Which of the following commands is used to obtain a list of all files by modification time?
1. ls -1
2. ls -t
3. ls -i
4. ls -R
Which of the following is not a communication command.
1.write
2.mesg
3.mail
4.grep
While working with mail command, which command is used to save mail in a separate file?
1.s
2.r
3.w
4.d
If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use
1.tty ^c
2.stty intr ^c
3. stty echoe
4.stty echo ^a
The second set of the three permissions (r-) indicates that
1.group has read permission only
2.other has read permission only
3.owner has read permission only
4.group has write permission only
Which command is used to remove a file?
1.remove
2.rm
3.mv
4.del
Which command is used to remove the read permission of the file 'note' from both the group and others?
1.chmod go+r note
2. chmod go+rw note
3.chmod go-x note
4.chmod go-r note
Which command will be used with vi editor to insert text to left of cursor?
1.s
2.S
3.a
4.i
Which of the following command addresses all users who are currently hooked on?
1.write
2.mail
3.wall
4.mesg
Which of the following files will displayed by this command cat *ch*
1.patch
2.catch
3..ch
4.All of the above
Which of the following keys is used to replace a single character with new text?
1.sort
2.s
3.r
4.C
In vi editor, forward search is performed using the command.
1.:pat
2.?pat
3./pat
4.All of the above
Which symbol will be used with grep command to match the pattern pat at the beginning of a line?
1.^pat
2.$pat
3.pat$
4.pat^
The % key allows you
1. to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
2.to move the cursor to the upperleft corner of the screen
3. to move the cursor backward to the beginning of a word
4.to move the cursor to the first column in the current line
The agency that sits between the user and the UNIX system is called the
1.logic
2.profile
3.shell
4.erxc
The command used to compare the files is known as
1.comp
2.cmp
3.do
4.ccp
The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
1.tee
2.tr
3.sort
4.grep
The cp command uses:
1.standard input file
2.standard output file
3.both input and output file
4.neither standard input nor standard output file
The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is:
1.0
2.755
3.744
4.555
TWhich of the following commands is used to display your working directory?
1.dir
2.prompt $p$g
3.pwd
4.path
Which column contains all details of the permissions of a file when you issue the ls -l command?
1.second
2.fourth
3.third
4.first
Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3?
1.chmod u+x emp[1-3]
2.chmod 777 emp*
3.chmod u+r ??? emp
4.chmod 222 emp?
Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?
1.cat emp[!0-9]
2. more [emp][!0-9]
3.cat emp[x-z]
4.cat emp[a-z]
Which command is used to copy all files having the string chap and any two characters after that to the progs directory?
1.cp chap?? progs
2.cp chap* progs
3.cp chap[12] /progs/*.*
4.cp chap?? /progs/*
Which command is used to count just the number of characters in a file?
1.wc - 1
2. wc -c
3. wc -w
4. wc -r
Which command is used to display a file contents in octal form?
1.cd
2.od
3.of
4.oct
Which command is used to display and create files?
1.cat
2.vi
3.ed
4.lyrix
Which command is used to display the characteristics of a process?
1.pid
2.du
3.ps
4.au
Which command is used to display the top of the file?
1.cat
2.head
3.more
4.grep
Which command is used to extract specific columns from the file?
1.cat
2.cut
3.grep
4.paste
Which command is used to make all files and sub-directories in the directory (progs) executable by all users?
1.chmod -R a+x progs
2.chmod -R 222 progs
3.chmod -1 a+x progs
4.chmod -x a+x progs
Which command is used to remove a directory?
1.rd
2.rmdir
3.dldir
4.rdir
Which command is used to sort the
1.sort
2.sh
3.st
4.sort -r
Which command is used to terminate a process?
1.shutdown
2.haltsys
3.cancel
4.kill
Which command sends the word count of the file infile to the newfile.
1.wc infile >newfile
2.wc <infile >newfile
3. wc infile - newfile
4. wc infile | newfile
Which of the following commands is used to display the directory attributes rather than its contents?
1. ls -l -d
2.ls -l
3.ls -x
4. ls -F
Which of the following commands is used to identify the type of file by context?
1.Is
2.cat
3.file
4.more
Which of the following commands is used to list contents of directories?
1.ls
2.lp
3.dir
4.tar
Which of the following commands is used to update access and modification times of a file?
1.grep
2.wc
3.touch
4.cat
Which of the following directories contain all the Alias created by a user, including his login
1./tmp
2./etc
3./usr
4./dev
Which of the following keys is used to move the cursor to the end of the paragraph.
1.}
2.{
3.|
4.$
Which of the following special shell variables is used to process number of the last background job?
1.$!
2.$#
3.$0
4.$*
Which option will be used with touch command to change the access time?
1.a
2.b
3.t
4.h
Which symbol is used to separate more than one command in the same command line?
1.$
2.#
3.:
4.;