Linux Exam 1
Which option of rm command is used to remove a directory with all its subdirectories
-r
Which command searches the string in file opened in vi editor?
/ or ?
How to execute ls command inside a vi editor?
:!ls
Syntax of any Unix command is
A
The contents of root filesystem is responsible to
A
The file permission 764 means
Every one can read, group including owner can write, owner alone can execute
Which is the core of the operating system?
Kernal
If a file is removed in Unix using 'rm' then
The File cannot be recovered by a user
Which of the following statement is true?
The mv command will preserve the meta data of the file
To feed standard output of one command to standard input of another in a single shell session
The pipe operator provided by the shell can be used
The loin shell is
The shell program that runs when the user logs in
There are two hard links to the "file1" say hl and h2 and a softlink sl. What happens if we deleted the "file1"?
We will still be able to access the file with hl and h2 but not with sl
When you use the ln command, which of the following occurs?
a file is created that points to an existing file
What is job number?
a unique number, assigned to each job in shell
Superuser can change the _______ permissions of any file.
all of the mentioned
Unix is which kind of Operating System?
all of the mentioned
In vi editor, which command reads the content of another file?
c
Which command changes a file's group owner
chgrp?
Which command is used to change permissions of files and directories?
chmod
Which of these commands will set the permissions on file textfile to read and write for the owner, read for the group, and nothing for everyone else?
chmod 640 textfile
Which command is used to assign read-write permission to the owner?
chmod u=rw file
What command would send the output of cmd1 to the input of cmd2?
cmd1 | cmd2
The shell is?
command interpreter
What command is used to copy files and directories?
cp
Which of these is the correct method for appending "foo" in /tmp/bar file?
echo foo >> /tmp/bar
Operating system kernel must be located in
either / or in /boot
Which command brings a background job into the foreground?
fg
hidden file are
file that begin with a "."
Creation of hardlinks that point across partitions
is not allowed
Which command allows to view the current jobs being handled by the shell?
jobs
Which of these commands could you use to show one page of output at a time?
less
What is the output of the following command for bash shell:
linux bash
Which of the following command output contains userid?
ls -l
How do you get help about the command "cp"?
man cp
In vi editor, the key combination CTRL+f
moves the screen down one page
How do you rename file "new" to file "old"?
mv new old
Which command is used to print a file
none of the mentioned?
Which of the following command can be used to change the user password?
passwd
pwd command displays
present working directory
Which command is used to record a user login session in a file
script
Ctrl-Z key combination
stops the process in the shell
What communication command provides communication to another user logged on by writing to the bottom of their terminal?
talk
A user does a chmod operation on a file. Which of the following is true?
the last change time of the file is updated
Which command creates an empty file if file does not exist?
touch
Which command is used to delete the character before the cursor location in vi editor?
uppercase X
Which one of the following statement is not true?
vi editor commands are not case sensitive
Which vi editor command copies the current line of the file?
yy
* specifies
zero or more characters
Which represents the user home directory
~
