Unix Interview questions for testers | Interview questions on unix basic commands

Ans: In UNIX system, an external command resides in computer disks. For ex- /bin/ls is an external command. On other hand, internal commands are built into the shell program. For ex- exit is an internal command. ...

286.

Ans: Directory navigation controls are those, which are performed on directories. For ex-

ls- It show the list of directories

Cd- It is used to change directory

Mkdir- It is used to create new directory

Rmdir- It is used to remove directory

Pwd- it is used to show the path of current directory, where the user is exists.

What Are Directory Navigation Tools And Their Controls?

Date Posted: 07/01/2012

Ans: Directory navigation controls are those, which are performed on directories. For ex- ls- It show the list of directories Cd- It is used to change directory Mkdir- It is used to create new directory Rmdir- It i...

287.

Ans: At any time user can determine where he is in file system hierarchy

With Pwd command, (present working directory).

For ex- % Pwd

Output- /home/frank/src

How Does The User Know Where He Is In File System?

Date Posted: 07/01/2012

Ans: At any time user can determine where he is in file system hierarchy With Pwd command, (present working directory). For ex- % Pwd Output- /home/frank/src ...

288.

Ans: 'cd' command is basically used for change directory.

The various use of ‘cd’ command are:

Cd (also chdir in some shells) --> change directory

Cd/ -->changes directory to the system's root

Cd... -->goes up one directory level

Cd. /. -->goes up two directory levels

Cd /full/path/name/from/root --> changes directory to absolute path named (note the leading slash)

Cd path/from/current/location --> changes directory to path relative to current location (no leading slash)

Cd ~username/directory --> changes directory to the named username's indicated directory

What Is Use Of 'cd' Command?

Date Posted: 07/01/2012

Ans: 'cd' command is basically used for change directory. The various use of ‘cd’ command are: Cd (also chdir in some shells) --> change directory Cd/ -->changes directory to the system's root ...

289.

Ans: ‘rmdir’ command is use to remove directory. It is compulsory that the directory

needs to be empty before remove it and if it is also not present working directory,

Then you must first change of it.

Syntax- rmdir

Ex- To remove the empty directory /home/frank/data while in /home/frank use:

% rmdir data

% rmdir /home/frank/data

What Is The Use Of ‘rmdir’ Command?

Date Posted: 07/01/2012

Ans: ‘rmdir’ command is use to remove directory. It is compulsory that the directory needs to be empty before remove it and if it is also not present working directory, Then you must first change of it. Syntax- rmdir E...

290. What Is The Use Of 'mkdir' Command?

Date Posted: 07/01/2012

Ans: ‘mkdir’ command is use to create directory.

Syntax- mkdir [option]

Common option

-p create parent directory

-m access permission

Ex- % mkdir /home/frank/data

Or if your present working directory is /home/frank then

% mkdir data