WPF

Why we use the exec command?
1. executes the output of command as a regular shell command
2. causes the shell's image to be replaced with command in the process' memory space.
3. causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost.
4. none

causes the shell's image to be replaced with command in the process' memory space.

More interview questions and answers
Who developed the Linux ? 1. charls babbage 2. Linus Torvalds 3. Alan Turing 4. none
Linus Torvalds
what is knoppix ? 1. CD version of the Linux 2. Version of the Linux 3. properties of linux 4. none
CD version of the Linux
What terminology is not used in the Linux ? 1. Shell 2. Process 3. File 4. Folder
Folder
What do you mean by Linux utilities ? 1. System software 2. application software 3. Both 4. none
System software
Why we use the Shell? 1. communication media between user and Linux OS 2. communication media between user and Hardware 3. communication media between user and Application 4. none
communication media between user and Linux OS
What is the System Call in linux? 1. Function 2. predefined function 3. properties 4. none
predefined function
How many types of the shell in Linux ? 1. one 2. two 3. three 4. four
Three Three types of shell in Linux are: Bourne again shell(bash), korn shell(ksh), c shell(csh).
Why we use this ps command in linux? 1. generates a list of processes and their attributes 2. generates a list of Action and their attributes 3. generates a list of processer and their attributes 4. none
generates a list of processes and their attributes
Why we use the kill command? 1. stop process 2. terminate the process 3. wait the process 4. none
Terminate the process
Why we use the Wait command? 1. wait for one processes to terminate 2. wait for one of its child processes to terminate 3. wait for one of its child processes to start 4. none
wait for one of its child processes to terminate
Why we use the eval command? 1. executes the output of command as a regular shell command 2. causes the shell's image to be replaced with command in the process' memory space. 3. causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost. 4. none
executes the output of command as a regular shell command
Why we use the exec command? 1. executes the output of command as a regular shell command 2. causes the shell's image to be replaced with command in the process' memory space. 3. causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost. 4. none
causes the shell's image to be replaced with command in the process' memory space.
Why we use the shift command? 1. executes the output of command as a regular shell command 2. causes the shell's image to be replaced with command in the process' memory space. 3. causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost. 4. none
causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost.
Why we use the umask command?1. sets the shell's umask value to the specified octal number, or displays the current umask value if the argument is omitted2. causes the shell\'s image to be replaced with command in the process\' memory space.3. causes all of the positional parameters $2..$n to be renamed $1..$(n-1), and $1 to be lost.4. none
sets the shell's umask value to the specified octal number, or displays the current umask value if the argument is omitted
which facilities are provided by the kernel ? 1. memory management 2. process management 3. interprocess communication (IPC) 4. all
all
what are the tasks not done by system administrator ? 1. starting and stopping Linux 2. maintaining the file system 3. maintaining the user a/cs 4. Compilation of program
Compilation of program
what does the trap command do ? 1. specify the time of execution of any command 2. specify the command 3. specify the time 4. none
specify the time of execution of any command
can functions be exported to subshells ? 1. True 2. False
True
what does the cd commands do ? 1. use for enter the directory 2. use for change the directory 3. use for create the directory 4. none
use for enter the directory
why we use passwd command? 1. create password 2. change password 3. find password 4. none
change password