Question { 22117 }

In UNIX, what is the command to kill a process?

Answer

Kill -9 or Kill -s Kill
To Kill a process forcibly or definitely kill.

Kill -15 or kill -s term
To terminate a Process.



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Is This Answer Correct ?

7 Yes

1 No

Question { 11165 }

in UNIX,How to copy file into directory?

Answer

cp source destination

Cp path_a.txt Path/




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Question { 13594 }

what is the use of uniq commmand?

Answer

The Uniq command is used to report and Remove repeated line
in a file.
This is a value able tool for a lot of scripting and Testing.
Ex-
$ uniq Duplicate_line No_duplicate_line

If You want to see without repeated lines
Ex-
$ cat repeated_line_file | uniq


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Question { 9337 }

what does the job command do?

Answer

It shows how many process run on background with serial wise
number.


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Question { 47594 }

what is the difference between "cron" command and "at" command?

Answer

Cron: is a daemond process its run periodical.Mince you can
run it in every (sec,min,hour,day,date,Month).We can't
remove a cron job we commenting that only.
here 6 fild to schedule a cron job.

At: only run on particular time specifies by user who
schedule that time you can remove a at job.

Ex:-
$at 9:30
>a.txt
>b.txt
[ctl+d]



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Question { 11164 }

what is the use of nice command?

Answer

For Increase or decrease the priority of a job/Process we
use Nice command,and its range -19 to 20.
If When we need to increase the priority then we need to
decrease the priority number
if Priority of a process 1.

Ex:- Nice -n -10

If we need to decrease the priority then we need to increase
the priority number
if Priority of a process -1.

Ex:- Nice -n 10

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Is This Answer Correct ?

4 Yes

1 No

Question { Infosys, 13189 }

what does a process mean?

Answer

Program under execution is called a process.
Each and every process is all ways identified by a number
called process id or PID.

and

Program not under execution is called a File.


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Question { TCS, 52293 }

how many types of file in unix?

Answer

7 types files are there.

1. Regular file:(-):contains data in either text format or
binary format

2. Directory file:(d):It contains the name and location of
all files stored on a physical device.

3. FIFO file:(f):2 communicate betn 2 processes running on
same system

4. Block special file:(b):Its a physical device such as a
disk, that reads or write data a block at a time.

5. Sybolic file:(l):its a link or pointer to already
existing file

6. Socket file:(s):Is a special file that is used for
network communication.

7. Character special file:(c):A physical device such as
terminal that reads or write one character at a time.

Ex-
stdin, stdout, stderr


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