What command is used to replace the existing string with some other?

TCS,

What Command is used to make a directory?

IBM,

Give Command that will move a single file called "unix.txt"

IBM,

Give command that will make the file "run.sh" executable?

IBM,

Give Command that will change the name of a directly from paypal to eBay

Alcatel, IBM,

How does a user get the current date, time in UNIX?

IBM,

What Command will remove a Directory in UNIX?

IBM,

How does the user view the contents of a text file in UNIX?

IBM,

What command will bring user back to their home directory in UNIX?

IBM, Wipro,

What command a user use to view a long text file one page at a time in UNIX?

IBM,

What command would users use to see what file one page at a time in UNIX?

IBM,

fork in unix ?

BFL,

in unix echo is used for

BFL, BirlaSoft, Patni,

The command grep first second third /usr/you/myfile a) prints lines containing the words first, second or third from the file /usr/you/myfile b) searches for lines containing the pattern first in the files second, third, and /usr/you/myfile and prints them c) searches the files /usr/you/myfiel and third for lines containing the words first or second and prints them d) replaces the word first with the word second in the files third and /usr/you/myfile e) None of the above

IBM,

what is the command to list files in a directory in UNIX?