What command is used to count just the number of lines contained in a file ?

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Which of the following commands can be used to get information about all users who are currently logged into the system ?

A. which B. who C. who am i D. 1 /u...

The special shell variable $* is used________________?

A. to exit status of ast command executed. B. to process number of the current shell C. to list the positional parameters D. to name the command being executed...

Which command sends the word count of the file infile to the newfile_______________?

A. wc infile >newfile B. wc newfile C. wc infile – newfile D. wc infile | newfile...

Which command is used to display the characteristics of a process ?

A. pid B. du C. ps D. au...

Which command is used to list all the files with extension .lst ?

A. ls -l *.lst B. ls lst* C. ls *.* D. ls *[lst]...