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INTERVIEW QUESTIONS OPERATING SYSTEMS UNIX COMMANDS DETAILS
Question :

Explain the following commands.

Category Unix Commands Interview Questions
Rating (2.7) By 13 users
Added on 10/25/2009
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Answers:

Source: CoolInterview.com

$ ls > file1
$ banner hi-fi > message
$ cat par.3 par.4 par.5 >> report
$ cat file1>file1
$ date ; who
$ date ; who > logfile
$ (date ; who) > logfile
Source: CoolInterview.com



Source: CoolInterview.com

$ ls > file1 -> output of ls is redirected to file file1
$ banner hi-fi > message -> the banner pattern of "hi-fi" redirected to file message
$ cat par.3 par.4 par.5 >> report -> contents of files par.2 par.4 par.5 appended to file report
$ cat file1>file1 -> file emptied
$ date ; who -> shows date and then who-all-logged-in
$ date ; who > logfile -> shows date and output of who-all-logged-in redirected to file logfile
$ (date ; who) > logfile -> output of date and who-all-logged-in redirected to file logfile
Source: CoolInterview.com



Posted by: Gururaj

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