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how many internal commands is there in UNIX?
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What is FIND, GREP and SED ? Could you please give me the difference between all the three? Where we use this commnands?
can we use cat command as an editor ..???
distinguish between user mode and kernel mode?
How to replace the exact word in vi editor?? suppose a file contains words like amaze,amazed,amazement in some of the line.But i want to replace only 'amaze' with delight but don't wanna replace amazed or amazement. thanks
6 Answers Polaris, Tech Mahindra,
What is ‘ps’ command for?
How do you find files in Unix?
What is the nmap command?
What is grep short for?
How can you copy files or directories?
Who command in unix operating system?
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
what does a process mean?
Unix Commands 
