How to know linux os is 32 bit or 64 bit?
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Explain how you would find a specific string in a file.
What are the examples of simple command?
What does chmod 666 do?
I want to see how many interfaces(ethernet cards) are working using single command?
Working in Linux/Unix platform, if any command dose not work, say # ls reports as command not found. what to do?
what is nis server?
What command would you use to create an empty file without opening it to edit it?
What does grep grep do?
What does the ps command do in linux?
What are two subtle differences in using the more and the pg commands?
Explain any one service which are working on udp only?
Please send Security on linux related questions and answers.