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what are the latest versions of MSDOS?
what are the latest versions of dos?how does it help in booting the system?what are commands used?
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How does virus affects computer ?
Explain about Unix and Windows Virus details
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What is the use of the command "ls -x chapter[1-5]"?
ls stands for list; so it displays the list of the files that starts with 'chapter' with suffix '1' to '5', chapter1, chapter2, and so on.
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What are shell variables?
Shell variables are special variables, a name-value pair created and maintained by the shell. Example: PATH, HOME, MAIL and TERM