Answer / sumesh

hexdump file1 > file2

someone already asked 'what is diff between unix & Linux' can I ask the same but more nuanced...I have 7 years app support of unix, have never seen Linux BUT need to bluff my way through in an interview i e say that I have use Linux. What are the most important things I need to know?

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How to Trouble shoot performance issue in RHEL administration ? please give to one example

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Give a Linux shell command to find all files in a directory which contain ip addresses.

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How to apply patch for multiple servers .

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how u use the iptable firewall to restrict ssh,telnet,ftp

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You want to create a compressed backup of the users' home directories. What utility should you use?

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