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operating systems

Linux / Unix AWK: Read a Text File

How do I read a text file using awk pattern scanning and text processing language under Linux / Unix like operating systems?
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Linux / Unix: scp Copy All Hidden Dot Files

I'm using scp command to copy files from one server to another server. The problem is that I'm unable to copy all hidden files (such as .bash_history). How do I copy hidden files using the scp command under Unix like operating systems?
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I'm using ps command to read a snapshot of the current processes under Unix / Linux operating systems. However, ps -e or ps aux only displays command / processes names. I need to see complete information about the process including all parameters passed to it. How do I see it under Unix / Linux using ps command?
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Bash Shell: Find Out If a Variable Is Set or Not

How do I check if a bash shell variable called $input is defined or not under BSD / Apple OS X / Unix / Linux like operating systems?
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OpenBSD: Install Firefox Web Browser

How do I install Mozilla Firefox which is a free and open source web browser under OpenBSD operating systems?
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ifconfig Command Does Not Show IPv4 Address

ifconfig command does not show IP address on my Linux based laptop computer. How do I fix this problem?
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Use export Command in Linux / Unix

How do I use export command under Linux or Unix like operating systems to set variables?
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