How do I check if a directory contains files? How do I find out if a directory contains files using bash shell under Linux or Unix like operating systems?
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I‘m using GeSHi under php to highlight a source code. How do I turn on or off line numbers using GeSHi?
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How do I set or create variables within my shell script or at command line under Linux and Unix like operating systems?
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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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I am new to Linux and command line. How do I move a directory under Linux operating systems?
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I need to create a log file using the following format:

myapp_monday.log
myapp_tuesday.log
….
…
myapp_sunday.log

How do I create log filename with day of the week in it under Linux or Unix operating systems?
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