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Bash Shell Script To Test For Empty Folder

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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Bash Shell: Check File Exists or Not

How do I test existence of a text file in bash running under Unix like operating systems?
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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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Linux / UNIX: Run Commands When You Log Out

I’ve written a Perl script that connects to our central server for me and it allows me feed data so that I make a timesheet later. How do I run my script when I log out from Apple OS X or Linux / UNIX workstation using bash shell?
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Bash: Continue In a For / While Loop

How do I continue in a for or while loop in Bash under UNIX or Linux operating systems?
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Linux / UNIX: For Loop To Remove Files

How do I use a for loop in Unix to remove files?
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Linux / UNIX: Check If File Is Empty Or Not Using Shell Script

How do I check if a file is empty or not using bash or ksh shell script under a UNIX / Linux / macOS / OS X / BSD family of operating systems? How do I check if a file is empty in Bash?
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