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bash for loop

How can I iterate bash for loop using a variable range of numbers in Unix or Linux or BSD or Apple OS X operating systems?
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Linux / UNIX: Bash Loop Forever

I need to cycles through a loop forever using for or while syntax. How do I set such loop under UNIX or Linux operating systems?
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Bash Iterate Array Examples

How do I iterate through an array under Bash scripting?
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How do I use bash for loop to iterate thought array values under UNIX / Linux operating systems?
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Bash For Loop Spaces

How do I use bash for loop with spaces in a file name on Unix or Linux operating system? The following code fails with errors:

#!/bin/bash
files=$(ls *.txt)
dest="/nas/server/dest"
for f in $files
do
cp "$f" $dest
done

How do I fix this problem on bash shell?
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Linux bash for loop

Q. How do I use bash for loop under Linux operating systems?
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