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Use a variable in a 'for' loop
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How to use global arrays in bash?
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How to use variables in sed command
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How do I read a variable from a file?
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bash variables in for loop range
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Read from file into variable - Bash Script take2
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How to use variables inside single quotes
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Awk: extract different columns from many different files
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Why isn't this awk command doing a full outer join?
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How to use a variable inside a regular expression?
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How do I use variables in a sed command?
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How do I set a variable to the output of a command in Bash?
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Variable Syntax Error with Bash Script (Homework)