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Using sed to search and replace an ip address in a file
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Unix command sed replace in a variable
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Using shell variables for command options
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Replace a string in a text file using a shell script not working properly
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How to use a variable's value as another variable's name in bash
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How can I use $variable in a shell brace expansion of a sequence?
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How to pass argument to script which is input to bash
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How can I use a variable in the replacement side of the Perl substitution operator?
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How to send variable to an inline shell-script?
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Are there naming conventions for variables in shell scripts?
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Use variable inside bash brace expansion
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In a bash shell script, writing a for loop that iterates over string values
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How to assign a heredoc value to a variable in Bash?
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How do I set a variable to the output of a command in Bash?
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Redirecting output to a variable?
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Use shell variable inside a pattern in awk
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How can I declare and use Boolean variables in a shell script?