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edited Jun 14, 2014 at 23:17

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Use redirection, command substitution, and parameter expansion. Double quotes are needed to preserve whitespace and special characters. The trailing x saves the trailing whitespacenewlines which would be otherwise removed in the command substitution.

#!/bin/bash
echo "$var"x > file
unset var
var="$(< file)"
var=${var%x}

Use redirection, command substitution, and parameter expansion. Double quotes are needed to preserve whitespace and special characters. The trailing x saves the trailing whitespace which would be otherwise removed in the command substitution.

#!/bin/bash
echo "$var"x > file
unset var
var="$(< file)"
var=${var%x}

Use redirection, command substitution, and parameter expansion. Double quotes are needed to preserve whitespace and special characters. The trailing x saves the trailing newlines which would be otherwise removed in the command substitution.

#!/bin/bash
echo "$var"x > file
unset var
var="$(< file)"
var=${var%x}

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answered Jun 14, 2014 at 11:41

choroba

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Use redirection, command substitution, and parameter expansion. Double quotes are needed to preserve whitespace and special characters. The trailing x saves the trailing whitespace which would be otherwise removed in the command substitution.

#!/bin/bash
echo "$var"x > file
unset var
var="$(< file)"
var=${var%x}