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November 9, 2015 16:10
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Poor man's bash template
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| _fill_in() { | |
| perl -p -e 's/\$\{([^}]+)\}/defined $ENV{$1} ? $ENV{$1} : "\${$1}"/eg' "${1}" | |
| } | |
| # usage | |
| export MY_VAR=15 | |
| _fill_in "my_file.tmpl" > "my_file" |
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