Created
October 23, 2011 07:28
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Shell script programming practices
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| # if else then in one line | |
| [ $condition ] && echo 'true' || echo 'false' | |
| # if argument empty then | |
| local arg | |
| echo ${arg:-default_value} # => default_value | |
| arg=present | |
| echo ${arg:-default_value} # => present | |
| # if argument not empty then replace the text | |
| # note that no regular expression could be applied | |
| echo ${arg//t/t?} # => present? |
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