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syntax fix

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edited Jan 26, 2010 at 13:52

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-z is a the best way.

Another options I've used is to set a variable, but it can be overridden by another variable eg

export PORT=${MY_PORT:-5432}

If the $MY_PORT variable is empty, then PORT gets set to 5432, otherwise PORT is set to the value of MY_PORT` gets set to 5432, otherwise PORT is set to the value of MY_PORT. Note the syntax include the colon and dash.

-z is a the best way.

Another options I've used is to set a variable, but it can be overridden by another variable eg

export PORT=${MY_PORT:-5432}

If the $MY_PORT variable is empty, then PORT gets set to 5432, otherwise PORT is set to the value of MY_PORT`. Note the syntax include the colon and dash.

-z is a the best way.

Another options I've used is to set a variable, but it can be overridden by another variable eg

export PORT=${MY_PORT:-5432}

If the $MY_PORT variable is empty, then PORT gets set to 5432, otherwise PORT is set to the value of MY_PORT. Note the syntax include the colon and dash.

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created Jun 11, 2009 at 13:19

Amandasaurus

32.6k
70
199
270

-z is a the best way.

Another options I've used is to set a variable, but it can be overridden by another variable eg

export PORT=${MY_PORT:-5432}

If the $MY_PORT variable is empty, then PORT gets set to 5432, otherwise PORT is set to the value of MY_PORT`. Note the syntax include the colon and dash.