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Fix the bad wording around defaults #34

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Thanks to galaktos
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Kevin van Zonneveld 2016-06-22 20:44:15 +02:00
parent 845a9dfb50
commit e0055e5dc1
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README.md
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@ -144,7 +144,7 @@ $ my_script some more args --blah
1. Use `set` rather than relying on a shebang like `#!/usr/bin/env bash -e` as that is neutralized when someone runs your script as `bash yourscript.sh` 1. Use `set` rather than relying on a shebang like `#!/usr/bin/env bash -e` as that is neutralized when someone runs your script as `bash yourscript.sh`
1. Use `#!/usr/bin/env bash` as it is more portable than `#!/bin/bash`. 1. Use `#!/usr/bin/env bash` as it is more portable than `#!/bin/bash`.
1. Use `${BASH_SOURCE[0]}` if you refer to current file even if it is sourced by a parent script. Otherwise use `${0}` 1. Use `${BASH_SOURCE[0]}` if you refer to current file even if it is sourced by a parent script. Otherwise use `${0}`
1. Use `:-` if you want to test variables that could be undeclared. For instance: `if [ "${NAME:-}" = "Kevin" ]` will set `$NAME` to be empty if it's not declared instead of throwing an error. You can also set it to `noname` like so `if [ "${NAME:-noname}" = "Kevin" ]` 1. Use `:-` if you want to test variables that could be undeclared. For instance with `if [ "${NAME:-}" = "Kevin" ]`, `$NAME` will evaluate to `Kevin` if the variable is empty. The variable itself will remain unchanged. The syntax to assign a default value is `${NAME:=Kevin}`.
## Frequently Asked Questions ## Frequently Asked Questions