docs: update
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1 changed files with 12 additions and 10 deletions
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@ -41,6 +41,8 @@ request on the repo and our Travis.ci hook will run ShellCheck for you.
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## No no's
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## No no's
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- Don’t use `echo`.
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- Use `printf "%s\n"`
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- Don’t use `bc`.
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- Don’t use `bc`.
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- Don’t use `sed`.
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- Don’t use `sed`.
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- Use `bash`'s built-in [parameter expansion](http://wiki.bash-hackers.org/syntax/pe).
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- Use `bash`'s built-in [parameter expansion](http://wiki.bash-hackers.org/syntax/pe).
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@ -52,21 +54,21 @@ request on the repo and our Travis.ci hook will run ShellCheck for you.
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## If Statements
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## If Statements
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If the test only has one command inside of it; use the compact `if`
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If the test only has one command inside of it; use the compact test
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syntax. Otherwise the normal `if`/`fi` is just fine.
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syntax. Otherwise the normal `if`/`fi` is just fine.
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```sh
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```sh
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# Bad
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# Bad
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if [[ "$var" ]]; then
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if [[ "$var" ]]; then
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echo "$var"
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printf "%s\n" "$var"
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fi
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fi
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# Good
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# Good
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[[ "$var" ]] && echo "$var"
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[[ "$var" ]] && printf "%s\n" "$var"
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# Also good (Use this for longer lines).
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# Also good (Use this for longer lines).
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[[ "$var" ]] && \
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[[ "$var" ]] && \
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echo "$var"
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printf "%s\n" "$var"
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```
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```
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@ -77,16 +79,16 @@ Case statements need to be formatted in a specific way.
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```sh
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```sh
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# Good example (Notice the indentation).
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# Good example (Notice the indentation).
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case "$var" in
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case "$var" in
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1) echo 1 ;;
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1) printf "%s\n" 1 ;;
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2)
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2)
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echo 1
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printf "%s\n" "1"
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echo 2
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printf "%s\n" "2"
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;;
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;;
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*)
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*)
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echo 1
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printf "%s\n" "1"
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echo 2
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printf "%s\n" "2"
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echo 3
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printf "%s\n" "3"
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;;
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;;
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esac
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esac
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```
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```
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