A shell parser and formatter. Supports POSIX Shell and Bash.

Still in active development, so the API might change a little.

shfmt formats shell programs. It can use tabs or any number of spaces to indent. See canonical.sh for a quick look at its style.

go get github.com/mvdan/sh/cmd/shfmt 

You can feed it standard input, any number of files or any number of directories to recurse into. When recursing, it will operate on .sh and .bash files and ignore files starting with a period. It will also operate on files with no extension and a shell shebang.

shfmt -l -w script.sh 

Use -i N to indent with a number of spaces instead of tabs.