command_available(name: &str) -> Result<bool>

Check if a given command is available

env(name: &str, def: &str) -> Result<String>

Read an environment variable, or return the given default

path_exists(p: &str) -> Result<bool>

Check if something exists at a given path

path_is_dir(p: &str) -> Result<bool>

Check if the given path is a directory

path_is_file(p: &str) -> Result<bool>

Check if the given path is a file

read_dir(p: &str) -> Result<Vec<String>>

Read the children of a given dir

read_file(p: &str) -> Result<String>

Read the contents of a given file