Builtin Commands

There are a bunch of commands built into the language. meaning that they are not external programs in the system. Thry are implemented internally in bunster.

true false shift loadenv embed cd pwd

true

Exits with zero.

false

Exits with non-zero exit code. (1).

shift

Used to shift the positional arguments to left by N. if no arguments passed, then N is 1. if an argument is passed. it should be an integer. and in that case N is the first argument.

For example, calling shift with no arguments causes $1 to become $2, $2 to become $3, $3 to become $4 and so on. If an argument is passed. for example 3. The arguments are shifted by 3 steps. $1 becomes $4, $2 becomes $5, $3 becomes $6 and so on

loadenv

Used to deal with .env files. more information about it in Environment Files section

embed

Used to access embedded files. more information about it in Embedding section

cd

Change the current working directory to the path supplied at first argument. for example cd /tmp changes current diretory to /tmp. if no arguments are supplied. the value of $HOME variable is used.

The exit status is zero unless there was an error changing directory.

pwd

Prints the absolute path of current working directory.