Just Scripts
By adding a shebang line to the top of a justfile and making it executable,
just can be used as an interpreter for scripts:
$ cat > script <<EOF
#!/usr/bin/env just --justfile
foo:
echo foo
EOF
$ chmod +x script
$ ./script foo
echo foo
foo
When a script with a shebang is executed, the system supplies the path to the
script as an argument to the command in the shebang. So, with a shebang of
#!/usr/bin/env just --justfile, the command will be /usr/bin/env just --justfile PATH_TO_SCRIPT.
With the above shebang, just will change its working directory to the
location of the script. If you’d rather leave the working directory unchanged,
use #!/usr/bin/env just --working-directory . --justfile.
Note: Shebang line splitting is not consistent across operating systems. The
previous examples have only been tested on macOS. On Linux, you may need to
pass the -S flag to env:
#!/usr/bin/env -S just --justfile
default:
echo foo