Home / cs-notes / Language / Shell / Arguments
| variable | meaning |
|---|---|
| $0 | the script file name |
| $n | the nth arg |
| $# | length of args |
| $* | ”$*”: all args as one arg |
| $@ | ”$@”: all args as mutiple args |
| $? | exit status code of previous command |
| $$ | current process id |