| #!/bin/sh | |
| # Returns 0 (success) if the given program is runnable. | |
| # | |
| # This is better than using [ -x /usr/bin/program ] because it avoids | |
| # the need to hardcode the program's path; it searches $PATH instead. | |
| # | |
| if [ $# != 1 ]; then | |
| echo "usage: $0 <programname>" >&2 | |
| exit 1 | |
| fi | |
| type "$1" >/dev/null 2>&1 |