| 1 | #!/usr/bin/env bash |
| 2 | |
| 3 | USAGE="usage: ./process-pid.sh {[-h, -a], [-f, -e] <pid>}, -s <regexp>" |
| 4 | |
| 5 | # -h case |
| 6 | if [[ "$1" -eq "-h" ]]; then |
| 7 | echo "$USAGE"; exit 0 |
| 8 | |
| 9 | # <pid> case |
| 10 | elif [[ "$1" =~ ^-?[0-9]+$ ]]; then |
| 11 | if `ps $1 > /dev/null 2>&1`; then |
| 12 | echo "you win!"; exit 0 |
| 13 | |
| 14 | else |
| 15 | echo -ne "invalid pid\n$USAGE"; exit 1 |
| 16 | fi |
| 17 | |
| 18 | # -e <pid> case |
| 19 | elif [[ "$1" -eq "-e" && "$2" =~ ^-?[0-9]+$ ]]; then |
| 20 | if `ps $2 > /dev/null 2>&1`; then |
| 21 | echo "you win!"; exit 0; |
| 22 | |
| 23 | else |
| 24 | echo -ne "invalid pid\n$USAGE"; exit 1 |
| 25 | |
| 26 | # -s <pid> <regex> case |
| 27 | elif [[ "$1" -eq "-s" && "$2" =~ ^-?[0-9]+$ ]]; then |
| 28 | if `ps $2 > /dev/null 2>&1`; then |
| 29 | echo "you win!"; exit 0; |
| 30 | |
| 31 | else |
| 32 | echo -ne "invalid pid\n$USAGE"; exit 1 |
| 33 | |
| 34 | else |
| 35 | echo "$USAGE"; exit 1 |
| 36 | fi |