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package main
import (
"flag"
"fmt"
"github.com/robfig/cron"
"log"
"os"
"os/exec"
)
func main() {
time_f := flag.String("time", "1m", "Set the time interval.")
cmd_f := flag.String("cmd", "", "Execute the command.")
vars_f := flag.String("vars", "", "Command line options for the programm.")
flag.Parse()
var (
time, cmd, vars string
)
time = fmt.Sprintf("@every %s", *time_f)
cmd = fmt.Sprintf("%s", *cmd_f)
vars = fmt.Sprintf("%s", *vars_f)
cmd, err := exec.LookPath(cmd)
if err != nil {
log.Printf("Executable (%s) neither found in PATH variable nor in working directory.\n", *cmd_f)
os.Exit(1)
}
job := cron.New()
job.AddFunc(time, func() {
if vars == "" {
c := exec.Command(cmd)
o, err := c.Output()
if err != nil {
log.Println(err)
}
fmt.Printf("%s", o)
} else {
c := exec.Command("bash", "-c", cmd+" "+vars)
o, err := c.Output()
if err != nil {
log.Println(err)
}
fmt.Printf("%s", o)
}
})
job.Start()
for {
select {}
}
}
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