I have a bunch of systems commands which are somwhat similar to appending new content to a file. I wrote a simple script to execute system commands, which works well if there are single words like 'ls' , 'date' etc. But if the command is greater than that, program dies.
The following is the code
package main
import (
"fmt"
"os/exec"
"sync"
)
func exe_cmd(cmd string, wg *sync.WaitGroup) {
fmt.Println(cmd)
c = cmd.Str
out, err := exec.Command(cmd).Output()
if err != nil {
fmt.Println("error occured")
fmt.Printf("%s", err)
}
fmt.Printf("%s", out)
wg.Done()
}
func main() {
wg := new(sync.WaitGroup)
wg.Add(3)
x := []string{"echo newline >> foo.o", "echo newline >> f1.o", "echo newline >> f2.o"}
go exe_cmd(x[0], wg)
go exe_cmd(x[1], wg)
go exe_cmd(x[2], wg)
wg.Wait()
}
The following is the error i see
exec: "echo newline >> foo.o": executable file not found in $PATHexec:
"echo newline >> f2.o": executable file not found in $PATHexec:
"echo newline >> f1.o": executable file not found in $PATH
I guess, this may be due to, not sending cmds and arguments seperately ( http://golang.org/pkg/os/exec/#Command ). I am wondering how to subvert this, since I don't know how many arguments will be there in my command which needs to be executed.
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