()
| 17 | ) |
| 18 | |
| 19 | func main() { |
| 20 | |
| 21 | // For our example we'll exec `ls`. Go requires an |
| 22 | // absolute path to the binary we want to execute, so |
| 23 | // we'll use `exec.LookPath` to find it (probably |
| 24 | // `/bin/ls`). |
| 25 | binary, lookErr := exec.LookPath("ls") |
| 26 | if lookErr != nil { |
| 27 | panic(lookErr) |
| 28 | } |
| 29 | |
| 30 | // `Exec` requires arguments in slice form (as |
| 31 | // opposed to one big string). We'll give `ls` a few |
| 32 | // common arguments. Note that the first argument should |
| 33 | // be the program name. |
| 34 | args := []string{"ls", "-a", "-l", "-h"} |
| 35 | |
| 36 | // `Exec` also needs a set of [environment variables](environment-variables) |
| 37 | // to use. Here we just provide our current |
| 38 | // environment. |
| 39 | env := os.Environ() |
| 40 | |
| 41 | // Here's the actual `syscall.Exec` call. If this call is |
| 42 | // successful, the execution of our process will end |
| 43 | // here and be replaced by the `/bin/ls -a -l -h` |
| 44 | // process. If there is an error we'll get a return |
| 45 | // value. |
| 46 | execErr := syscall.Exec(binary, args, env) |
| 47 | if execErr != nil { |
| 48 | panic(execErr) |
| 49 | } |
| 50 | } |
nothing calls this directly
no outgoing calls
no test coverage detected