Unable to run an Ubuntu command

[jose]

Hi all,

For some reason I’m unable to run this code:

fmt.Println("\nChecking if protected-mode is on each .conf file...")
protectedModeStatusByte, _ := exec.Command("sudo", "grep", "^protected-mode", "/etc/redis/*.conf", "|", "wc", "-l").Output()
protectedModeStatus := string(protectedModeStatusByte[:])
fmt.Println(protectedModeStatus)
fmt.Printf("\nprotected-mode Status: %s", protectedModeStatus)

the output is empty:

Checking if protected-mode is on each .conf files...


protected-mode Status: 

The funny thing is I do have a similar code for another linux command on the same .go file and it’s running perfectly! It doesn’t make any sense!

Txs!

[jabbson (Karl Benedict)]

Does this another linux command also pipes the output of one command into another?

[jose]

Thanks jabbson for answering.
I’m just trying to run the simple linux grep command from a .go script and seems to be impossible…

if I run the command on linux I’ve got:
NS-000498:$ sudo grep ^protected-mode /etc/redis/*.conf | wc -l
5
I just want to get that “5” for later analysis inside the .go script.
Makes sense?

[jabbson (Karl Benedict)]

	wc := exec.Command("wc", "-l")
	grep := exec.Command("sudo", "grep", "^protected-mode", "/etc/redis/*.conf")

	pipe, _ := grep.StdoutPipe()
	defer pipe.Close()

	wc.Stdin = pipe
	grep.Start()

	res, _ := wc.Output()
	fmt.Println(string(res))

[jabbson (Karl Benedict)]

or

output, _ := exec.Command("sh", "-c", "sudo grep ^protected-mode /etc/redis/*.conf | wc -l").Output()
fmt.Println(string(output))

[jose]

OMG!! I swear to god that I’ve tried that one before! ;-(
The first solution returned 0. But the second one worked! It’ s not a good day for coding…

Many thanks for your help!