9

I am running the dup1 example from The Go Programming Language book (related code shown below):

for input.Scan() {
    counts[input.Text()]++
}

After typing some lines of text, I want to terminate the Scan() method. I've tried Ctrl+D, Ctrl+Z and many other key combinations without luck. Only Ctrl+C works but that also terminates the program.

How can I terminate the Scan() from terminal without exiting the program?

I am developing on Windows 7 using os.Stdin.

[Edit]

Ctrl+Z doesn't work:

Thanks. But that doesn't work for me:

C:\prj\src\gopl\>go run dup1.go
I have tried all these combinations from the terminal
^Z
^X
^V
^B
^N

^A
^D
^F
^G

^K
^L
^Q
^W
^E
^R
^T
^Y
^U
^O
^P
2(Notes: only Ctrl + C works here)

C:\prj\src\gopl\>

If I run this program in Ubuntu, only Ctrl + D works, Ctrl + Z will Stop the program and Ctrl + C will terminate it.

Andrew Guo
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  • Under Windows the `EOF` is mapped Ctrl+Z as far as I know. Maybe your terminal remap it to something else, check out its configuration. – Elwinar Mar 02 '16 at 17:55
  • Are you sure you're typing Ctrl+Z at the *beginning of a new line*? That may be required for Scan to actually receive EOF. – LemurFromTheId Mar 02 '16 at 17:58

3 Answers3

10

No one asked but I had this problem in OSX and this came up in a search. Mac OSX terminals recognize EOF when control-D is pressed at the beginning of a line.

Tony Antoniani
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4

ctrl + shift + d will send EOF to the terminal if it's the first character in a new line.

go run main.go

> line one
> another line
> another line
> ctrl + shift + d

And you should see the output 

2 another line

As described in this comment https://stackoverflow.com/a/21658005/1522019 .
You can use stty all to find EOF combination. I kept doing ctrl + d which in my mind is the same as ctrl + D.

alucic
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1

For Windows, on a new line,

<Ctrl+Z><Enter>
peterSO
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