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From: Christopher on 31 Mar 2008 14:48
I am trying to automate the following task from the command line:

# ./<executable name>
# exectuable prompts for input "Gimmie a value"
# I type <input> and hit enter
# executable prompts for input "Gimmie another"
# I type <input2> and hit enter
# executable exits

I know how to pass arguments, but I do not know how to automate input
after prompts. Can anyone help out?

I was told to look up "Expect", but my environment doesn't seem to
have it and I cannot alter it, as it is provided to me by my employer.

From: OldSchool on 31 Mar 2008 16:09
On Mar 31, 2:48 pm, Christopher <cp...(a)austin.rr.com> wrote:
> I am trying to automate the following task from the command line:
>
> # ./<executable name>
> # exectuable prompts for input "Gimmie a value"
> # I type <input> and hit enter
> # executable prompts for input "Gimmie another"
> # I type <input2> and hit enter
> # executable exits
>
> I know how to pass arguments, but I do not know how to automate input
> after prompts. Can anyone help out?
>
> I was told to look up "Expect", but my environment doesn't seem to
> have it and I cannot alter it, as it is provided to me by my employer.

Take a look at "here-docs"

./your_exec <<eof_mark
input1
input2
eof_mark

should be in the man page for your shell

From: mop2 on 31 Mar 2008 16:26

# Perhaps a way:

$ cat s
read -p a: a
read -p b: b

$ ./s
a:1
b:2
=1=2=

$ echo -e '3\n4'|./s
=3=4=

From: h.stroph on 31 Mar 2008 18:11
In news:738ba08b-e693-44dd-8feb-201406595935(a)x41g2000hsb.googlegroups.com,
Christopher <cpisz(a)austin.rr.com> typed:

> # ./<executable name>
> # exectuable prompts for input "Gimmie a value"
> # I type <input> and hit enter
> # executable prompts for input "Gimmie another"
> # I type <input2> and hit enter
> # executable exits
>
> I know how to pass arguments, but I do not know how to automate input
> after prompts. Can anyone help out?

In addition to the "here" document that another suggested, you can:

echo -e "input\ninput2\n" | ./executable name

You should learn that the < > # you're in the habit of using have particular
meaning to the shell and should be avoiding in the interests of clear
communication, unless you intend them to have such meaning.


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