bash script shell input

Question

I am currently writing a bash script and when i run the useradd command it requires 2x input. What is the command to input from the bash script into the prompted password fields from useradd?

Daniel C. Sobral · Accepted Answer · 2009-07-21 21:02:05Z

1

If the input is being read from stdin, you could do this;

useradd <<EOF
first input
second input
EOF

Some programs, however, do not read from stdin precisely to stop this kind of thing.

Edit

As remarked upon, this is called a "HERE document", in case you want to look it up.

edited Jul 21, 2009 at 21:02

answered Jul 21, 2009 at 17:18

Daniel C. Sobral

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IRBMe Over a year ago

For the benefit of the author of th question, this is called a 'Here Document', in case you want to look it up.

dfa · Accepted Answer · 2009-07-21 17:26:51Z

1

try using expect:

Expect is a tool for automating interactive applications such as telnet, ftp, passwd, fsck, rlogin, tip, etc

expect works also for programs that do not read from stdin.

answered Jul 21, 2009 at 17:26

dfa

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Daniel C. Sobral Over a year ago

I should have recalled that. I have used except for this precise reasons tons of time.

IRBMe · Accepted Answer · 2009-07-21 17:28:47Z

0

I can't be bothered booting up my Linux system to check, but does the useradd program still prompt if you pass the information on the command line?

useradd -m -p encryptedPassword username

answered Jul 21, 2009 at 17:28

IRBMe

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