I am trying to write a script that pulls the latest version of my software from a Git repository and updates the configuration files. When pulling from the repository though, I have to enter a password. I want the script to automate everything, so I need it to automatically fill it in for me. I found this site that explained how to use Expect to look for the password prompt and send the password. I can't get it to work though.
Here's my script:
#!/usr/bin/expect -f
set password [lrange $argv 0 0]
set timeout -1
clear
echo "Updating Source..."
cd sourcedest
git pull -f origin master
match_max 100000
# Look for passwod prompt
expect "*?assword:*"
# Send password aka $password
send -- "$password\r"
# send blank line (\r) to make sure we get back to gui
send -- "\r"
expect eof
git checkout -f master
cp Config/database.php.bak Config/database.php
cp webroot/index.php.bak webroot/index.php
cp webroot/js/config.js.bak webroot/js/config.js
What am I doing wrong?
Here's the site I got it from: http://bash.cyberciti.biz/security/expect-ssh-login-script/
This is pretty much taken from the comments, with a few observations of my own. But nobody seems to want to provide a real answer to this, so here goes:
Your problem is you have an Expect script and you're treating it like a Bash script. Expect doesn't know what cd
, cp
, and git
mean. Bash does. You want a Bash script that makes a call to Expect. For example:
#!/usr/bin/env bash
password="$1"
sourcedest="path/to/sourcedest"
cd $sourcedest
echo "Updating Source..."
expect <<- DONE
set timeout -1
spawn git pull -f origin master
match_max 100000
# Look for password prompt
expect "*?assword:*"
# Send password aka $password
send -- "$password\r"
# Send blank line (\r) to make sure we get back to the GUI
send -- "\r"
expect eof
DONE
git checkout -f master
cp Config/database.php.bak Config/database.php
cp webroot/index.php.bak webroot/index.php
cp webroot/js/config.js.bak webroot/js/config.js
However, as larsks pointed out in the comments, you might be better off using SSH keys. Then you could get rid of the expect
call altogether.