expect : spawn command not found

[aliov]

Hi ,

I have to write a bash script uses expect command to pass a password,
#!/bin/sh
#!/usr/bin/expect

the problem i'm having it's the script it's interpreted as a bash shell and it's giving me always spwan command not found ! howerver if i remove #!/bin/sh , the whole script is interpreted as expect and all the bash variables are giving errors !

so how can i solve this problem !

[wje_lf]

How about something like this?

#!/bin/sh

/usr/bin/expect <<EOD
place expect commands here
EOD

[aliov]

Thanks for your reply , i think we are in the midway to get it done , but let me provide more details , i have to run cvs command and the store the output in a bash variable to use it later , the problem is this cvs command requires a password .

TAG=`cvs history -x T -la -n detectors/Tile/$CVS_PKG | grep '\:A\]$' \
       | sed '/tdaq-/d' | sort --key=2,3 | sed -n '$s/^.*\[//p' | sed 's/:A\]$//'`

this get the last development version for a specific package , and i have to expect the password here, and storing the output of it in the TAG variable .

Really it'll be GREAT if it can be done .

[wje_lf]

I've never used cvs, and it's been quite a while since I've used expect, but I do know that you're going to have a complication because of two things.

1. You capture the output of the cvs command into a shell variable, which really only works well if it's a simple piping operation, with no other interaction with the user.
2. But this operation does really interact with the user, since a password is required.

I'm not sure, but the following should be very close to what you want to do. Please note the extra backslashes in color.

#!/bin/sh

cat > scratch1 <<EOD
#!/bin/sh

cvs history -x T -la -n detectors/Tile/\$CVS_PKG \
    | grep '\:A\]\$' \
    | sed '/tdaq-/d' \
    | sort --key=2,3 \
    | sed -n '\$s/^.*\[//p' \
    | sed 's/:A\]\$//' \
    > output.txt
EOD
chmod 700 scratch1
cat > scratch2 <<EOD
#!/usr/bin/expect

spawn ./scratch1
expect "password:"
send "qwerty\r"
expect eof
EOD
chmod 700 scratch2
./scratch2
TAG=`cat output.txt`

I haven't debugged this, but it should be very close to what you want.

It does assume, though, that cvs doesn't use standard output and standard input to get the password.

[aliov]

Hey can you give me your mailbox address like that i can send you a gift

MANY THANKS , IT'S DONE .