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Full Discussion: Issues with Expect Script
Top Forums Shell Programming and Scripting Issues with Expect Script Post 302992900 by premseth on Friday 3rd of March 2017 10:28:59 AM
Old 03-03-2017
Issues with Expect Script
Hi,

does the expect script tries to match for everyline on the screen irrespective of the prompts???

Code:
spawn ./Inst.sh
expect "path? (Y/N)"
send "Y\r"
expect "folder path"
send "$DIR1\r"
expect "path? (Y/N)"
send "Y\r"
expect "folder path2"
send "$DIR2\r"

After the installer begins.. it displays various lines before the first expect.
But the script tries to match for every line that is displayed before the 1st and timeouts.

1)Why does it tries to match for every lines that is out in the screen?
Code:
expect: does "" (spawn_id exp5) match exact string "path? (Y/n)"? no
Native ignore this if not using solaris OS.no stlport in java.library.path
expect: does "Native ignore this if not using solaris OS.no stlport in java.library.path" (spawn_id exp5)
 match exact string "path? (Y/n)"? no

when it finds the actual matches - the send is passed
Code:
expect: does ".............................path? (Y/n) \r\n" (spawn_id exp5) match glob pattern "path? (Y/n)"? yes
 expect: set expect_out(0,string) "path? (Y/n)"
expect: set expect_out(spawn_id) "exp5"
 send: sending "Y\r" to { exp5 }


2) and also it appends the previous results to next and the expect statement is appended recursively
Code:
expect: does " \r\n" (spawn_id exp5) match glob pattern "folder path"? no
Y
expect: does " " (spawn_id exp5) match glob pattern "folder path$"? no
expect: does " \r\n" (spawn_id exp5) match glob pattern "folder path$"? no
Y
expect: does " \r\nY\r\n" (spawn_id exp5) match glob pattern "folder path$"? no
folder path:
expect: does " \r\nY\r\n\r\nfolder path: \r\n" (spawn_id exp5) match glob pattern "folder path$"? no
expect: timed out
send: sending "/path/xx\r" to { exp5 }

because of this the expect statements gets varying including the newlines and the order is not maintained.

what is that i'm missing here?

thanks
 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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