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Full Discussion: Expect return code
Top Forums UNIX for Beginners Questions & Answers Expect return code Post 303013160 by vikus on Friday 16th of February 2018 04:28:15 AM
Old 02-16-2018
Expect return code
Hello everyone
Can some help me with understand return code in expect
Code:
#!/usr/bin/expect

set timeout  1

set SRV [lindex $argv 0]
set user [lindex $argv 1]
set pw [lindex $argv 2]

spawn ssh $user@$SRV
expect {
        "(yes/no)? " { send "yes\r" ; exp_continue }
        "assword: " { send "$pw\r" ; exp_continue }
        eof
}

expect "$ "
send "sudo su - root\r"
expect "word:"
send "$pw\r"
expect "# "
send "ps -ef | grep -i sendmail | grep -v grep\r"
expect "# "
set retcode $?

if { $retcode != 0} {
    puts "False : $retcode\n";
} else {
    puts "Success : $retcode\n";
}

exit

I wrote this code to check if sendmail is running, but part with return code is not working.
 

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LEARN ABOUT DEBIAN

lindex

lindex(3tcl)						       Tcl Built-In Commands						      lindex(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       lindex - Retrieve an element from a list

SYNOPSIS

       lindex list ?index...?
_________________________________________________________________

DESCRIPTION

       The  lindex  command  accepts  a  parameter,  list, which it treats as a Tcl list. It also accepts zero or more indices into the list.  The
       indices may be presented either consecutively on the command line, or grouped in a Tcl list and presented as a single argument.

       If no indices are presented, the command takes the form:
	      lindex list
       or
	      lindex list {}
       In this case, the return value of lindex is simply the value of the list parameter.

       When presented with a single index, the lindex command treats list as a Tcl list and returns the index'th element from it (0 refers to  the
       first  element of the list).  In extracting the element, lindex observes the same rules concerning braces and quotes and backslashes as the
       Tcl command interpreter; however, variable substitution and command substitution do not occur.  If index is negative  or  greater  than	or
       equal  to  the number of elements in value, then an empty string is returned.  The interpretation of each simple index value is the same as |
       for the command string index, supporting simple index arithmetic and indices relative to the end of the list.

       If additional index arguments are supplied, then each argument is used in turn to select an element from the previous  indexing	operation,
       allowing the script to select elements from sublists.  The command,
	      lindex $a 1 2 3
       or
	      lindex $a {1 2 3}
       is synonymous with
	      lindex [lindex [lindex $a 1] 2] 3

EXAMPLES

	      lindex {a b c}
		    -> a b c
	      lindex {a b c} {}
		    -> a b c
	      lindex {a b c} 0
		    -> a
	      lindex {a b c} 2
		    -> c
	      lindex {a b c} end
		    -> c
	      lindex {a b c} end-1
		    -> b
	      lindex {{a b c} {d e f} {g h i}} 2 1
		    -> h
	      lindex {{a b c} {d e f} {g h i}} {2 1}
		    -> h
	      lindex {{{a b} {c d}} {{e f} {g h}}} 1 1 0
		    -> g
	      lindex {{{a b} {c d}} {{e f} {g h}}} {1 1 0}
		    -> g

SEE ALSO

       list(3tcl), lappend(3tcl), linsert(3tcl), llength(3tcl), lsearch(3tcl), lset(3tcl), lsort(3tcl), lrange(3tcl), lreplace(3tcl), string(3tcl) |

KEYWORDS

       element, index, list

Tcl									8.4							      lindex(3tcl)
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