Issue with capture the output of android command in perl

ramki067 has asked for the wisdom of the Perl Monks concerning the following question:

I'm running a perl script on android prompt. Wanted to know how do i capture output of a android command to a perl variable. I've done the following, but output is not captured. Please help.

use Net::Telnet;
$ip='xx.xxx.xx.xx';
$ip_port='10009';
$port  = Net::Telnet->new( Host=>$ip,Port=>$ip_port,Dump_log=> "dump.l
+og");

@lnes= $port->cmd("input keyevent 66");
        sleep(5);
        $lc=0;
        print "Console Log:";
        while($lc<5)
        {
            print $lnes[$lc];
            print FILE $lnes[$lc];
            ++$lc; 
        }
[download]

I"m getting only "root@android:/mnt/sdcard # input keyevent 66" only and not the messages displayed after i enter this command. Please help.

Comment on Issue with capture the output of android command in perl Download Code

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Re: Issue with capture the output of android command in perl by shmem (Chancellor) on Nov 27, 2013 at 09:27 UTC
At the moment the list of lines is assigned to your `@lnes` variable (why do you omit the i? iShortage?), the telnet command already has returned. No need to sleep here. The problem might be that a) there are no lines returned or b) the lines are empty and/or c) they have no newline character at the end. Try: `@lines= $port->cmd("input keyevent 66"); # added i print "Number of lines returned: ", scalar(@lines), "\n"; print "Console Log:\n"; # added newline character for( @lines ) { print ">$_<\n" }` [download] perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re: Issue with capture the output of android command in perl
by shmem (Chancellor) on Nov 27, 2013 at 09:27 UTC

At the moment the list of lines is assigned to your @lnes variable (why do you omit the i? iShortage?), the telnet command already has returned. No need to sleep here.

The problem might be that a) there are no lines returned or b) the lines are empty and/or c) they have no newline character at the end. Try:

@lines= $port->cmd("input keyevent 66"); # added i
print "Number of lines returned: ", scalar(@lines), "\n";
print "Console Log:\n";  # added newline character
for( @lines ) {
    print ">$_<\n"
}
[download]

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

[reply]
[d/l]
[select]