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Opening a file to read during telnet in perl

by ramki067 (Acolyte)
on Oct 31, 2013 at 08:05 UTC ( #1060531=perlquestion: print w/replies, xml ) Need Help??
ramki067 has asked for the wisdom of the Perl Monks concerning the following question:

I have a telnet session opened having username and password. I tried to open a file for reading but its giving me an error saying "No such file or directory" whereas i confirmed that file is there in the path by print command. Can we open a file to read during telnet session? or how can i open a file during telnet session? Please help. Here is my code and the file is ab.txt
use Net::Telnet; $t = new Net::Telnet (Timeout => undef, Dump_log=>"dump.log"); $username="sqa"; $password="4q2013"; $t->open(""); $t->login($username, $password); $cmd='cd '.'/projects/74/android-rfs/sys tem/app'; my $ldir="/projects/74/Android"; ipadd(); print $ip_add=@ipadd[2]; print "Value of \$t is:$t\n"; @lines=$t->cmd($cmd) or die "Cannot perform cmd:$!"; print @lines; $t->cmd("cp $nmn.apklist.txt $ldir\n"); $cmd1='cd '.'/projects/74/Android'; @lines1=$t->cmd($cmd1); print @lines1; $req_apks="/projects/74/Android/ab.txt"; print "Value of \$req_apks is: $req_apks\n"; ######### Installating APKs ################################ $path="$ldir/latest_apks"; @b= $t->cmd("cd $path\n"); print "cd:@b\n"; $t->cmd("./adb kill-server\n") or die "Cannot kill adb servers +:$!"; sleep(10); $t->cmd("./adb start-server\n") or die "Cannot start adb serve +rs:$!"; sleep(10); @line=$t->cmd("./adb devices\n"); print "adb:@line\n"; sleep(10); @cnt=$t->cmd("./adb connect $ip_add\n") or die "Cannot connect + adb to bo ard IP Address:$!"; print @cnt; sleep(5); open(F2, "$req_apks") or die "Cannot open APK Filelist file $req_apks: +$!"; while (my $req = <F2>) { print "Installing new package $req\n"; @b= $t->cmd("./adb install $req \n") or die "Cannot install:$! +"; print @b; print @b; sleep(3); } #$t->close; $t->cmd("./adb disconnect $ip_add\n"); sleep(6); $t->cmd("./adb kill-server\n") or die "Cannot kill adb servers after i +nstall:$!" ; sleep(10); close(F2); print "Listapk function ended\n"; sub ipadd { $ip=''; $ip_port='10005'; $port = new Net::Telnet->new( Host=>$ip,Port=>$ip_port); $port->write("ifconfig eth0\n"); while (my $line = $port->getline()) { if ($line=~/flags/) { @ipadd= split(" ",$line); #print $line; #print @ipadd[2]; goto ln; } else {} } ln: $port->close; }

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Re: Opening a file to read during telnet in perl
by hdb (Monsignor) on Oct 31, 2013 at 08:34 UTC

    Where do you expect your file to be? Your statement

    open(F2, "$req_apks") or die "Cannot open APK Filelist file $req_apks: +$!";

    tries to open a file on the local, not the remote machine.

      OK. I'm already in telnet session.Then, how do i open a remote file from telnet session? Thanks.

        how do i open a remote file from telnet session?

        At first I thought, "you can't". But then I realised: Just the same as on your local host. That means, if you want perl to open your file, you will have to start a perl programme-or-script through your telnet session remotely.

        This is a correct answer to your question, but I guess it isn't what you wanted? If you mean to open a remote file and process it locally, then telnet is just the wrong protocol*

        Interactive terminal sessions and file transfer are different things. There tend to be protocols like ssh/scp/sftp or in the olden days telnet/ftp to address either issue.

        * telnet is the wrong protocol in most situations. Unless it is the early 1990es again. Or we're stuck in ciscoland.

        Cheers, Sören

        Créateur des bugs mobiles - let loose once, run everywhere.
        (hooked on the Perl Programming language)

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