Background Programs - & and ENV Var's in PERL
ThirtySecondNoob
Posts: 7
Background Programs - & and ENV{} Var's in PERL
Hi, I've been recently implementing a program that will access incoming data by forwarding data from an ip address to a local port and gathering that data, using these commands.
ssh -l ec34 -L 12345:127.0.0.1:10237 192.101.77.209 -n
Unfortunately this command takes up the command line, and when i add a '&' to it, I get the error:
Pseudo-terminal will not be allocated because stdin is not a terminal.
A wise friend of mine suggested looking into Environment Variables and modify one. I used the code:
foreach $key (sort keys(%ENV)) {
print "$key = $ENV{$key}
n";
}
To display these variables, but found nothing I felt I could use against this error. I'm thinking I may be missing a parameter in the `ssh...` command once I have added an ampersand & to it, or I have now confused it into thinking it's going to output into standard in (possibly as a default for the background), and I dont know why. Does anyone know how I can connect this data to a local port behind the scenes?
Comments
that should do exactly what you want, if I understand your concerns correctly.
What I have been doing is using this ssh command from my last post,
ssh -l ec34 -L 12345:127.0.0.1:10237 192.101.77.209 -n
to forward my incoming data to a port, and read off this port with:
netcat -t localhost 12345
Once I implemented your code after closing the current ssh linkup I had going, the code ran in correctly, but when I tried to netcat it I got this error message - "channel 2: open failed: administratively prohibited: open failed".
I'm unsure what exactly your command does, yet, and i'm fairly certain this is possible without admin privileges. Hopefully you can help me out!
John