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Top Forums UNIX for Dummies Questions & Answers Can't tell whether lsof -i connections are coming in or going out Post 302501217 by chancho on Thursday 3rd of March 2011 02:10:48 AM
Old 03-03-2011
Thanks for the quick reply. I am using the Skype incoming port to filter the output of lsof(in my script) I guess it doesn't matter who started the connection, just that it is active. since TCP connections do communicate in both directions. Here are a couple examples from skype. I didn't connect to anyone here, but these are the servers it connects to automatically when it starts up:


Quote:
lsof -i | egrep ESTABLISHED| grep Skype
Skype 26591 JOE 63u IPv4 0x22fcaaec 0t0 TCP 10.0.1.2:54185->c-68-84-136-243.hsd1.md.comcast.net:31388 (ESTABLISHED)
Skype 26591 JOE 68u IPv4 0x221f4274 0t0 TCP 10.0.1.2:54186->213.146.189.201:12350 (ESTABLISHED)

Last edited by chancho; 03-03-2011 at 03:26 AM.. Reason: more info
 

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PLDD(1) 							 Linux User Manual							   PLDD(1)

NAME
pldd - display dynamic shared objects linked into a process SYNOPSIS
pldd PID pldd OPTION DESCRIPTION
The pldd command displays a list of the dynamic shared objects that are linked into the process with the specified process ID. The list includes the libraries that have been dynamically loaded using dlopen(3). OPTIONS
-?, --help Display program help message. --usage Display a short usage message. -V, --version Display the program version. VERSIONS
pldd is available since glibc 2.15. CONFORMING TO
The pldd command is not specified by POSIX.1. Some other systems have a similar command. EXIT STATUS
On success, pldd exits with the status 0. If the specified process does not exist, the user does not have permission to access its dynamic shared object list, or no command-line arguments are supplied, pldd exists with a status of 1. If given an invalid option, it exits with the status 64. EXAMPLE
$ echo $$ # Display PID of shell 1143 $ pldd $$ # Display DSOs linked into the shell 1143: /usr/bin/bash linux-vdso.so.1 /lib64/libtinfo.so.5 /lib64/libdl.so.2 /lib64/libc.so.6 /lib64/ld-linux-x86-64.so.2 /lib64/libnss_files.so.2 NOTES
The command lsof -p PID also shows output that includes the dynamic shared objects that are linked into a process. SEE ALSO
ldd(1), lsof(1), dlopen(3), ld.so(8) GNU
2014-09-27 PLDD(1)
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