Debugging Tools

net.md

Strace

strace -e trace=open,read ls /

File descriptos

• which files and libs process PID uses lsof -p PID

• which ports and protocols are listening lsof -s -p PID

UDP publish

echo "Never gonna give you up" > nc -4u host 1212

Network watches

tcpdump -A -s0 -ilo tcp port 6379

tcpdump [-Asi] COMMAND

-A for ASCII -s for size of packets. If 0, no size -i for the network interface

COMANND listen a port, a socker

There is a great utility called 'ldd', which can list depedent libraries used by a given executable file.

PS: I've just finished reading 4linux's 501 you borrowed me. Thanks! 👍