Skip to content

Latest commit

 

History

History
50 lines (33 loc) · 1.25 KB

unix-permission-tcp-command.md

File metadata and controls

50 lines (33 loc) · 1.25 KB
Raw

Unix permission -

"rwx" means the directory's owner can list its contents, create new files within it, and descend into it "r-x" means members of the directory's group can list its contents and descend into it "r-x" means other users can list the directory's contents and descend into it

https://ss64.com/bash/syntax-permissions.html

sudo find /path/to/Dir -type f -print0 | xargs -0 sudo chmod 644

Dump TCP logs -

  1. capture from specific interface:

    tcpdump -i eth0

  2. capture only N number of packets:

    tcpdump -c 5 -i eth0

  3. Print capture packets in ASCII:

    tcpdump -A -i eth0

  4. Display available interface:

    tcpdump -D

  5. Display packet in HEX and ASCII:

    tcpdump -XX -i eth0

  6. capture and save packets in a file:

    tcpdump -w 0001.pcap -i eth0

  7. read captured packets:

    tcpdump -r 0001.pcap

  8. capture IP address packets:

    tcpdump -n -i eth0

  9. capture only TCP packets:

    tcpdump -i eth0 tcp

  10. capture packets from specific port:

    tcpdump -i eth0 port 22

  11. capture packets from source IP:

    tcpdump -i eth0 src 10.197.22.13

  12. capture packets from dst IP:

    tcpdump -i eth0 dst 10.197.22.13

Size of files in the current directory

du -sh * | sed -e 's/\t/|/g' | sort -h -r