Useful Commands

Some useful commands for Linux which could help you out.

Cut

The cut command allows you to extract specific sections (columns) of lines from a file or input stream by "cutting" the line into columns based on a delimiter and selecting which columns to display

--> cut -d ' ' -f1,3,6 access.log
[2023/10/25:15:42:02] sway.com:443 200
[2023/10/25:15:42:02] sway.com:443 301

Top

The top command shows you a list of processes in real time with their usage. It's a dynamic list, meaning it changes with the resource usage of each process.

Look for an installed software

dpkg -l

Base64 encode/decode

base64 [encode]
base64 -d [decode]

Grab banner

nc -nv 13.13.13.13 25
sudo tcpdump -i eth0 host 13.13.13.13 and 13.13.13.14

pspy64

Use pspy64 script to monitor Linux processes

./pspy64

File Hunting

for ext in $(echo ".xls .xls* .xltx .csv .od* .doc .doc* .pdf .pot .pot* .pp*");do echo -e "File extension: " $ext; find / -name *$ext 2>/dev/null | grep -v "lib\|fonts\|share\|core" ;done​

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