Let's face it, we are mere mortals that keep forgetting everytime we learn something new. So that's why I created this simple cheatsheet. Every time I forget something important, I want to refer back in one single place instead of scouring the Internet for the same answer that I did before. Hope this will help.
df -h | awk '/^C:\\/ {print $3 "/" $2}'df -h -t ext4 -t xfs | awk '{print $1, $3 "/" $2}' | column -tfree -h | awk '/^Mem:/ {print $3 "/" $2}'find . -printf '%s %p\n'| sort -nr | head -10du -hsx * | sort -rh | head -10ip a show scope global dynamic | awk '$1 == "inet" {print $2, $4}'ps axch -o cmd:15,%mem --sort=-%memps axch -o cmd:15,%cpu --sort=-%cpuapt-mark showmanualecho $PATH | tr : \\nsed 's/"//g'sed 's/[^ ]* //'sed 's/,$//'sed -e 's/\[[^][]*\]//g'sed 's/,/ /g'awk '{print $0}'awk '(NR>1)'awk 'NF'awk '{$1=$1};1awk 'NR==2{ print; }'grep -oP '\[\K[^\]]+'grep -m1 'searchstring' file_namecurl -4 https://icanhazip.comsystemctl list-unit-files --state=enabled --no-pagerffmpeg -i video_name.mp4 -i audio_name.m4a -c copy -map 0:v -map 1:a output_name.mp4
youtube-dl --extract-audio --audio-format mp3 https://ytvideolinknmap -sC -sV -p- -oN output-name ip-addressnmap --script=http-enum -p80 ip-addressSearch name of the hidden directory on the web server with wordlist.
gobuster dir -u http://ip-address -w /usr/share/dirbuster/wordlists/directory-list-2.3-medium.txtenum4linux -M -G -S ip-addresssmbclient //ip-address/Anonymoushydra -l ssh-username -P /usr/share/wordlists/rockyou.txt ssh://ip-address