Test Site :)

Nukedisk

parted -l | grep "Disk /dev" && echo "Enter disk name like /dev/sdc" && read -r NAMEDISK && echo "WARNING DISK WILL GET NUKED!" && read -p "Press [Enter] key to start NUKE or cntl-c to quit!" && SEEKAMOUNT=$(blockdev --getsize $NAMEDISK) && DISKSPOT=$(expr $SEEKAMOUNT - 4096) && echo "Killing the front of the drive" && dd if=/dev/urandom of=$NAMEDISK bs=512 count=4096 && echo "Now the back" && dd if=/dev/urandom of=$NAMEDISK bs=512 count=4096 seek=$DISKSPOT && echo "The drive is now a wreck, mission accomplished!" && read -p "Press Enter to create a label for the device, or ctrl-c to quit" && parted $NAMEDISK mklabel msdos && read -p "Label created, press Enter to quit" && exit

CPU Stress Test

read -p "Please enter the number of minutes for test >" MINTEST && [[ $MINTEST == ?(-)+([0-9]) ]]; NCPU="$(grep -c ^processor /proc/cpuinfo)";  ((endtime=$(date +%s) + ($MINTEST*60))); NCPU=$((NCPU-1)); for ((i=1; i<=$NCPU; i++)); do while (($(date +%s) < $endtime)); do : ; done & done

System Information Script

OURHOST=$(hostname) && OURMEM="$(cat /proc/meminfo | grep Mem)" && OURDISK="$(fdisk -l | grep sd)" && OURCPU="$(cat /proc/cpuinfo | grep 'model name' | uniq)" && OURVER="$(cat /etc/*-release | head -n 3)" && OURBOARD="$(cat /sys/devices/virtual/dmi/id/board_{vendor,name,version})" && OURBREAK="$(printf '%0.s-' {0..60};)" && OURIPS="$(ip addr show | grep 'inet ' | awk '{print $2}')" && OURRESOLV="$(cat /etc/resolv.conf | grep nameserver | awk '{print $2}')" && clear && printf "\\nMetadata Verification Check for: " && echo "$OURHOST" && printf "\\nThis System's Motherboard:\\n" && echo "$OURBREAK" && echo "$OURBOARD" && printf "\\nThis System's Memory:\\n" && echo "$OURBREAK" && echo "$OURMEM" && printf "\\nThis System's Disks:\\n" && echo "$OURBREAK" && echo "$OURDISK" && printf "\\nThis System's Processor:\\n" && echo "$OURBREAK" && echo "$OURCPU" && printf "\\nThis System's Network Settings:\\n" && echo "$OURBREAK" && printf "\\nIP Addresses:\\n" && echo "$OURIPS" && printf "\\nResolvers:\\n" && echo "$OURRESOLV" && printf "\\nThis System's Linux:\\n" && echo "$OURBREAK" && echo "$OURVER"

Robust Chroot Environment:
Mount root partition:
sudo mount /dev/sdXY /mnt
Where /dev/sdXY is your root partition, e.g. /dev/sda1

Mount boot partition as needed:
sudo mount /dev/sdYY /mnt/boot

Mount your virtual filesystems:
for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done

Chroot:
sudo chroot /mnt

Fix web permissions:
find /var/www/html/ -type d -exec chmod 755 {} \;
find /var/www/html/ -type f -exec chmod 644 {} \;


Scan a subnet:
nmap -sn -v 192.168.1.0/24

Show all listening TCP/UDP ports:
lsof -Pan -i tcp -i udp

Scan folder sizes:
sudo du -d 1 -c -h

Netcat basics:
cat afile | nc ip port
nc -l theport > file

Compress a disk image:
Make image:
dd if=/dev/lettershere bs=2M conv=sync,noerror | gzip -c > filename.img.gz

Restore image:
gzip -c -d name.img.gz | dd bs=2m of=/dev/newvictim


How to Git:
git touch filename.txt #this creates a file to write
vim filename.txt #this loads the vim, learn it
<wite code> #here is your coding session
git add .  #this adds the file(s) to the git repo
git commit -a #this creates the commit
<write what you did> #you need to write changes
:wq #vim command to save and quit learn all cmds
git push #here is where it transmits via ssh to repo

If there are errors:
git checkout #this compares the branches
git pull  #this merges master with yo dev shit
git checkout #this shows you are ahead now
git push #put the change in the repo

Minimize the windows to the taskbar, make them full screen or close them.

Drag the title bar to move the windows or resize them from the bottom right corner.

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