Schnipsel

openssl

• openssl x509 -in /tmp/cert.der -inform der -text -noout
• openssl x509 -in /tmp/cert.der -inform der -outform pem -out /tmp/cert.pem
• openssl rsa -in /tmp/key.der -inform der -check -noout -text

adb

• adb shell am stack list
• adb shell 'su -c /data/local/tmp/frida-server -D'

misc

• iconv -f utf-16 -t utf-8 $FILE
  • convert utf-16 encoded file to utf-8
• podman run -it ubuntu
• mount.cifs //$HOST/$SHARE /$MNT/$POINT -o user=$USER,uid=1000
• `mount -t nfs $HOST:/$SHARE /$MNT/$POINT
• gpg -c --cipher-algo AES256 $FILE
• echo 100 | sudo tee /sys/class/backlight/amdgpu_bl0/brightness
• pandoc -t slidy -o presentation.html -s presentation.md

xrandr

• cvt 1920 1080 60
• xrandr --newmode 1920x1080 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
• xrandr --addmode Virtual1 1920x1080
• xrandr --output Virtual1 --mode 1920x1080

jq

• jq -r '.[].ip' foo.json
  • get field “ip” from json-formatted data

grep

• grep -v -f file1 file2
  • find lines in file2 that are not in file1

awk

• awk -F ',' '{ print $1 "\t" $NF}'
  • print the first and the last column, separated by tab, use field separator “,”
• awk '{ if ($3 == "something") print}'
  • print if condition is met

find

• find . -perm -a+w -type d,f -ls
  • find and list world-writable files and directories in cwd and subdirectories
• find /usr -type f \( -perm -04000 -o -perm -02000 \)
  • find suid/sgid executables in /usr and subdirectories

tmux

• tmux -S $SESSION ls
  • list tmux sessions on socket $SOCKET as defined by byobu -S $SESSION
• tmux -S $SESSION attach -t $NUM
  • attach to tmux session $NUM on socket $SOCKET

capabilities

• setcap all+eip /path/to/$BINARY
  • assign all capabilities (in the effective, inheritable and permitted sets) to $BINARY
• setpriv –bounding-set +all –ambient-caps +all –inh-caps +all $BINARY
  • run $BINARY with all capabilities