.tar.bz2 $ tar -cvjf file_name.tar.bz2 directory .tar.xz $ tar -Jcvf file_name.tar.xz directory/ 

$ zip -e -r file_dst.zip file_or_directory_src <enter password> 

zlib-flate -uncompress < input_fil.zlib > output_file 

 .tar.bz2 $ tar -xvjf file_name.tar.bz2 .zip $ gunzip file_name.zip .rar $ unrar x file_name.rar .tar $ tar -xvf file_name.tar .tar.gz $ tar -vzxf file_name.tar.gz .tar.xz $ tar -Jxf file_name.tar.xz .bz2 $ bunzip file_name.bz2 

$ find ./* -type f -exec grep -l some_word {} \; OR (into .cc and .h files) $ grep --include=\*.{cc,h} -rnw './' -e "some words" 

$ find directory/ -type f -exec stat --format="%y %n" {} \; | sort -r 

$ find ./ -name file_name -exec rm {} \; 

# ldconfig -p | grep part_of_module_name 

$ fdupes -rdN directory/ 

$ tr '\n' ' ' < old_file.txt > new_file.txt 

$ cat file_name | grep -Ev '[:blank]*#|^[:blank]*$' 

$ cat old_file.txt |grep -v host > ip.txt 

$ shred -u file_name 

$ split -b 100k file_name part_ 

$ file=file_name; split -b $((`du $file -b |cut -f1` / 2)) $file part_ 

$ diff -u old_file updated_file > file.patch 

$ patch old_fle -i file.patch -o new_file 

$ patch -p1 < file_name.patch 

- edit (create if not exist): /etc/modprobe.d/blacklist.conf - insert one module for a line to disable it:	blacklist name_of_module 

# mount / -o remount,rw 

# mount -ro,loop,offset=<offset_in_bytes> /media/image.bin /mnt/ Ex.: Partition 3: 4.656 GiB (4999610368 bytes, 9764864 sectors from 99610624) Find the starting sector of the partition and multiply it by the size of each sector in bytes (usually 512). # mount -ro,loop,offset=$((99610624*512)) /media/image.bin /mnt/ 

# dumpe2fs /dev/sdXn | grep -i "block size" 

# sed -i.bak '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab && sudo swapoff -a && sudo rm -f -r /swapfile 

#Rip music CD: Ripperx $ sudo apt-get install ripperx 

#Convert WAV to MP3: lame $ sudo apt-get install lame $ lame -h music.wav music.mp3 

$ sudo install exiftool $ exiftool -all= *.jpg 

$ ffmpeg -i video.mp4 -pix_fmt rgb24 video.gif 

##CONVERT TO MP3 #Convert wav to mp3 ffmpeg -i audio.wav -acodec libmp3lame audio.mp3 #Convert ogg to mp3 ffmpeg -i audio.ogg -acodec libmp3lame audio.mp3 #Convert ac3 to mp3 ffmpeg -i audio.ac3 -acodec libmp3lame audio.mp3 #Convert aac to mp3 ffmpeg -i audio.aac -acodec libmp3lame audio.mp3 #----------------- #Cut video (extracts video from 20 sec. to 27 sec.) ffmpeg -i input.mp4 -ss 00:00:20 -t 00:00:27 -c copy output.mp4 #Remove video (removes a slice from 20 sec. to 27 sec.) ffmpeg -i input.mp4 -vf "select='not(between(t,20,27))', setpts=N/FRAME_RATE/TB" -af "aselect='not(between(t,20,27))', asetpts=N/SR/TB" output.mp4 #Concatenate videos ##create a list containing input video files (list.txt): file 'input1.mp4' file 'input2.mp4' file 'inputN.mp4' #---------------- ##Extract I-frames (the best frames) ffmpeg -i input.mp4 -vf "select=eq(pict_type\,I)" -vsync vfr frames/frame_%04d.png ##Extract all frames ffmpeg -i input.mp4 frames/frame_%04d.png ##Concat files ffmpeg -f concat -i list.txt -c copy output.mp4 #Remove audio from video file ffmpeg -i input.mov -c copy -an output.mov #Compress video ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4 #Convert dav to mp4 (SOURCE: https://stackoverflow.com/questions/32827539/ffmpeg-conversion-dav-to-any-video-files) ffmpeg -y -i input-file.dav -c:v libx264 -crf 24 output-file.mp4 

#apt install imagemagick convert input.png -quality 90 output.jpg 

#apt install imagemagick convert -resize x16 -gravity center -crop 16x16+0+0 input.png -flatten -colors 256 -background transparent output.ico 

#apt install qpdf qpdf --password=PASSWORD --decrypt File_with_pass.pdf File_without_pass.pdf 

#apt install pdftk pdftk File.pdf burst 

#apt install ghostscript gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=Reduced_file.pdf Original_file.pdf 

sudo dd if=/dev/sdXn of=/home/user/disk_img bs=4M status=progress 

$ git init $ git remote add origin https://github.com/account/repository 

$ git add . && git commit -m "UP" && git push origin master 

$ git reset HEAD~ 

$ git pull origin master fatal: Not possible to fast-forward, aborting. $ git fetch origin $ git merge master Already up to date. $ git commit -m "UP" $ git pull origin master --rebase Successfully rebased and updated refs/heads/master. $ git push origin master 

$ git pull origin master fatal: refusing to merge unrelated histories $ git pull origin master --allow-unrelated-histories 

$ dig +short mail.domain.com A 1.2.3.4 

$ dig +short domain.com MX 10 mail.domain.com. 

$ dig -x 1.2.3.4 ; <<>> DiG 9.18.28-1~deb12u2-Debian <<>> -x 1.2.3.4 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62971 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; QUESTION SECTION: ;4.3.2.1.in-addr.arpa.	IN	PTR ;; ANSWER SECTION: 4.3.2.1.in-addr.arpa. 86400 IN	PTR	mail.domain.com.br. ;; ADDITIONAL SECTION: mail.domain.com. 86400 IN	A	1.2.3.4 ;; Query time: 3 msec ;; SERVER: 192.168.0.1#53(192.168.0.1) (UDP) ;; WHEN: Fri Jan 17 14:00:18 -03 2025 ;; MSG SIZE rcvd: 102 

$ dig +short TXT domain.com "v=spf1 mx ~all" "google-site-verification=Sl2ABCDxY15QiI_1RgK9Ud8m3fz4ck7UTju_o8b5abC" 

##John The Ripper (using rockyou wordlist) # unshadow /etc/passwd /etc/shadow > hash.txt # john --format=crypt --wordlist=/usr/share/wordlists/rockyou.txt hash.txt 

#1 airmon-ng start [wi-fi interface] #2 airodump-ng -d [BSSID] -c [chanel] [wi-fi interface_mon] #3 aireplay-ng -0 0 -a [BSSID] [wi-fi interface_mon] #Example: # airmon-ng start wlp2s0 # airodump-ng -d AA:BB:CC:DD:EE:FF -c 6 wlp2s0mon # aireplay-ng -0 0 -a AA:BB:CC:DD:EE:FF wlp2s0mon 

@dnat