All commands (14,082)
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Since systemd-resolved was implemented, add a DNS server have become weirder and harder than before. With this command, you can add a DNS server on-the-fly tied to an specific interface
0sudo systemd-resolve --interface <NombreInterfaz> --set-dns <IPDNS> --set-domain mydomain.com -
Check if TCP port is reacheable Show Sample Output
0Test-NetConnection -ComputerName example.com -Port 443 -
0time seq 65535 | parallel -k --joblog portscan -j9 --pipe --cat -j200% -n9000 --tagstring '\033[30;3{=$_=++$::color%8=}m' 'nc -vz localhost $(head -n1 {})-$(tail -n1 {})'
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Clear Cached Memory on Ubuntu based distributions, and also display memory status. Please do not use this on a production machine unless you really really know what you are doing. Echo 3 is a kinder way of purging the memory, you can also use 'echo 2' or 'echo 1' if #1 You know what you are doing, and #2 refer to number 1 :-)
0sudo free && sync && sudo echo 3 | sudo tee /proc/sys/vm/drop_caches -
Useful for checking if a large number of PNG files was downloaded successfully by verifying the built-in CRC checksum. For incomplete files, the command will print: "00002309.png EOF while reading IDAT data ERROR: 00002309.png" The process is very fast; checking 21,000 files of 5MB in size took only five minutes on a 2011 Intel mobile dual-core.
0ls *.png |parallel --nice 19 --bar --will-cite "pngcheck -q {}" -
0bash -c 'exec 3<>/dev/tcp/google.com/80; echo EOF>&3; cat<&3'
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0openssl s_client -connect HOSTNAME.at:443 -showcerts </dev/null 2>/dev/null | openssl x509 -outform PEM > meinzertifikat.pem
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Read a file or standard input and only outputs lines that start with a dot or period "." Show Sample Output
0grep '^\.' file -
-1export IP="$(hostname -I | awk '{print $1}')"
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Directly download all mp3 files of the desired podcast
0curl http://radiofrance-podcast.net/podcast09/rss_14726.xml | grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*mp3" | sort -u | xargs wget -
This command will take the output of a command and color any STDERR output as a different color (red outline in this case) Show Sample Output
2./errorscript.sh 2> >(echo "\e[0;41m$(cat)\e[0m") -
The -start_number can be ignored if sequence starts with 0, otherwise use first number in sequence
0ffmpeg -start_number 0053 -r 1/5 -i IMG_%04d.JPG -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4 -
1MYLINK=$(curl 'https://www.premiumize.me/api/transfer/directdl?apikey=dzx3rqwrxme8iazu' \ -H 'accept: application/json' \ -H 'Content-Type: application/x-www-form-urlencoded' --data-raw 'src='$URL | jq -r '.content[] | .link' )
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You will get an json respond if all is fine Show Sample Output
1curl 'https://offcloud.com/api/remote?key=XXXXXX' \ -H 'accept: application/json' \ -H 'Content-Type: application/x-www-form-urlencoded' --data-raw "url=$MYLINK&remoteOptionId=XXXXX" -
only simple example how to combine rclone & jq Show Sample Output
1for i in *; do test -d "$i" && ( rclone size "$i" --json -L 2> /dev/null | jq --arg path "$i" 'if .bytes < 57462360 then ( { p: $path , b: .bytes}) else "none" end' | grep -v none | jq -r '.p' | parallel -j3 rclone purge "{}" -v -P ); done -
Get the two first lines of a file and quit. Show Sample Output
1sed -n '1,2p;3q' file -
1echo 'The quick brown fox jumps over the lazy dog' | sed 's|.* ||'
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Extracts only file number 12 from file. It's meant for text files. Replace 12 with the number you want. First line starts at 1 not 0. We use q on next line so doesn't process any line more.
1sed -n '12p;13q' file -
Use -i option to edit directly a file: sed -i 's|\/|\\|g' file Show Sample Output
2echo '/usr/bin/' | sed 's|\/|\\|g' -
Use -i to edit file directly: sed -i 's|\\|\/|g' file Show Sample Output
1echo 'C:\Windows\' | sed 's|\\|\/|g' -
It his example removes ' dog', last space included. Show Sample Output
0echo 'The quick brown fox jumps over the lazy dog' | sed 's|\(.*\) .*|\1|' -
Downloads the frame of given YouTube video at 8 minutes 14 seconds. Requested format is "299", which 1080p only video.
-1ffmpeg -ss 8:14 -i $(youtube-dl -f 299 --get-url URL) -vframes 1 -q:v 2 out.jpg -
1grep --color -E 'pattern|$' file
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A text file contains thousands of numbers. This command prints lines were the number is greater or equal than a specified value (134000000). Show Sample Output
0awk '$NF >= 134000000 {print $0}' single-column-numbers.txt -
single-column-numbers.txt is a text file with 22658 rows (numbers) in a single column. Each number can range from 0 to 134298679.533591 and the dot is for the decimals. This is done with perl because awk can't sum such high numbers. Show Sample Output
0perl -lane '$total += $F[0]; END{print $total/$.}' single-column-numbers.txt - 1 2 3 > Last ›
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