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Displays last month, current month, and next month side by side. Show Sample Output
1cal -3 -
Here is another way to show the path, one directory per line. The command `tr` translates the colon into the new line, taking input from the $PATH variable Show Sample Output
0tr : \\n <<<$PATH -
The Linux's `cal` command is nice, but there are times when I need to see two months side by side and this command will do it. Show Sample Output
1paste <(cal 8 2018) <(cal 9 2018) -
Find recursively all files in ~/Notes with the extension '.md' and pipe that via xargs to rename command, which will replace every '.md' to '.txt' in this example (existing files will not be overwritten).
1find ~/Notes -type f -iname '*.md' -print0 | xargs -0 rename --no-overwrite .md .txt {} -
HDMI-1 is the interface in the example, which can be obtained just by typing xrandr and surfing through the output. There are a hell lot of configurations that can be done but I prefer auto because it works in most cases.
LifesaverShow Sample Output1xrandr --output < interface-name > --auto -
Pluralize a word, aka change from single to multiple; text formatting.
echo hamburgler | pluralizeShow Sample Output0pluralize() { if [ -n "$1" ]; then echo ${1}s else while read line; do pluralize $line done fi } -
List out all the names from the zip file and pass it to xargs utility to delete each one of them
2unzip -Z -1 <filename.zip> | xargs -I{} rm -v {} -
Formats the output from `ioreg` into XML, then parses the XML with `xmllint`'s xpath feature. Show Sample Output
1ioreg -ad2 -c IOPlatformExpertDevice | xmllint --xpath '//key[.="IOPlatformUUID"]/following-sibling::*[1]/text()' - -
0ioreg -d2 -c IOPlatformExpertDevice | awk -F\" '/IOPlatformUUID/{print $(NF-1)}'
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0mknod -m 0666 /dev/null c 1 3
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https://stackoverflow.com/questions/10768160/ip-address-converter Show Sample Output
1awk {'print rshift(and($1, 0xFF000000), 24) "." rshift(and($1, 0x00FF0000), 16) "." rshift(and($1, 0x0000FF00), 8) "." and($1, 0x000000FF)'} -
I couldn't find movie library on any of the SQLlite Stremio databases, but on ~/.config/stremio/backgrounds2 the background image filenames corresponds to IMDB URL. So I foreach files and wget HTML title of each movie and save it to a file. This will retrieve all movie names, not just the Library.
0time for movie in $(ls -1 /home/$USER/.config/stremio/backgrounds2 | sort -u);do wget -qO- --header="Accept-Language: en" "https://www.imdb.com/title/$movie/" | hxselect -s '\n' -c 'title' 2>/dev/null | tee ~/$(date +%Y-%m-%d_%T)-movie-list.txt ; done -
Useful for running long commands with the laptop lid closed and screen off. Also see Gnome extension Caffeine. https://extensions.gnome.org/extension/517/caffeine/
0exec systemd-inhibit --what=handle-lid-switch --mode=block bash -
4function hibp() { sha1=$(echo -n "$1"|sha1sum|awk '{print toupper($0)}'|tr -d '\n'); curl -s -H $'Referer: https://haveibeenpwned.com/' https://api.pwnedpasswords.com/range/$(echo -n $sha1|cut -c1-5)|grep -i $(echo -n $sha1|cut -c6-40); }
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0ffmpeg -i input.mp4 -vcodec libx264 -crf 30 output.mp4
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This snippet allows to process the output of any bash command line by line.
1while read -r line; do echo $line; done < <(YOUR COMMAND HERE); -
The file should be a text file formatted like this example: 1 Introduction 10 Chapter 1 +10 Chapter 1, Part A +25 Chapter 1, Part B ++25 Chapter 1, Part B, Subsection 1 ++27 Chapter 1, Part B, Subsection 2 +30 Chapter 1, Part C 50 Chapter 2 70 Chapter 3 The '+' indicates a sub-level heading (multiple +'s for multiple sub-levels). The first number on the line is the source page reference number. The rest of the text on the line is the name of the chapter / subheading.
0k2pdfopt -mode copy -n -toclist $tocFile $inFile -o $outFile -
1find /path -name '*.pdf' -exec sh -c 'pdftotext "{}" - | grep --with-filename --label="{}" --color "your pattern"' \;
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0echo -e "\n[sublime-text]\nServer = https://download.sublimetext.com/arch/dev/x86_64" | sudo tee -a /etc/pacman.conf
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Converts an OGG file to MP3 at desired quality, preserving the id3v2 tags.
0ffmpeg -i input.ogg -ab 256k -map_metadata 0:s:0 output.mp3 -
You need to use the aws ec2 describe instances to get the JSON file. Show Sample Output
0cat aws.json | jq -r '.Reservations[].Instances[] | [.PrivateIpAddress, .SecurityGroups[].GroupId,.SecurityGroups[].GroupName,.NetworkInterfaces[].NetworkInterfaceId,(.Tags[] | select(.Key =="Name") | .Value),([.InstanceId| tostring] | join(";"))]|@csv' -
0ifconfig $(route -n |awk '/0[.]0[.]0[.]0/{print $NF;exit}') | awk '/inet/{print $2}'
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2docker ps -aq --filter status=exited | xargs docker rm
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Apart from an exact copy of your recent contents, also keep all earlier versions of files and folders that were modified or deleted. Inspired by the excellent EVACopy http://evacopy.sourceforge.net Show Sample Output
2backup() { source=$1 ; rsync --relative --force --ignore-errors --no-perms --chmod=ugo=rwX --delete --backup --backup-dir=$(date +%Y%m%d-%H%M%S)_Backup --whole-file -a -v $source/ ~/Backup ; } ; backup /source_folder_to_backup -
0docker image rm $(docker image list -f "dangling=true" -qa)
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