All commands (14,187)
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0find . -type f -regex '.*\.\(cpp\|h\)' -exec sed -i 's/^[[:blank:]]\+$//g' {} \;
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1glxinfo |grep -i -o 'device|memory\|[0-9]\{1,12\} MB'|head -n 1
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If you have two sets of files that may share hard-linked files, it can be useful to identify which ones are hard links to same underlying inode (file). This command shows you all of those, sorted by inode#. In my example the two directory trees to compare share a common parent, so I run the command in that parent and just use
find .to start from the current directory. If yours are in different locations, you can pass both paths to find:find /directory1 /directory2 -type f -printf '%10i %p\n' | sort | uniq -w 11 -d -D | lessShow Sample Output0find . -type f -printf '%10i %p\n' | sort | uniq -w 11 -d -D | less -
2find . -type f -exec grep -Iq . {} \; -exec grep -oE "(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)" {} /dev/null \;
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One liner is based on this article: https://www.computerhope.com/issues/ch001307.htm Show Sample Output
-4lspci|grep -i "VGA Compatible Controller"|cut -d' ' -f1|xargs lspci -v -s|grep ' prefetchable' -
This way you don't need to replace first line of a bash foo.sh script #!/bin/bash with #!/bin/bash -x to obtain the same effect
-1bash -x foo.sh -
4a=7; echo $a; echo "$a"; echo '$a'; echo "'$a'"; echo '"$a"'
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dmesg -t: no timestamp -W: follow new messages -l: log-level notice gawk if the fourth word is "Attached" echo a sentence through espeak
0dmesg -tW -l notice | gawk '{ if ($4 == "Attached") { system("echo New device attached | espeak") } } -
Tails a log and replaces it line-by-line according to whatever you want to replace. Useful if the file writing to the log can't be modified, so you need to modify its output instead. Show Sample Output
1tail -F logfile|while read l; do sed 's/find/replace/g' <<< $l; done -
Colorify colors input by converting the text to a number and then performing modulo 7 on it. This resulting number is used as the color escape code. This can be used to color the results of commands with complex outputs (like "482279054165371") so if any of the digits change, there's a good chance the color will change too. I say good chance because there's only 7 unique colors here, so assuming you were watching random numbers, there would be a 6/7 chance that the color would change when the number changed. This should really only be used to help quickly identify when things change, but should not be the only thing relied upon to positively assert that an output has not changed. Show Sample Output
2function colorify() { n=$(bc <<< "$(echo ${1}|od -An -vtu1 -w100000000|tr -d ' ') % 7"); echo -e "\e[3${n}m${1}\e[0m"; } -
This version will work if "*screenflow" returns any results with weird characters, and will actually compress the tarballs.
3find . -maxdepth 1 -type d -name '*screenflow' -exec tar jcvf {}.tar.bz2 {} \; -
I use screenflow to create and edit videos. The default storage for a single video is a folder. If I want to move that someplace, it's easier to zip up the folder and send it. If I'm making a series of short videos, I might have 10 folders. This will go through and make a single bz3 file for EACH folder.
0for f in *screenflow ; do tar cvf "$f.tar.bz2" "$f"; done -
Last listed files presumably have higher precedency then files listed first, i.e. configuration files in the personal .config directory will be listed last and their config parameters will be more authoritative then default config parameters defined in /etc directory which are usually listed above them. If you replace ".conf" with ".ini" in the command, initial files will be listed instead of config files. If you do not like to list multiple access to the same config file, pipe to "uniq" or "uniq -c" to prefix lines by the number of occurrences Show Sample Output
7strace 2>&1 <any_executable> |egrep -o "\".*\.conf\"" -
1grep -Eio '([[:alnum:]_.-]{1,64}@[[:alnum:]_.-]{1,252}?\.[[:alpha:].]{2,6})'
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Replace $CMDLINE_FILENAME with the name of the cmdline file you copied from /proc/pid, and $COMMAND with the command to execute with those arguments.
-2tail -zn+2 $CMDLINE_FILENAME | xargs -0 $COMMAND -
First, use
findto find directories exactly one level below current directory, then create a tar file using the directory as the basename.4find . -maxdepth 1 -mindepth 1 -type d -exec tar cvf {}.tar {} \; -
For easy portability you can include you service account blobs directly to your rclone config. So it generate a rclone config like the following: [dst977] type = drive scope = drive service_account_credentials = {"type":"service_account","project_id":"saf-ju66hcgi8qf8zidhvfww4oxwe7","private[.................] } Show Sample Output
1bash -c 'COUNT=0; for i in $(find . -iname "*.json");do ((count=count+1));VAL=`cat ${i} | jq -c '.'` ; echo "[dst$count]";echo "type = drive";echo "scope = drive";echo "service_account_credentials = $VAL" ; echo "team_drive = 0AKLGAlhvkJYyUk9PVA" ;done' -
2d - is a shortcut for a period back in time Show Sample Output
0% sudo log show --style syslog --last 2d | awk '/Enter/ && /unlockUIBecomesActive/ {print $1 " " $2}' -
After install https://linux.dell.com/repo/community/openmanage/ (Complete, all), install these packages or you will get segfaults on update and it will fail.
0apt install raidcfg dtk-scripts syscfg smbios-utils sfcb cim-schema dcism -
0unshare -r --fork --pid unshare -r --fork --pid --mount-proc bash
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Useful for containers and environments where you need to know if a port is currently in listen mode but you have not easy way or privileges to install net-tools like netstat or ss. "0A" is the code for listen state. The IP hex is reverse order and all in hex format. Show Sample Output
2cat /proc/net/tcp | grep " 0A " | sed 's/^[^:]*: \(..\)\(..\)\(..\)\(..\):\(....\).*/echo $((0x\4)).$((0x\3)).$((0x\2)).$((0x\1)):$((0x\5))/g' | bash -
Parse an m3u file with seconds for each item and output the length of the entire playlist Show Sample Output
1awk -F":|," '{RS="#"; sec+=$2}END{h=(sec/3600);m=((sec/60) % 60);s=(s;printf("%02d:%02d:%02d\n", h, m, s)}' file.m3u -
For each *.jpg or *.JPG file in the current directory, extract the date the photo was taken from its EXIF metadata. Then replace the date stamp, which is assumed to exist in the filename, by the date the photo was taken. A trick from https://unix.stackexchange.com/a/9256 is used to split the date into its components. Show Sample Output
0(IFS=': '; for i in *.(#i)jpg; do set $(exiv2 -K 'Exif.Image.DateTime' -Pv $i 2> /dev/null); mv -v $i "$1-$2-$3${i#[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]}"; done) -
Generates a TV noise alike output in the terminal. Can be combined with https://www.commandlinefu.com/commands/view/9728/make-some-powerful-pink-noise
7while true;do printf "$(awk -v c="$(tput cols)" -v s="$RANDOM" 'BEGIN{srand(s);while(--c>=0){printf("\xe2\x96\\%s",sprintf("%o",150+int(10*rand())));}}')";done -
Check if port is open, if you don't have ncat on your machine. Show Sample Output
6echo > /dev/tcp/127.0.0.123/8085 && echo "Port is open" - ‹ First < 6 7 8 9 10 > Last ›
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