All commands (12,698)
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Useful when developing and you donut usually have other docker commands running Show Sample Output
0docker kill $(docker ps -q) -
0(nohup your-command your-args &>/dev/null &)
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(echo "https://example.com/"; echo "https://example.com/"; echo "https://example.com/"; echo "https://example.com/") | parallel -k 'ab -n 10000 -c 15 {}'
0cat url_list.txt | parallel -k 'ab -n 10000 -c 15 {}' -
0sudo tcpdump -i lo -nv ip
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man NetworkManager.conf ... none: NetworkManager will not modify resolv.conf. This implies rc-manager unmanaged Show Sample Output
0f="/etc/NetworkManager/NetworkManager.conf"; if ! grep ^dns $f > /dev/null; then sudo sed -i.bkp '/\[main\]/a dns=none' $f; fi -
-z, --without-gui -j, --export-id-only -i, --export-id=ID -l, --export-plain-svg=FILENAME In Inkscape Press Ctrl-Shift-o to open object properties panel to give ID to a selected element
0inkscape project.svg -z -j -i icon.svg -l b.svg -
# 4 cores with 2500 pi digitsCPUBENCH 4 2500.every core will use 100% cpu and you can see how fast they calculate it.if you do 50000 digitits and more it can take hours or daysShow Sample Output0CPUBENCH() { local CPU="${1:-1}"; local SCALE="${2:-5000}"; { for LOOP in `seq 1 $CPU`; do { time echo "scale=${SCALE}; 4*a(1)" | bc -l -q | grep -v ^"[0-9]" & } ; done }; echo "Cores: $CPU"; echo "Digit: $SCALE" ;} -
0find /var/www/ -type f -name '*.[jJ][pP][gG]' -print0 | xargs -n 1 -P 8 -0 jpegoptim --strip-all --preserve --preserve-perms --quiet
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0find /var/www/ -type f -name '*.[pP][nN][gG]' -print0 | xargs -L 1 -n 1 -P 8 -0 optipng -preserve -quiet -o7 -f4 -strip all
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Explanation It creates dnsmasq-com-blackhole.conf file with one line to route all domains of com zones to 0.0.0.0 You might use "address=/home.lab/127.0.0.1" to point allpossiblesubdomains.home.lab to your localhost or some other IP in a cloud. Show Sample Output
0echo "address=/com/0.0.0.0" | sudo tee /etc/dnsmasq.d/dnsmasq-com-blackhole.conf && sudo systemctl restart dnsmasq -
The while loop is an overkill, it would be simpler to prevent the file to be modified. That said, none of the proposed solutions are such: a real one would go to the source of the problem.
-1chkmod -w /etc/resolve.conf -
runs in background rewriting /etc/resolv.conf periodically
dns-2while sudo sed -i -e 's/^\(nameserver\).*$/\1 $dns/' /etc/resolv.conf; do sleep 15; done & -
a quick function for searching changed files. just copy it in the bash Show Sample Output
0FINDDATE() { LOCATION="${1:-.}"; find ${LOCATION} -type f -print0 | xargs -0 stat -c "%y %n" | sort | sed 's/.\([0-9]\)\{9,\} +0[1-2]00/\t/' | sed 's/ /\t/g' } -
Check whether hyperthreading is enabled or not. a better solution as nproc should work on all OS with awk Show Sample Output
1awk -F: '/^core id/ && !P[$2] { CORES++; P[$2]=1 }; /^physical id/ && !N[$2] { CPUs++; N[$2]=1 }; END { print CPUs*CORES }' /proc/cpuinfo -
0ls -tr ~/Downloads/*.pdf|tail -1
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this is good for variables if you have many script created files and if you want to know which one is the last created/changed one..
1find . -type f -print0 | xargs -0 stat -c '%y %n' | sort -n -k 1,1 -k 2,1 | awk 'END{print $NF}' -
This commando copies the file (which must reside in the current directory) to //<server>/<share-name>/<subdirectory>/<file> through the CIFS protocol (Samba share or Windows Share). It doesn't require you to mount the filesystem first. --directory "<subdirectory>" may be omitted in order to copy the file the the root of the share. The "%password" part may also be omitted. If doing so, smbclient will ask for the password interactively. To copy a file from a Windows/Samba share, change "put" for "get".
smbclient --user=user%password --directory "<subdirectory>" --command "get <file>" //<server>/<share-name>Show Sample Output1smbclient --user=user%password --directory "<subdirectory>" --command "put <file>" //<server>/<share-name> -
This appears to do the same. Utility is verified to be present on Ubuntu and OpenSuse out-of-the-box. Show Sample Output
2$ nproc -
Benchmark a SQL query against MySQL Server. The example runs the query 10 times, and you get the average runtime in the output. To ensure that the query does not get cached, use `RESET QUERY CACHE;` on top in the query file. Show Sample Output
0perf stat -r 10 sh -c "mysql > /dev/null < query.sql" -
Pipe any JSON to jq, then count with the appropiate expression and use the | length on the array
0echo '[1,2,3]' | jq '. | length' -
Get information of volume labels of bitlocker volumes, even if they are encrypted and locked (no access to filesystem, no password provided). Note that the volume labels can have spaces, but only if you name then before encryption. Renaming a bitlocker partition after being encrypted does not have the same effect as doing it before. Show Sample Output
2sudo echo "BitLocker Volume labels:" && sudo dislocker-find | xargs -I{} sh -c 'echo -n "{} ->+ " ; sudo dislocker-metadata -V {} | grep string' | sed 's/+.*string://' | sed "s/'[^ ]* /\"/g" | sed 's/\ [^ ]*$/"/' -
Shows all block devices in a tree with descruptions of what they are.
2sudo lsblk -o name,type,fstype,label,partlabel,model,mountpoint,size -
This version accounts for the MiB/KiB suffix output by pacman these days.
0pacman -Qi | grep 'Name\|Size\|Description' | cut -d: -f2 | paste - - - | awk -F'\t' 'BEGIN{ s["MiB"]=1024; s["KiB"]=1;} {split($3, a, " "); print a[1] * s[a[2]], "KiB", $1}' | sort -n -
0find -type f -name '*.jpg' -exec mogrify -quality 70% '{}' \;
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0while true; do sleep $((40 * 60)); echo "Fuck away for some time"; sleep $((3 * 60)); done &
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