All commands (14,187)
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With this command you can convert a tab separate file (TSV) into a JSON file with jq. For example, this input.tsv i-0b9adca882e5e6326 172.16.0.188 i-088dd69e5c3624888 172.16.0.102 i-0e70eac180537d4aa 172.16.0.85 will produce the showed output. Show Sample Output
2cat input.tsv | jq --raw-input --slurp 'split("\n") | map(split("\t")) | .[0:-1] | map( { "id": .[0], "ip": .[1] } )' -
It displays the top 10 processes sorted by memory usage Show Sample Output
3ps aux | sort -rk 4,4 | head -n 10 -
Copy this function to command line, press 'Enter' 'f'' 'Enter' to execute (sentence on the left written only for newbies). Hint 'e|x|v|1..9' in front of displayed last modified file name means: "Press 'e' for edit,'x' for execute,'v' for view or a digit-key '1..9' to touch one file from the recent files list to be last modified" and suggested (hidden files are listed too, else remove 'a' from 'ls -tarp' statement if not intended). If you find this function useful you can then rename it if needed and append or include into your ~/.bashrc config script. With the command
. ~/.bashrcthe function then can be made immediately available. In the body of the function modifications can be made, i.e. replaced joe editor command or added new option into case statement, for example 'o) exo-open $h;;' command for opening file with default application - or something else (here could not be added since the function would exceed 255 chars). To cancel execution of function started is no need to press Ctrl-C - if the mind changed and want to leave simple Enter-press is enough. Once defined, this function can withtypeset -f fcommand be displayed in easy readable form Show Sample Output2f() { ls -lart;e="ls -tarp|grep -v /|tail -9";j=${e/9/1};g=${e/9/9|nl -nln};h=$(eval $j);eval $g;read -p "e|x|v|1..9 $(eval $j)?" -n 1 -r;case $REPLY in e) joe $h;;v)cat $h;;x) eval $h;;[1-9]) s=$(eval $g|egrep ^$REPLY) && touch "${s:7}" && f;;esac ; } -
The command finds every item within the directory and edits the output so that subdirectories are and files are output much like the tree command Show Sample Output
3find . -print | sed -e 's;[^/]*/;|-- ;g;s;-- |; |;g' -
-2$ sudo systemctl restart bluetooth
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as a shell script, the possibilities are endless... #!/bin/bash echo doing something very evil! exit [2Aecho doing something very nice! Show Sample Output
-2echo 'doing something very evil' >/dev/null && echo doing something very nice! -
In this example, I’m creating a wrapper for apt-get that assumes yes every time — but the command could be anything.
0sudo su -c “echo -e \”\x23\x21/usr/bin/sudo /bin/bash\napt-get -y \x24\x40\” > /usr/bin/apt-yes” -
If your `date` command has `-r` option, you don't need `stat`
3cp file{,.$(date -r file "+%y%m%d")} -
Writes hybrid ISO directly to USB stick; replace /dev/sdb with USB device in question and the ISO image link with the link of your choice
4wget -O /dev/sdb https://cdimage.ubuntu.com/daily-live/current/eoan-desktop-amd64.iso -
4diff <(tree /dir/one) <(tree /dir/two)
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0(read -r passphrase; b58encode 80$( brainwallet_exponent "$passphrase" )$( brainwallet_checksum "$passphrase" ))
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--delete will delete copies on remote to match local if deleted on local --stats will output the results -z zip -a archive -A preserve ACL -x don't cross filesystem boundaries -h human readable -e specify the remote shell to use
2rsync --delete --stats -zaAxh -e ssh /local_directory/ username@IP_of_remote:/Remote_Directory/ > /Text_file_Directory/backuplog.txt -
AWS provides a method to audit for obsolete AWS security groups. From their documentation: "Describes the stale security group rules for security groups in a specified VPC. Rules are stale when they reference a deleted security group in a peer VPC, or a security group in a peer VPC for which the VPC peering connection has been deleted." Show Sample Output
0aws ec2 describe-vpcs --query 'Vpcs[*].VpcId' --output text |xargs -t -n1 aws ec2 describe-stale-security-groups --vpc-id -
1cp file{,.$(date -d @$(stat -c '%Y' file) "+%y%m%d")}
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7watch -n 1 'ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head'
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Change video orientation in metadata only
2ffmpeg -i in.mov -c copy -metadata:s:v:0 rotate=90 out.mov -
2curl -fSs https://1.1.1.1/cdn-cgi/trace | awk -F= '/ip/ { print $2 }'
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scan whole specific network for active online ips Show Sample Output
8nmap -n -sn 192.168.1.0/24 -oG - | awk '/Up$/{print $2}' -
spectrum protect's dsmc command shows file names and total amount of restore. This command shows which files are actually open and their siz in GB and highlights the change to the previous output Show Sample Output
1watch -n60 -d 'lsof -w /filesysname|grep -v NAME|awk '\''{$7=int($7/1073741824) " GB"; print $7, $9}'\''' -
Transpose parameter: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip
-1ffmpeg -i in.mov -vf "transpose=1" out.mov -
0curl checkip.amazonaws.com
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Derived from current time down to minutes. Show Sample Output
1DATE=`date +"%y%m%d%H%M"`; CHECKSUM=`printf "%02d" $((DATE%97))`; echo $DATE$CHECKSUM |sed -e 's#\([0-9]\{3\}\)\([0-9]\{4\}\)\([0-9]\{5\}\)#+++\1/\2/\3+++#' -
Use xargs command to make one line.
0dpkg --get-selections | grep -Evw 'deinstall$' | cut -f1 | sort -u | xargs -
This command lists all currently installed packages in ubuntu in a single line, for example to use later with apt install. Show Sample Output
0dpkg --get-selections | grep -v deinstall | sort -u | cut -f 1 | tr '\r\n' ' ' | sed '$s/ $/\n/' -
1parallel -j200% -n1 -a textfile-with-hosts.txt nc -vz {} ::: 22
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