All commands (14,043)
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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
-1echo '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 "$passphrase" ))
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--delete will delete copies on remote to match local if deleted on local --stats will output the results -z zip -a archive -A preserve ACL -x don't cross filesystem boundaries -h human readable -e specify the remote shell to use
2rsync --delete --stats -zaAxh -e ssh /local_directory/ [email protected]_of_remote:/Remote_Directory/ > /Text_file_Directory/backuplog.txt -
AWS provides a method to audit for obsolete AWS security groups. From their documentation: "Describes the stale security group rules for security groups in a specified VPC. Rules are stale when they reference a deleted security group in a peer VPC, or a security group in a peer VPC for which the VPC peering connection has been deleted." Show Sample Output
0aws ec2 describe-vpcs --query 'Vpcs[*].VpcId' --output text |xargs -t -n1 aws ec2 describe-stale-security-groups --vpc-id -
1cp file{,.$(date -d @$(stat -c '%Y' file) "+%y%m%d")}
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6watch -n 1 'ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head'
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Change video orientation in metadata only
1ffmpeg -i in.mov -c copy -metadata:s:v:0 rotate=90 out.mov -
1curl -fSs https://1.1.1.1/cdn-cgi/trace | awk -F= '/ip/ { print $2 }'
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scan whole specific network for active online ips Show Sample Output
6nmap -n -sn 192.168.1.0/24 -oG - | awk '/Up$/{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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-1xargs -i -P 1200 nc -zvn {} 22 < textfile-with-hosts.txt
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include in the list human readable hidden files too:
file .* *|grep 'ASCII text'|sort -rk2more reliable command:ls|xargs file|grep 'ASCII text'|sort -rk2and include hidden files:ls -a|xargs file|grep 'ASCII text'|sort -rk21file *|grep 'ASCII text'|sort -rk2 -
GNU grep's PCRE(Perl-compatible regular expressions).
1grep -Po '^(.*?:\K)?.*' -
Delete the beginning of each line until first match of given character, in this case it's ":" Does it on all lines. The given character is deleted also, and can be a space.
0sed 's/^[^:]*://g' -
1convmv --lower --notest FILE
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