All commands (14,187)
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prints out the time for the timezone specified in $offsetutc. So you have less to think about things like: "I'm in utc+4 and my friend in utc-7, can I call him now or will I wake him?" Note: $offsetutc should be an integer between -12 and 12. Show Sample Output
0let utime=$offsetutc*3600+$(date --utc +%s)+3600; date --utc --date=@${utime} -
sends commands specified in $commandfile to the telnet-server specified by $telnetserver. to have newlines in $commandfile interpreted as ENTER, save the file in CR+LF (aka "Windows-Textfile") format. if you want to save the output in a separate file, use:
nc $telnetserver 23 < $commandfile > $resultfile1nc $telnetserver 23 < $commandfile -
-2wget http://checkip.dyndns.org && clear && echo && echo My IP && egrep -o '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}' index.html && echo && rm index.html
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extracts the debian-package $debfile to $extractdir, including all packaging-information. to repack the package, just type:
dpkg-deb -b $extractdir1dpkg-deb -x $debfile $extractdir; dpkg-deb -e $debfile $extractdir/DEBIAN; -
1sudo du -sh $(ls -d */) 2> /dev/null
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I use this in a script on my openwrt router to check if my DynDNS needs to be updated, saves your account from being banned for blank updates. Show Sample Output
1nslookup commandlinefu.com|sed 's/[^0-9. ]//g'|tail -n 1|awk -F " " '{print $2}' -
Same as original just no $ at start
5ssh-copy-id user@host -
Strips the non-ip information from the dig output. Could be combined with "head -1" to ensure a single ip is returned. Useful for outputting as a variable for use in scripts. Show Sample Output
0dig commandlinefu.com | sed -nr 's/^[^;].*?\s([.0-9]{7,15})$/\1/ p' -
A similar command that lists only the currently running VMs is thus:
VBoxManage list runningvms...the above showing a list of VMs by name and UUID in the same format as the "$ VBoxManage list vms" command Show Sample Output3VBoxManage list vms -
you can launch a VirtualBox VM from the command line using VBoxManage, but that invokes it in a gui environment. If you want to just fire off your VM in the background, use VBoxHeadless as shown. To get the names and UUIDs of your VirtualBox VMs, type:
VBoxManage list5VBoxHeadless -s <name|uuid> -
Gets the internal and external IP addresses of all your interfaces, or the ones given as arguments Show Sample Output
-3ips(){ for if in ${1:-$(ip link list|grep '^.: '|cut -d\ -f2|cut -d: -f1)};do cur=$(ifconfig $if|grep "inet addr"|sed 's/.*inet addr:\([0-9\.]*\).*/\1/g');printf '%-5s%-15s%-15s\n' $if $cur $(nc -s $cur sine.cluenet.org 128 2>/dev/null||echo $cur);done;} -
5perl -ne 'split /,/ ; $a+= $_[3]; END {print $a."\n";}' -f ./file.csv
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Generates password consisting of alphanumeric characters, defaults to 16 characters unless argument given. Show Sample Output
3randpw(){ < /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-16};echo;} -
-n 9000 : Number of requests to perform for the benchmarking session -c 900 : Number of multiple requests to perform at a time Show Sample Output
10ab -n 9000 -c 900 localhost:8080/index.php -
5cd `dirname $_`
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0dd if=/dev/urandom count=200 bs=1 2>/dev/null | tr "\n" " " | sed 's/[^a-zA-Z0-9]//g' | cut -c-16
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Uses the last argument of the last executed command, and gets the directory name from it. Use $!:t for the filename alone, without the dirname. Show Sample Output
25cd !$:h -
34for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
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Use the command watch, which is really hard to pass nested quotes to, and insert newlines where they are supposed to go in the HTTP request. that is after 1.1 after the host and two newlines at the end before the EOF. i use this all day what? no support for HEREDOCs on commandlinefu's interface? need more fu. Show Sample Output
1watch -n 1 nc localhost 80 '<<EOF GET / HTTP/1.1 Host: tux-ninja Connection: Close EOF' -
If you want certain files out of a directory hierarchy, this will copy just the listed files, but will create the directory hierarchy in the new location ($DIR/)
0cat files.txt | xargs tar -cv | tar -x -c $DIR/ -
Will return your internal IP address. Show Sample Output
4ifconfig $devices | grep "inet addr" | sed 's/.*inet addr:\([0-9\.]*\).*/\1/g' -
This command uses the recursive glob and glob qualifiers from zsh. This will remove all the empty directories from the current directory down. The **/* recurses down through all the files and directories The glob qualifiers are added into the parenthesis. The / means only directories. The F means 'full' directories, and the ^ reverses that to mean non-full directories. For more info on these qualifiers see the zsh docs: http://zsh.dotsrc.org/Doc/Release/Expansion.html#SEC87
5rm -d **/*(/^F) -
-7find . -name "-help" -exec mv {} help.txt \;
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0sudo snmptrap -m ALL -v 2c -c public trapserver "" UCD-DEMO-MIB::ucdDemoPublic SNMPv2-MIB::sysLocation.0 s "Just here"
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It will create a backup of the filename. The advantage is that if you list the folder the backups will be sorted by date. The command works on any unix in bash. Show Sample Output
1cp path/filename{,-$(date +%Y-%m-%d)} - ‹ First < 467 468 469 470 471 > Last ›
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