Commands using date sorted by votes

Commands using date (199)

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StopWatch, toilet version, amazing format inside terminal

already described on the other two versions, this one uses ascii characters on game style to display elapsed time. Show Sample Output
This is sample output - yours may be different.
```
  _ \    _ \     ___ \  ___ /      |  |  ___|
 |   |  |   | _)    ) |   _ \  _)  |  |  __ \
 |   |  |   |      __/     ) |    ___ __|  ) |
\___/  \___/  _) _____| ____/  _)    _| ____/
```
0

export I=$(date +%s); watch -t -n 1 'T=$(date +%s);E=$(($T-$I));hours=$((E / 3600)) ; seconds=$((E % 3600)) ; minutes=$((seconds / 60)) ; seconds=$((seconds % 60)) ; echo $(printf "%02d:%02d:%02d" $hours $minutes $seconds) | toilet -f shadow'

m33600 · 2009-10-23 07:56:30 10
Poor man's ntpdate

Good when firewalled and only in need of a reasonable accurate time. Use a fast responding web server.
This is sample output - yours may be different.
0

date -s "$(echo -e "HEAD / HTTP/1.0\n" | nc www.example.com 80 | sed -ne 's/^Date: $.*$$/\1/p')"

tomhol · 2010-01-08 20:05:00 9
Bash function to see what the day ends in

A command to find out what the day ends in. Can be edited slightly to find out what "any" output ends in. NB: I haven't tested with weird and wonderful output. Show Sample Output
This is sample output - yours may be different.
```
y
```
0

date +%A | cut -c $(( $(date +%A | wc -c) - 1 ))

DaveQB · 2010-04-07 00:23:15 5
Create a log file of Nvidia graphics card temperatures using nvidia-smi
This is sample output - yours may be different.
0

logfile=/var/log/gputemp.log; timestamp=$( date +%T );temps=$(nvidia-smi -lsa | grep Temperature | awk -F: ' { print $2 } '| cut -c2-4 | tr "\n" " ");echo "${timestamp} ${temps}" >> ${logfile}

purehate · 2010-05-28 10:14:47 6
solaris: get seconds since epoch
This is sample output - yours may be different.
0

truss date 2>&1 | awk '/^time/{print $3}'

winky · 2010-07-29 07:26:11 5
backup mysql database

Create a cronjob that runs weekly to backup your database to a file.
This is sample output - yours may be different.
0

0 0 * * 0 /usr/bin/mysqldump -uroot -p'<password>' data_base_name > /home/bob/XYZ_DB_BACKUP/$(date +\%Y-\%m-\%d_\%Hh\%M).sql

dtolj · 2010-09-02 20:07:07 4
Timezone conversions (eg: what time was @tz_dest when it was $tm @tz_orig)
This is sample output - yours may be different.
0

TZ="$tz_dest" date -d "$(TZ="$tz_orig" date -d "$tm")"

warlockcc · 2010-10-01 17:55:04 4
Binary clock

Lightweight alternative with case Show Sample Output
This is sample output - yours may be different.
```
...*
...*
.*.*
.**.
```
0

for a in $(date +"%H%M"|cut -b1,2,3,4 --output-delimiter=" ");do case "$a" in 0)echo "....";;1)echo "...*";;2)echo "..*.";;3)echo "..**";;4)echo ".*..";;5)echo ".*.*";;6)echo ".**.";;7)echo ".***";;8)echo "*...";;9)echo "*..*";;esac;done

unefunge · 2010-11-26 10:58:22 4
Backup a file with a date-time stamp

"infix" version in bash (4.x+) Remove -v to make it silent. BTW: The OP forgot to use "cat" and "nmap" ;-) I had a good laugh though. Show Sample Output
This is sample output - yours may be different.
```
$ buf a.txt
`a.txt' -> `a-20101215_104638.txt'
$ buf a.txt.gz
`a.txt.gz' -> `a-20101215_104647.txt.gz'
```
0

buf() { f=${1%%.*};e=${1/$f/};cp -v $1 $f-$(date +"%Y%m%d_%H%M%S")$e;}

unefunge · 2010-12-15 09:50:04 3
Backup a file with a date-time stamp

even shorter (infix) version. Show Sample Output
This is sample output - yours may be different.
```
$ buf() { cp -v $1 ${1/${1%%.*}/$f-$(date +"%Y%m%d_%H%M%S")};}
$ buf a.txt
`a.txt' -> `a-20101215_131256.txt'
$ buf a.txt.gz
`a.txt.gz' -> `a-20101215_131305.txt.gz'
```
0

buf() { cp -v $1 ${1/${1%%.*}/$f-$(date +"%Y%m%d_%H%M%S")};}

unefunge · 2010-12-15 12:16:03 3
What happened on this day in history?
This is sample output - yours may be different.
0

firefox http://en.wikipedia.org/wiki/$(date +'%b_%d')

dbh · 2011-05-08 03:36:11 3
What happened on this day in history?

Improved version of command #8425. This way, the default browser is used, as opposed to Firefox.
This is sample output - yours may be different.
0

www-browser http://en.wikipedia.org/wiki/$(date +'%b_%d')

benjabean1 · 2011-05-09 02:42:32 3
Synchronize date and time with a server over ssh

Neat idea! This variation works on FreeBSD.
This is sample output - yours may be different.
0

date `ssh user@server date "+%y%m%d%H%M.%S"`

wu · 2011-08-30 22:32:14 3
solaris: get current date + 72 hours
This is sample output - yours may be different.
0

TZ=$TZ-72 date +%d.%m.%Y

winky · 2011-09-07 14:03:09 3
Hunt for the newest file.
This is sample output - yours may be different.
0

fn=$(find . -type f -printf "%T@\t%p\n"|sort -n|tail -1|cut -f2); echo $(date -r "$fn") "$fn"

tzot · 2011-09-13 14:26:20 3
anti-spam
This is sample output - yours may be different.
0

date -u +%W$(uname)|sha256sum|sed 's/\W//g'

martinmartiini · 2011-09-25 14:41:49 3
Get the time and date of the last server reboot
This is sample output - yours may be different.
0

date -d "$(uptime | awk '{gsub(/,/,"",$3);gsub(/:/," hours ",$3); print "- " $3 " minutes"}')"

unixmonkey3280 · 2011-10-20 06:46:31 6
Knowing when a machine is turned on
This is sample output - yours may be different.
0

date -d @$(echo $(($(date +%s)-$(cat /proc/uptime|cut -d. -f1))))

RuizTapiador · 2011-11-04 12:58:27 4
Epoch time conversion

0x Show Sample Output
This is sample output - yours may be different.
```
Wed Feb 1 12:41:50 JST 2012
```
0

echo $(date -d @$((0x4f28b47e)))

h_nose · 2012-02-07 11:14:08 15
command to find when the last commit has happened from the server

command to find out the unused SVN repositories from the server via svnlook. This lists the when the last commit (HEAD revision) has happened in the repository. Show Sample Output
This is sample output - yours may be different.
```
$ svnlook date /repos/testrepo/
2012-03-30 20:31:43 +0530 (Fri, 30 Mar 2012)
```
0

svnlook date /path/to/repo

ijeyanthan · 2012-04-03 16:29:00 6
Get the date for the last Saturday of a given month

Choosing your year and month. You only need the gnu date command and bash. desiredDay of the week is (1..7); 1 is Monday. If you want desiredDay of week (0..6); 0 is Sunday desiredDay=6; year=2012; month=5; n=0; while [ $(date -d "$year-$((month+1))-1 - $n day" "+%w") -ne $desiredDay ]; do n=$((n+1)); done; date -d "$year-$((month+1))-1 - $n day" "+%x" Show Sample Output
This is sample output - yours may be different.
```
05/26/2012
```
0

desiredDay=6; year=2012; month=5; n=0; while [ $(date -d "$year-$((month+1))-1 - $n day" "+%u") -ne $desiredDay ]; do n=$((n+1)); done; date -d "$year-$((month+1))-1 - $n day" "+%x"

ClashTheBunny · 2012-05-17 12:02:30 3
Dump TCP traffic to a host into a text and pcap file
This is sample output - yours may be different.
0

ngrep host 192.168.1.6 -O $(date +%Y%m%d_%H%M%S).pcap > $(date +%Y%m%d_%H%M%S).txt

batandwa · 2012-10-03 13:09:19 5
Get the UTC offset

Format of the response: [-]HH:mm Show Sample Output
This is sample output - yours may be different.
```
$ date +%:z
-03:00
```
0

date +%:z

harpon · 2012-10-15 18:13:37 4
quick and easy way of validating a date format of yyyy-mm-dd and returning a boolean

On CentOS at least, date returns a boolean for the common date string formats, including YYYY-MM-DD. In the sample output, you can see various invalid dates returning 0 whereas a simple regex check would return 1 for the invalid dates. -d, --date=STRING display time described by STRING, not `now' The version of date on OS X does not appear to have this same option. Show Sample Output
This is sample output - yours may be different.
```
# if date -d 2006-10-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi
1

# if date -d 2006-40-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi
0

# if date -d 2006-13-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi
0

# if date -d 2006-11-31 >> /dev/null 2>&1; then echo 1; else echo 0; fi
0
```
0

if date -d 2006-10-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi

SteveGoossens · 2013-01-10 10:35:15 7
backup your history

this one works on user crontab
This is sample output - yours may be different.
0

gzip -c ~/.bash_history > ~/.backup/history-save-$(date +\%d-\%m-\%y-\%T).gz

tictacbum · 2013-01-11 17:31:07 4
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Mount an smb share on linux

Mount an smb share with this command. other options -ousername=$USERr,gid=$groupname,scope=rw

Use the arguments used in the last command

Very basic, but who knows.. mkdir !$ should work too, only uses 'the last' argument. !-2 executes cd Desktop/Notes again. More tips in 'man history'

Execute a command with a timeout

I like much more the perl solution, but without using perl. It launches a backgroup process that will kill the command if it lasts too much. A bigger function: check_with_timeout() { [ "$DEBUG" ] && set -x COMMAND=$1 TIMEOUT=$2 RET=0 # Launch command in backgroup [ ! "$DEBUG" ] && exec 6>&2 # Link file descriptor #6 with stderr. [ ! "$DEBUG" ] && exec 2> /dev/null # Send stderr to null (avoid the Terminated messages) $COMMAND 2>&1 >/dev/null & COMMAND_PID=$! [ "$DEBUG" ] && echo "Background command pid $COMMAND_PID, parent pid $$" # Timer that will kill the command if timesout sleep $TIMEOUT && ps -p $COMMAND_PID -o pid,ppid |grep $$ | awk '{print $1}' | xargs kill & KILLER_PID=$! [ "$DEBUG" ] && echo "Killer command pid $KILLER_PID, parent pid $$" wait $COMMAND_PID RET=$? # Kill the killer timer [ "$DEBUG" ] && ps -e -o pid,ppid |grep $KILLER_PID | awk '{print $1}' | xargs echo "Killing processes: " ps -e -o pid,ppid |grep -v PID | grep $KILLER_PID | awk '{print $1}' | xargs kill wait sleep 1 [ ! "$DEBUG" ] && exec 2>&6 6>&- # Restore stderr and close file descriptor #6. return $RET }

cpu info

randomize hostname and mac address, force dhcp renew. (for anonymous networking)

this string of commands will release your dhcp address, change your mac address, generate a new random hostname and then get a new dhcp lease.

Create a listing of all possible permissions and their octal representation.

strip non-constant number of directories from tar archive while decompressing

If you want to decompress the files from an archive to current directory by stripping all directory paths, use --transform option to strip path information. Unfortunately, --strip-components option is good if the target files have same and constant depth of folders. The idea was taken from http://www.unix.com/solaris/145941-how-extract-files-tar-file-without-creating-directories.html

list block devices

Shows all block devices in a tree with descruptions of what they are.

Get length of current playlist in xmms2

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

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Commands using date (199) the last day the last week the last month all time sorted by date votes

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Commands using date (199)

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