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Commands tagged date from sorted by
Terminal - Commands tagged date - 100 results
function ends_in_y() { if [ `date +%A | sed -e 's/\(^.*\)\(.$\)/\2/'` == "y" ]; then echo 1; else echo 0; fi }
2010-04-06 20:14:34
User: allrightname
Functions: echo sed

For those days when you need to know if something is happening because the day ends in "y".

sed -i 's/20[0-1][0-9]\{7\}/'`date +%Y%m%d%I`'/g' *.db
2010-03-24 07:28:58
User: alf
Functions: sed

Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc.

Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this.

Make sure your server's date is correct, otherwise insert your own serial number.

rndc reload

should usually follow this command.

date -j -v1d -v-0m -v-1d +'%m %d %Y'
2010-03-04 17:47:51
User: drewk
Functions: date

This produces a parseable output of the last day of the month in future or past. Change the '-v-0m' to be a month plus or minus from the current system time.

date -s "`curl -sI www.example.com | sed -n 's/^Date: //p'`"
2010-01-08 21:05:41
User: putnamhill
Functions: date
Tags: curl date

If you don't have netcat, you can use curl.

date -s "$(echo -e "HEAD / HTTP/1.0\n" | nc www.example.com 80 | sed -ne 's/^Date: \(.*\)$/\1/p')"
2010-01-08 20:05:00
User: tomhol
Functions: date
Tags: date

Good when firewalled and only in need of a reasonable accurate time.

Use a fast responding web server.

xvkbd -xsendevent -text $(date +%Y%m%d)
2009-12-23 12:01:07
User: sputnick
Functions: date

That works in all softs, CLI or GUI... I don't want to waste time to all the time typing the same stuff . So, I have that command in my window manager shortcuts ( meta+l ). All the window managers have editable shortcuts AFAIK. If not, or you don't want to use it that way, you can easily use the xbindkeys soft.

I you're using kde4, you can run :


then open "inputs actions" and create a new shortcut.

For Gnome take a look there : http://www.cyberciti.biz/faq/howto-create-keyboard-shortcuts-in-gnome/

A more advanced one, with strings and newlines :

xvkbd -xsendevent -text "---8<-----\nToday date is: $(date +%Y%m%d)\n---8<-----"

For complicated or long paste, you can feed xvkbd with a file :

xvkbd -xsendevent -file <file>

You can simulate ^C ( control+c ) too or others combinations of keys :

xvkbd -text "\C\Ac"

There's no man page nor help ( On my Archlinux distro ), but you can see online doc there : http://homepage3.nifty.com/tsato/xvkbd/

curl -o id.gif `date +http://d.yimg.com/a/p/uc/%Y%m%d/largeimagecrwiz%y%m%d.gif`
2009-12-04 20:16:32
User: putnamhill
Tags: curl date

Requires the date command. This also works with some other comics. Here's a bash script that displays daily Garfield, Id, and Andy Capp:


ruby -rdate -e 'p DateTime.now.cweek'
date +%V
ruby -e 'require "date"; puts DateTime.now.cweek'
perl -e 'use Date::Calc qw(Today Week_Number); $weekn = Week_Number(Today); print "$weekn\n"'
backup() { for i in "$@"; do cp -va $i $i.$(date +%Y%m%d-%H%M%S); done }
2009-11-10 20:59:45
User: polaco
Functions: cp date
Tags: backup copy date

This script creates date based backups of the files. It copies the files to the same place the original ones are but with an additional extension that is the timestamp of the copy on the following format: YearMonthDay-HourMinuteSecond

utime(){ perl -e "print localtime($1).\"\n\"";}
2009-11-06 12:58:10
User: MoHaG
Functions: perl

A shell function using perl to easily convert Unix-time to text.

Put in in your ~/.bashrc or equivalent.

Tested on Linux / Solaris Bourne, bash and zsh. using perl 5.6 and higher.

(Does not require GNU date like some other commands)

perl -e 'print scalar(gmtime(1234567890)), "\n"'
echo "0t${currentEpoch}=Y" | /usr/bin/adb
2009-08-25 12:17:01
User: verboEse
Functions: echo

this works on Solaris, so not better than the "only-GNU"-tool :-(

I think, there is no one-liner for this, that will work on all *nix-es

git diff --numstat -w --no-abbrev | perl -a -ne '$F[0] != 0 && $F[1] !=0 && print $F[2] . "\n";'
2009-08-19 05:07:58
User: lingo
Functions: diff perl

Only shows files with actual changes to text (excluding whitespace). Useful if you've messed up permissions or transferred in files from windows or something like that, so that you can get a list of changed files, and clean up the rest.

curl http://www.commandlinefu.com/commands/by/<your username>/rss|gzip ->commandlinefu-contribs-backup-$(date +%Y-%m-%d-%H.%M.%S).rss.gz
2009-08-10 12:43:33
Functions: date gzip

Use `zless` to read the content of your *rss.gz file:

zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz
date --date="$(openssl x509 -in xxxxxx.crt -noout -startdate | cut -d= -f 2)" --iso-8601
2009-07-23 23:24:33
User: rez0r
Functions: date

A quick and simple way of outputting the start and end date of a certificate, you can simply use 'openssl x509 -in xxxxxx.crt -noout -enddate' to output the end date (ex. notAfter=Feb 01 11:30:32 2009 GMT) and with the date command you format the output to an ISO format.

For the start date use the switch -startdate and for end date use -enddate.

watch -t -n1 "date +%T|figlet"
2009-06-21 01:02:37
User: dennisw
Functions: watch

This command displays a clock on your terminal which updates the time every second. Press Ctrl-C to exit.

A couple of variants:

A little bit bigger text:

watch -t -n1 "date +%T|figlet -f big"

You can try other figlet fonts, too.

Big sideways characters:

watch -n 1 -t '/usr/games/banner -w 30 $(date +%M:%S)'

This requires a particular version of banner and a 40-line terminal or you can adjust the width ("30" here).

echo 2006-10-10 | grep -c '^[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]$'
2009-05-11 22:18:43
User: rez0r
Functions: echo grep

Quick and easy way of validating a date format of yyyy-mm-dd and returning a boolean, the regex can easily be upgraded to handle "in betweens" for mm dd or to validate other types of strings, ex. ip address.

Boolean output could easily be piped into a condition for a more complete one-liner.

mkdir $(date +%Y%m%d)
2009-04-25 14:16:45
User: thebodzio
Functions: date mkdir
Tags: alias date mkdir

Not a discovery but a useful one nontheless.

In the above example date format is 'yyyymmdd'. For other possible formats see 'man date'.

This command can be also very convenient when aliased to some meaningful name:

alias mkdd='mkdir $(date +%Y%m%d)'
cal 09 1752
2009-04-22 00:13:19
User: flux
Functions: cal
Tags: date fun

The British Government entering in the Gregorian era.

date -d@1234567890
2009-04-11 22:26:41
User: kFiddle
Functions: date
Tags: date

This example, for example, produces the output, "Fri Feb 13 15:26:30 EST 2009"

echo $( (( $( (2**31 -1) ) - $(date +%s) )) )
2009-04-02 05:14:23
User: Chartreuse
Functions: date echo
Tags: bash echo date

Echos the number of seconds from the current time till the specified time (Example in command is (2**31-1)) aka the Unix epoch. Just replace that number with the specified date (in seconds past Jan. 1st 1970) and it will return the seconds.

NOTE: Only works in bash

watch -tn1 'bc<<<"`date -d'\''friday 21:00'\'' +%s`-`date +%s`"|perl -ne'\''@p=gmtime($_);printf("%dd %02d:%02d:%02d\n",@p[7,2,1,0]);'\'
2009-03-29 19:53:36
User: penpen
Functions: perl watch
Tags: Linux unix date

An improved version of http://www.commandlinefu.com/commands/view/1772/simple-countdown-from-a-given-date that uses Perl to pretty-print the output. Note that the GNU-style '--no-title' option has been replaced by its one-letter counterpart '-t'.