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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send a circular

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Rename files in batch

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Show permissions of current directory and all directories upwards to /

Useful if a different user cannot access some directory and you want to know which directory on the way misses the x bit.

Find the package that installed a command

Automatically rename tmux window using the current working directory

Adds a function that runs every time the prompt is rendered. The function grabs the CWD from PWD and issues a command to tmux to change the current window

Function to check whether a regular file ends with a newline

tail -c 1 "$1" returns the last byte in the file. Command substitution deletes any trailing newlines, so if the file ended in a newline $(tail -c 1 "$1") is now empty, and the -z test succeeds. However, $a will also be empty for an empty file, so we add -s "$1" to check that the file has a size greater than zero. Finally, -f "$1" checks that the file is a regular file -- not a directory or a socket, etc.

Drop all tables from a database, without deleting it

Uses two comands, requieres mysqldump, but works as expected.

ASCII art of yourself

Use libcaca to render ascii chars on the webcam input... or don't.

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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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