Commands tagged date sorted by votes

Commands tagged date (119)

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Easily decode unix-time (funtion)
This is sample output - yours may be different.
0

utime(){ awk -v d=$1 'BEGIN{print strftime("%a %b %d %H:%M:%S %Y", d)}'; }

4Aiur · 2010-05-14 08:00:04 3
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
Greets the user appropriately

Saves all the "cut" hacks
This is sample output - yours may be different.
0

echo Good $(i=`date +%H` ; if [ $i -lt 12 ] ; then echo morning ; else if [ $i -lt 15 ] ; then echo afternoon ; else echo evening ; fi ; fi)

jyro · 2010-09-23 09:50:13 3
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
read squid logs with human-readable timestamp

The same with colors
This is sample output - yours may be different.
0

tail -f /var/log/squid/access.loc | ccze -CA

longdrink · 2011-07-15 14:58:53 5
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
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
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
Order all files oldest to newest then get the last one touched

On the Mac, the 'ls' function can sort based on month/day/time, but seems to lack ability to filter on the Year field (#9 among the long listed fields). The sorted list continuously increases the 'START' year for the most recently accessed set of files. The final month printed will be the highest month that appeared in that START year. The command does its magic on the current directory, and suitably discards all entries that are themselves directories. If you expect files dating prior to 2002, change the START year accordingly.
This is sample output - yours may be different.
0

ls -lT -rt | grep "^-" | awk 'BEGIN {START=2002} (START <= $9){ print $10 ;START=$9 }' | tail -1

Glamdring · 2013-02-24 23:39:22 7
Backup /etc directory

Back up /etc directory with a name based on the current date and the hostname of the machine, then chown the file for the current user for use.
This is sample output - yours may be different.
0

sudo tar -zcvf $(hostname)-etc-back-`date +%d`-`date +%m`-`date +%y`.tar.gz /etc && sudo chown $USER:$USER $(hostname)-etc-back*

thanosme · 2013-08-18 12:49:11 19
Synchronize date and time with a server over ssh (BusyBox-friendly)

Useful if localhost is a small machine running BusyBox, which uses a slightly unusual format to set the date. Remotehost can be pretty much any Linux machine, including one running BusyBox. Uses UTC for portability.
This is sample output - yours may be different.
0

date -u `ssh user@remotehost date -u '+%m%d%H%M%Y.%S'`

scruss · 2014-02-10 03:11:14 6
bash alias for date command that lets you create timestamps in ISO8601 format

This can be easier to look at in ls output. Not as clean as +%Y%m%dT%H%M%S, but quicker to write. Show Sample Output
This is sample output - yours may be different.
```
2014-03-05T22:31:04
```
0

alias t__s='date "+%FT%T"'

UncleLouie · 2014-03-06 04:37:55 6
Sysadmin day date of any given year

Calculate the date of Sysadmin day (last Friday of July) of any given year Show Sample Output
This is sample output - yours may be different.
```
Jul 31
```
0

YEAR=2015; ncal 7 $YEAR | sed -n 's/^Fr.* $[^ ]\+$ *$/Jul \1/p'

andreasS · 2014-08-17 11:04:02 8
Sysadmin day date of any given year

Calculate Sysadmin day of any given year using 2 `date`. Code based on http://stackoverflow.com/a/5656859/196133 Show Sample Output
This is sample output - yours may be different.
```
Jul 31
```
0

YEAR=2015; date -d${YEAR}0801-$(date -d${YEAR}0801+2days +%u)days +%b\ %e

andreasS · 2014-08-17 11:06:25 9
Find all files modified after a given files last modification time

This function will find the modification time in unix_time of the given file, then calculate the number of minutes from now to then and then find all files modified in that range. Show Sample Output
This is sample output - yours may be different.
```
[rderose@dunkin] (01:42 PM) / 
$ findOlderThan version.txt
./index.html
./js2/select2/select2.png
./js2/select2/select2x2.png
./js2/select2/select2-bootstrap.css
./js2/select2/select2.css
./js2/select2/select2-spinner.gif
./js2/select2/select2.js
./js2/ace-editor/theme-solarized_dark.js
./js2/ace-editor/theme-twilight.js
./js2/ace-editor/theme-idle_fingers.js
```
0

function findOlderThan () { find . -mmin -$((($(date "+%s") - $(stat -c %Y $1))/60)) -type f ; }

RobertDeRose · 2014-08-29 17:52:34 8
Wait for file to stop changing

perl version of "Wait for file to stop changing" When "FileName" has not been changed for last 10 seconds, then print "DONE" "10" in "(stat)[10]" means ctime. One have other options like atime, mtime and others. http://perldoc.perl.org/functions/stat.html
This is sample output - yours may be different.
0

echo FileName | perl -nlE'sleep 1 while time-(stat)[10]<10' && echo DONE

pung96 · 2015-05-09 14:58:41 9
create an empty file

When run on an existing file, alters it's creation date.
This is sample output - yours may be different.
0

touch /path/to/file

lolssl · 2015-09-22 16:49:22 10
Generate a directory path based on the date and time

Great for backup / restore scripts. May want to remove the %M/%S to group backups by hour. If using a script, set a variable earlier with the date command, then reference that variable. Otherwise, time will keep on rolling ;-) declare -rx script_start_time="$(date '+./%Y/%m/%d/%H/%M/%S')" mkdir -p "$script_start_time" Show Sample Output
This is sample output - yours may be different.
```
forest@murgatroyd:~/2015/11/21/00/39/56$ pwd
/home/forest/2015/11/21/00/39/56
```
0

mkdir -p "$(date '+./%Y/%m/%d/%H/%M/%S')"

forestb · 2015-09-25 08:56:26 11
create 7 variables using output of date command

minimal oneliner to keep track of time Show Sample Output
This is sample output - yours may be different.
```
echo $year $month $day $hour $minutes $seconds $epoch
2015 11 10 23 24 21 1447226661
```
0

read year month day hour minutes seconds epoch _ < <(date '+%Y %m %d %H %M %S %s')

snorf · 2015-11-11 07:27:37 9
Powershell Ping Logs Host Up/Down Events

IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type powershell Uses sajb to start a PowerShell background job that pings an IP host every 10 seconds. Any changes in the host's Up/Down state is time-stamped and logged to a file. Date/time stamps are logged in two formats: Unix and human-readable. A while(1) loop repeats the test every 10 seconds by using the sleep command. See the Sample Output for more detail. I use this command to log Up/Down events of my Motorola SB6141 cable modem (192.168.100.1). To end the logging, close the PowerShell window or use the "exit" command. Show Sample Output
This is sample output - yours may be different.
```
C:\Users\user>powershell

Windows PowerShell (C) 2014 Microsoft Corporation.

PS C:\Users\user> sajb {$ip="192.168.100.1";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+(
date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}}


Id  Name  PSJobTypeName   State    HasMoreData Location  Command
--  ----  -------------   -----    ----------- --------  -------
1   Job1  BackgroundJob   Run      True        localhost $ip="192.168.100.1"...

PS C:\Users\user> more $home\ping.txt

1451306247 2015-12-28 12:37:27 192.168.100.1 Up
1451306258 2015-12-28 12:37:38 192.168.100.1 Down
1451306263 2015-12-28 12:37:43 192.168.100.1 Up

PS C:\Users\user>
```
0

sajb {$ip="192.168.100.1";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+(date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}}

omap7777 · 2015-12-28 20:33:08 15
Depend behaviour on hour (e.g. "*" between 10 and 22 , and "#" between 23 to 9 )

echo 'Current hour' hour=$(date +%H) if [ $hour -gt 9 -a $hour -lt 23 ]; then echo -n '*'; else echo -n '#'; fi; echo ' '$hour; echo 'Test around the clock:' for hour in {0..23} {0..23}; do if [ $hour -gt 9 -a $hour -lt 23 ]; then echo -n '*'; else echo -n '#'; fi; echo ' '$hour; done echo 'If you need to depend on UTC, just add `-u` flag to `date` command' Show Sample Output
This is sample output - yours may be different.
```
* 22
```
0

hour=$(date +%H); if [ $hour -gt 9 -a $hour -lt 23 ]; then echo -n '*'; else echo -n '#'; fi; echo ' '$hour;

gwpl · 2016-07-26 20:53:59 11
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Rename all files in lower case

Is today the last day of the month?

Nice simple example of something we can do in bash.

Find the package that installed a command

Tail postfix current maillog and grep for "criteria"

Tail curren postfix maillog.

Change wallpaper

Apply permissions only to files

To apply only to dirs: $ chmod 755 $(find . -type d) Use -R parameters for recursive walk.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Spawn a retro style terminal emulator.

Just note that ctrl+shift+t to make new tabs will not work with . Pair it with a terminal multiplexer like for the best experience.

The NMAP command you can use scan for the Conficker virus on your LAN

This was posted on reddit. replace 192.168.0.1-256 with the IP's you want to check.

Show numerical values for each of the 256 colors in bash

Same as http://www.commandlinefu.com/commands/view/5876, but for bash. This will show a numerical value for each of the 256 colors in bash. Everything in the command is a bash builtin, so it should run on any platform where bash is installed. Prints one color per line. If someone is interested in formatting the output, paste the alternative.

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Commands tagged date (119) the last day the last week the last month all time sorted by date votes

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Commands tagged date (119)

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