the "date" tag is used to classify questions about date/calendar/time manipulation, visualisation, conversion... on Unix-like systems.

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0
votes
1answer
38 views

add 10 days for UNIX timestamps output

I've file contain many of epoch / UNIX timestamps need to add for example +10 days for output date so then I will get new date and I've create bash script with date command but seems doesn't work ...
3
votes
4answers
413 views

Calculate date difference between Last modified date of a file and NOW using shell script

I am trying to calculate the time elapsed since the log file was last updated. I guess following commands will be used lastUpdate=$(date -r myLogFile.log) now=$(date) How can I subtract them and ...
3
votes
3answers
323 views

How to sleep until a given date & time?

I want to write a shell where given a date (day-hour-min) e.g. 10:00 AM Sun 2:30 PM Mon ... It sleeps until that exact date & time. I thought one way of doing it is, I could get the current ...
2
votes
2answers
36 views

Renaming a file the moment it appears in a folder

Here's the context : on a samba server, I have some folders (that we'll call A,B,C,D ) which are supposed to receive files from a network scanner. The scanner renders a PDF file named like this : ...
3
votes
1answer
73 views

How can I output month name in a given timezone

I would like to have the output of date +"%B, %d %Y" in my local timezone but considering another timezone for the names (month name in this case). In my system the date +"%B" outputs (please note ...
3
votes
2answers
98 views

Find all files modified around a known one

An installer which isn't really clean (Adobe Acrobat Reader DC) installed on my Unix (Mac OS X) a lot of files in different places. I have a reference file Application which I am pretty sure was ...
8
votes
3answers
1k views

sort at jobs chronologically

Possibly a simple solution I misplaced. How can I get the output of atq sorted chronologically, so I can easily see who's due to run next? The man page for sort doesn't have anything built-in to ...
0
votes
1answer
26 views

How to move (image) files to other directories based on files' dates

I have a directory (currdir) with 24000 images on a centos/cpanel server. I want to split this directory by moving images from this directory into other directories (or sub-directories inside currdir) ...
1
vote
2answers
1k views

Parsing the output of date with sed

I am trying to replace the whitespaces in the output of date with '_' with no success. $date Fri Sep 14 14:10:04 EDT 2012 $ date | sed 's/ /_/' Fri_Sep 14 14:10:24 EDT 2012 As you can see, the ...
0
votes
2answers
25 views

search the most latest's file name

I am writing a bash script to look for a file which's file name is most recently and file name like: ... Wed_Dec_30_16:47:41_PHT_2015.zip Wed_Dec_30_16:00:41_PHT_2015.zip ...
0
votes
1answer
16 views

Count the number of files with yesterday's date in ls's output

I would like to count the number of files with yesterday's date in ls's output. I tried: yday=$(date --date="yesterday" +"%b%Oe") ls . -ltr | grep $yday | wc -l The problem is that files have dates ...
0
votes
1answer
56 views

Convert date strings like 20 July 2017 to epoch and compare in Linux

I am using ksh, and have a text file with several lines of following content. I am trying to compare the date part to current date and find the difference in days and then output the "Server" and ...
1
vote
2answers
25 views

Output both ps and Date on one line, to a file?

I am building a rudimentary logging script, and want to capture the output of ps up 12345 So far I have: DATE2=`date +%Y-%m-%d:%H:%M:%S` echo ${DATE2} >> $filename ps up 12345 --no-headers ...
2
votes
4answers
1k views

How to subtract two times in shell

I nee to subtract two lines which is in the format of time in shell. The time format is hh:mm:ss I used the code below to get the time. cat /var/log/kern.log |grep usb |tail -2| awk '{print $3}' ...
3
votes
1answer
39 views

how to remove 0 (zero) from the day and month but not from the year (01/09/2012) using in Linux (Redhat)

Using Linux (Redhat) I need some help regarding the a/m request When I use dialog: --calendar to output the date. The format will be dd/mm/yyyy but I need the format to be d/m/yyyy for day and month ...
0
votes
1answer
14 views

How to set date with Epoch format

I want to set date from a seconds since epoch value, for instance I want to set date with input value 1452053571. I read through date -help but not found anything. Is there any parameters to do it?
0
votes
1answer
41 views

Setting time and date without using NTP

I have a "windriver" linux based Wimax ASN, and when ever I login, I find the date and time is wrong (example: "15 jul 2010"). Whenever I set both the date and time with the date command, or the ...
55
votes
10answers
65k views

How do I convert an epoch timestamp to a human readable format on the cli?

How do I convert an epoch timestamp to a human readable format on the cli? I think there's a way to do it with date but the syntax eludes me (other ways welcome).
11
votes
4answers
6k views

how to suppress bash octal number interpretation? (to be interpreted as decimal)

I have this: date +"%H hours and %M minutes" I use festival to say it up.. but it says like: "zero nine hours".. I want it to say "nine hours"! but date always give me 09... so I wonder if bash ...
3
votes
3answers
19 views

jump to current day's directory in a date based directory hierachy?

I have a pretty standard directory higherachy, year, month, date, for log files. If I want to go to todays logs I have to type cd logs/2015/12/16/ By itself this wouldn't be bad, but since I ...
2
votes
5answers
16k views

First and last day of a month

Given two numbers, month and year, how can I compute the first and the last day of that month ? My goal is to output these three lines: month / year (month in textual form but that is trivial) for ...
3
votes
1answer
32 views

How to I convert month name to number in BSD date?

I have found solutions for GNU date, but not for BSD date. I would rather not make an if, etc. before I know if there's a built in way.
1
vote
1answer
73 views

How to extract date and calculate if it is within “x” days from today?

Currently I have file with structure as Foo Sign: blah SubFoo Sign: blah BarDate: 2017-11-31 Foo Sign: blah BarDate: Never Foo Sign: blah BarDate: 2016-12-20 Foo Sign: blah ...
3
votes
2answers
30 views

Date change format in unix

I am passing date as variable in function. I want to convert that date in different format. Example DT=2015-12-08 Want to convert DT to 08-dec-2015 in Unix.
1
vote
1answer
23 views

How to see the lines whose date column is less than x day from today

My file ID=29524 02/12/2015,23:59:34,'PAt, 0, ID=29628 02/12/2015,23:59:37,'PAb, 1.9, ID=30816 03/12/2015,00:00:20,'PAc, 4.15, I would like to print files with X days less than from today. My try ...
1
vote
2answers
78 views

How to get yesterday date and stored into one variable

I am having a log file where I need to grep based on yesterday date. How to get the yesterday date. The time stamp in the log file is formatted as: Wed Sep 23 for two digit Wed Dec 1 for one digit ...
7
votes
2answers
10k views

How to find difference between two timestamps up to milliseconds?

I am new to shell scripting. The heart of my script is to find the difference between two timestamps up to milliseconds. With me I have a file with content of timestamps only as 2012-09-13 ...
0
votes
1answer
128 views

Can I see always time in console?

I would like to set the Linux console such that it shows the current time always in console's upper right corner. Is that possible to do? Or is it wise to do if one can never be sure if the cursor is ...
5
votes
4answers
9k views

Subtracting dates in unix

Is there a way in unix to subtract a month or at least 30 days from a specific date? The date is to be inputted by the user. Example: 2012-11-19 - 1 month = 2013-10-19 This one doesn't work: date ...
7
votes
4answers
1k views

Date computations without GNU tools

I have to perform some date calculations and conversion in a shell script. For example computing the difference in day between a date formatted as Nov 28 20:27:19 2012 GMT and today. There are ...
7
votes
2answers
14k views

Good method to compare time?

I need to check for the current time and abort the script if it is not proper time of day I am supposed to run it. Also, if anyone else runs it, it should abort. For example: I need my script to only ...
11
votes
6answers
11k views

date: get current 15 minute interval

Is there any way I can get the current 15 minute interval using the date command or similar ? e.g. something like date %Y.%m.%d %H:%M will give me 2011.02.22 10:19 , I need something that yields ...
1
vote
1answer
27 views

date: Getting next certain hour

I want to get a date-time string in the future, for example I always want to get the next time of 9:00 am. I know the string formats like "tomorrow" or "next day" to get a certain date-time string. ...
5
votes
1answer
14k views

Read log file between two dates

I have to read log file between and my question is how to get only the text in the file wich is between two dates using unix commands? Every line contain date and I want to get the text in the file ...
0
votes
5answers
78 views

Bash:decrementing american date by 1 day mmddyyyy

To simplify the problem, lets say I have variable: dat="10152015" (representing 15th October 2015) the result for dat should be 10142015 Note that I am not using today's date. What I have problem ...
0
votes
1answer
58 views

How to find files that were most recently created on file system?

I am trying to track the completion of a silent installer by detecting the presence of the last file created by it, but in order to do that I need to find out which file that is. Is there any way to ...
33
votes
9answers
69k views

Quickly calculate date differences

I often want to make some quick date calculations, such as: What is the difference between these two dates? What is the date n weeks after this other date? I usually open a calendar and count the ...
0
votes
2answers
38 views

Set yesterday Date in script special for Monday

I am writing a script a check whether exist a backup file every morning Monday to Friday. These backup file is saved in the end of everyday from Monday to Friday only named as 02_10_15 There is ...
1
vote
1answer
30 views

Extract entries from a file ranging from one date to another

There is a file which has entries with the first and second field as date and time in the following manner : 2015/10/14 00:33:37. The file has 100,000+ lines and is constantly updated. Entries in the ...
1
vote
4answers
117 views

How to get the last five business days in a Unix shell script using a `for` loop?

The following script: BUSSINESS_DATE=`date -d "-2 day" +"%Y%m%d"` for (( c=0; c<5 ; c++ )) do WEEKDAY=`date --date="$BUSINESS_DATE -$c day" +%w` if [ $WEEKDAY == "0" ] then ...
0
votes
2answers
47 views

Date format for variable

I need to write a variable with "date" function and I need that the format is yyyymmdd (i.e. 20151031). Also I would remove a day (i.e. 20151031 becomes 20151030) I would use bash. Thanks!
0
votes
1answer
102 views

Execute a command every minute forever using 'date'

I'm looking for a way (bash script or other) to make a command run every minute using date - I've been looking around for similar solutions but they all suggest either cron or watch but what I want to ...
0
votes
1answer
41 views

Issues with storing an echo of a date conversion into a string variable inunix

Apologies but this question comes from a question previously raised: How can I convert a local date-time into UTC date-time? Toby has been absolutely great helping me with some conversion string-->BST ...
0
votes
2answers
36 views

Get the first column of date linux

When I run date on my linux I get Sat Oct 31 11:53:22 BRST 2015. I want to get only Sat. How do I do that? So far I think I should use the code below but it does not work: date | printf $1
0
votes
1answer
151 views

I'm trying to compile alsa-driver-RTv5.18 but get date-time error for gcc 4.9.2

/home/user/Downloads/Rt-Linux-HDaudio-5.18/alsa-driver-RTv5.18/alsa/acore/info.c:1065:22: error: macro "__DATE__" might prevent reproducible builds [-Werror=date-time] "Compiled on " __DATE__ " for ...
6
votes
4answers
3k views

What is a standard command for printing a date in RFC-3339 format?

The date command doesn't offer such thing, which is kind of sad since RFC-3339 is the modern, widespread, sane format used everywhere (except in email which is neither modern nor sane). My timezone ...
3
votes
1answer
110 views

Why does “date” show different times in root and user?

Using dpkg-reconfigure tzdata I have set my timezone to CST, but for non root users the system persists in using UTC time. pi@raspberry ~ $ date Wed Oct 28 18:14:08 UTC 2015 ...
0
votes
0answers
35 views

Reset time / date to current time-zone using timedatectl preferably, or date

As the title says, I'm looking to reset the current system time to the selected time-zone using the timedatectl preferably, or date command. This is on the CentOS 7 OS, hence the timedatectl ...
0
votes
1answer
50 views

Error in 'date -d' command

Hmmm... Right now (Sat Oct 24 00:36:56 CDT 2015) on my Arch Linux system there appears to be a problem with the date command: $ date -d "+8 days" "+%A %d %B %Y" Sunday 01 November 2015 $ date -d "+9 ...
9
votes
2answers
2k views

date command --iso-8601 option

This answer and comments mention --rfc-3339 and a "hidden" --iso-8601 option that I have used for a long time and now seems to be undocumented. When did that option documentation get removed from the ...