1
vote
1answer
68 views

Date calculation in script for notification alerts

I want to create account expiry alerts therefore I need to write a script which could alert me before 1 month of expiry over email. I'm working on Linux. I can get expiry information as 2015-27-03. ...
1
vote
2answers
118 views

Unable to use date command to change specific date format in Bash shell on OS X terminal

I am using the date -d command to change a specific date format to another. Below is the example used currDate=`Wed 12 Feb 2014` formattedDate=`date -d"${currDate}" +%Y%m%d` echo $formattedDate
6
votes
4answers
371 views

convert date format in log

I have a log with following date format: 2013-12-14 18:53:33 aaaaaaaaaaaaaaaa 2013-12-14 18:53:33 bbbbbbbbb 2013-12-14 18:53:33 ccccccccccccccccccccc What would be the simplest solution to convert ...
3
votes
4answers
206 views

Searching a pattern in file names with number

I have a large number of files in a folder each with the date as the filename. For example 20130101 20130102 20130103 . . . 20130131 similarly for other months 20130201 to 20130230, the pattern is ...
1
vote
3answers
442 views

Batch file move to directory structure based on filename

I am writing a script to move files into directories based on the filename. Files have yyyyddmm-xxxxxxx.jpg name format. The desired directory structure is in the format 2013/01 Jan/31. I am unable ...
3
votes
2answers
499 views

Need to get the difference between two time in seconds

The following two variables contain the start time and the end time , need to get the difference between these two time in seconds start_time=06:07:25 end_time=07:02:08 Desired Output diff_time= ...
3
votes
2answers
158 views

Bash-script. Shift seconds

Maybe somebody can help me. In bash I don't know how to do that. I need to do a bash-script. At stdin I have .srt file of subtitles in this format: num HH:MM:SS,SSS --> HH:MM:SS,SSS text line 1 ...
0
votes
2answers
503 views

Sleep until next occurrence of specific time

I need a series of commands or a single command that sleeps until the next occurrence of a specific time like "4:00" occurs. How would I do that? The at command or a cronjob is not a option because ...
2
votes
1answer
71 views

Any better method than this for sorting files by their creation date?

I needed to display a list of directories sorted by their creation date and I came up with this code snippet that I thought was kind of clever. Is there a more obvious way to do this that I'm missing? ...
0
votes
2answers
123 views

Transform list of files (with date) into list of dates

I have a directory where I store backups. The are in the format Complete Backup YYYY-MM-DD hh-mm-ss.tar.bz2 I have found out that you can feed a date into the date command using date --date="YY-MM-DD ...
1
vote
3answers
624 views

How to combine bash arithmetic with command output?

Suppose you had two commands: First command let foo=2+2 echo $foo 4 Second command date "%s" 1377107324 How would you combine them? Attempt 1. echo The epoch time is: `date +%s` in 100 ...
0
votes
1answer
111 views

How do you time how long a command took to run? [duplicate]

How would you find out how long a running process took to complete? Example: date; dd bs=1m if=/foo of=bar; date ^This example only has 1 second of resolution. Any shell is acceptable.
2
votes
2answers
572 views

How to find files by the time in their filename? [duplicate]

We have a directory contains files which contains time in their filename ./test.2013-06-11_06-01.gz ./test.2013-06-12_01-01.gz ./test.2013-06-13_03-01.gz ./test.2013-06-14_03-01.gz ...
4
votes
3answers
915 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 ...
0
votes
1answer
186 views

expr command used to work and stopped

I am on SunOS machine trying to get the date string of the past minute, yesterday I used this command I found on the internet expr `date +%Y%m%d%k%M` - 1 which is worked just fine and I saw the ...
5
votes
2answers
3k 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 ...
2
votes
3answers
4k views

Appending current date to filename

I'm trying to append the current date to the end of a file name, like what we see in logfiles: TheFile.log.2012-02-11 I have been following this example and applied this to both a Unix and Linux ...
4
votes
2answers
365 views

List files created on Sundays

How do I list/find all the files created on Sundays or Mondays? How do I use the date parameter to display them? Something like : ls -f date + %a or find -type f | date +%A or find -type f ...
2
votes
2answers
8k views

linux + add X days to date and get new virtual date

I have Linux ( RH 5.3) machine I need to add/calculate 10 days plus date so then I will get new date (expiration date)) for example # date Sun Sep 11 07:59:16 IST 2012 So I need to get ...
5
votes
1answer
891 views

Get “date” to understand a timestamp phrase of a different language

My web-scraping scripts have long enjoyed using date -d to read in human-formatted time and date stamps like "March 11, 1999" and convert to any other format I need via the -s parameter. How might I ...
2
votes
5answers
309 views

Is it possible to reference the most recently modified file in a command line argument?

I frequently download PDF files with heinous numeric file names from my browser. These automatically go into ~/Downloads. Ideally I would like to just be able to open these files with: evince "the ...
3
votes
1answer
262 views

bash: cd to the most recently modified child directory

Wondering if there's an easy and/or portable way to say "change to the most recently modified child directory." I can use ls and awk but there's probably a better way. cd $( ls -ltrd */ | tail -1 | ...
7
votes
3answers
458 views

Forcing an 'added' alias to every command

Is it possible to forcibly add a timing alias (for lack of a better way to phrase it) to every command in bash? For example, I would like to have a specific user who whenever a command is run, it is ...
5
votes
3answers
1k views

Fast way to build a test file with every second listed in YYYY-mm-dd HH:MM:SS format

I want to create a large test file with lines containg dates listed by the second, but my method is taking inordinately long... (or at least, that's how it feels :) ... 43 minutes to create only ...