Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

compare date

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting compare date
# 1  
Old 08-31-2005
compare date
hi friends Smilie ,
I am finding a small difficulty to compare two date & echo comparision results.
The dates are in format 2005/05/31 (yyyy/mm/dd). can we do it using awk command ? How. Although i searched the forum for the key word "compare date" but i could not get the desired so i am posting it.
Please help me out.
Thanks in advance.
# 2  
Old 08-31-2005
Did you check the datecalc solution ?

Vino
# 3  
Old 08-31-2005
Quote:
Originally Posted by vino
Did you check the datecalc solution ?

Vino
Hi friend,
Surely I have checked the datecalc. It can perform almost all date calculations but I think it does not provide solution to date comparison. Hoping a AWK solution to problem.
Thanks.
# 4  
Old 08-31-2005
Quote:
Originally Posted by vanand420
Hi friend,
Surely I have checked the datecalc. It can perform almost all date calculations but I think it does not provide solution to date comparison. Hoping a AWK solution to problem.
Thanks.
What is date comparison for you ?

Do you mean the number of days between two given dates or something else...

Is it a homework problem ?

Vino
# 5  
Old 08-31-2005
Code:
echo 2005/02/31 2005/02/02 | awk '$2<$1{print -1;next}{print ($2>$1)}'

# 6  
Old 09-01-2005
Quote:
Originally Posted by futurelet
Code:
echo 2005/02/31 2005/02/02 | awk '$2<$1{print -1;next}{print ($2>$1)}'

Hi friend,
Good Try but it gives syntax error at line 1.
Please review.
# 7  
Old 05-29-2009
three dates comparision
can any one tell me how this can be modified to compare three dates at a time

echo 2005/02/31 2005/02/02 | awk '$2<$1{print -1;next}{print ($2>$1)}'


Thanks
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Compare Date to today's date in shell script

Hi Community! Following on from this code in another thread: #!/bin/bash file_string=`/bin/cat date.txt | /usr/bin/awk '{print $5,$4,$7,$6,$8}'` file_date=`/bin/date -d "$file_string"` file_epoch=`/bin/date -d "$file_string" +%s` now_epoch=`/bin/date +%s` if then #let... (2 Replies)
Discussion started by: Greenage
2 Replies

2. Answers to Frequently Asked Questions

Compare date in .txt with system date and remove if it's lesser than system date

I m working on shell scripting and I m stuck where in my .txt file there is column as expiry date and I need to compare that date with system date and need to remove all the rows where expiry date is less than system date and create a new .txt with update. (1 Reply)
Discussion started by: Stuti
1 Replies

3. UNIX for Beginners Questions & Answers

Compare date in .txt with system date and remove if it's lesser than system date

Can someone help me with the code wherein there is a file f1.txt with different column and 34 column have expiry date and I need to get that and compare with system date and if expiry date is <system date remove those rows and other rows should be moved to new file f2.txt . I don't want to delete... (2 Replies)
Discussion started by: Stuti
2 Replies

4. Shell Programming and Scripting

Compare the system date with date from a text file

I get the date that's inside a text file and assigned it to a variable. When I grep the date from the file, I get this, Not After : Jul 28 14:09:57 2017 GMT So I only crop out the date, with this command echo $dateFile | cut -d ':' -f 2,4The result would be Jul 28 14:57 2017 GMT How do I... (3 Replies)
Discussion started by: Loc
3 Replies

5. Shell Programming and Scripting

Shell script to compare two files of todays date and yesterday's date

hi all, How to compare two files whether they are same are not...? like i had my input files as 20141201_file.txt and 20141130_file2.txt how to compare the above files based on date .. like todays file and yesterdays file...? (4 Replies)
Discussion started by: hemanthsaikumar
4 Replies

6. Shell Programming and Scripting

Compare Date with String in date format

Hi, I am new to this forum, searched, but for some reason did not find much help, so a new thread. I am trying to compare date with a string which is in date format , but for some reason, system does not give me the right result. Date is coming in a file and i am comparing the same with... (2 Replies)
Discussion started by: mkstool
2 Replies

7. Shell Programming and Scripting

Adding days to system date then compare to a date

Hi! I am trying to read a file and every line has a specific date as one of its fields. I want to take that date and compare it to the date today plus 6 days. while read line do date=substr($line, $datepos, 8) #date is expected to be YYYYMMDD if ; then ...proceed commands ... (1 Reply)
Discussion started by: kokoro
1 Replies

8. Shell Programming and Scripting

ksh compare dates INSIDE a file (ie date A is > date B)

In KSH, I am pasting 2 almost identical files together and each one has a date and time on each line. I need to determine if the first instance of the date/time is greater than the 2nd instance of the date/time. If the first instance is greater, I just need to echo that line. I thought I would... (4 Replies)
Discussion started by: right_coaster
4 Replies

9. Shell Programming and Scripting

Compare date from db2 table to yesterday's Unix system date

I am currently running the following Korn shell script which works fine: #!/usr/bin/ksh count=`db2 -x "select count(*) from schema.tablename"` echo "count" I would like to add a "where" clause to the 2nd line that would allow me to get a record count of all the records from schema.tablename... (9 Replies)
Discussion started by: sasaliasim
9 Replies

10. UNIX for Dummies Questions & Answers

compare today's date with date in a file

Hi I am very new to scripting, Can someone show me how to (in unix shell script) compare the system's date with a date in a file. The requirement is to somehow open this file (which will only have a date in it) and compare it with today's date. If they are equal execute a procedure below but if... (4 Replies)
Discussion started by: siog
4 Replies
Login or Register to Ask a Question