Sponsored Content
Full Discussion: How to compare two strings
Top Forums Shell Programming and Scripting How to compare two strings Post 302226966 by otheus on Wednesday 20th of August 2008 09:03:29 AM
Old 08-20-2008
Quote:
Originally Posted by prashant43
Hi all,

I am trying to compare two strings/dates, but its throwing error::Syntax error at line 5:

Please help !!

Any alternate way to compare two dates is also fine....
logdate1=`date -u '+%Y.%m.%d %T'`
sleep 5
logdate2=`date -u '+%Y.%m.%d %T'`
if test $logdate1 -ge $logdate2
then
echo "$logdate1 is greater"
else
echo "$logdate2 is lesset"
fi


Regards
Prashant
You are making it too hard on yourself. Use
Code:
date +%s

Which gives you the time in seconds.

If you need to get the greater/lesser of the date strings, you can instead use the date command as you have it, pipe it through sort, and then use tail -1 (greater) or head -1 (lesser).

Code:
{ date -u '+%Y.%m.%d %T'; sleep 1; date -u '+%Y.%m.%d %T'; } |sort | head -1

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

to compare two strings

hi all, i am new to unix. Actually i need to compare two string and print the result... suppose type='sun' if; then echo good morning else echo good night fi whether the comparison is right r we need to use eq???? help me please.... :confused: thanks in advance.... (1 Reply)
Discussion started by: ithirak17
1 Replies

2. Shell Programming and Scripting

How to compare two strings using if

Hi, Here is my script #!/bin/ksh echo $pick_typ if ];then echo "inside if" else echo "outside if" fi when ever i pass CUS as parameter to this script am getting the correct value CUS, however if i pass ORD as parameter it is not coming inside if it is echoing else "Outside... (12 Replies)
Discussion started by: bhargav20
12 Replies

3. Shell Programming and Scripting

Compare text strings.

Hi Im trying to write a script that compare a text string. But it fails, I think it adds a extra line feed to the result and fails beacuse of that. The script. DT=`date +'%Y%m%d%H%M%S'` #ALARM_BIN=/users/alarms/ssa/alarms/bin QUEUE_THR=10 #unset offset #offset="***Server reports data... (3 Replies)
Discussion started by: vettec3
3 Replies

4. Shell Programming and Scripting

How to Compare 2 Strings ?

Hello , I want to Compare with 2 strings and get if they are True or not please would like some help on this #!bin/ksh echo "Enter Name 1" read Name1 echo "Enter Name 2" read Name2 echo "------------------------" echo "First Name: $Name1" echo "Second Name: $Name2" echo... (25 Replies)
Discussion started by: shatztal
25 Replies

5. Shell Programming and Scripting

Compare two strings

hi.. i have a problem to compare two string my code is like that if ] then echo "both data are correct" elif ] echo "data is wrong" fi here $username1 is taking value from file.. (7 Replies)
Discussion started by: shubhig15
7 Replies

6. Shell Programming and Scripting

How to compare two strings in a file

hello guyzz please help me out.. I have two file a.sh and b.sh it contains two string SD109 ,SD108 . I want to compaere these two string . If a.sh>b.sh do rebasing record time. else it shows no rebasing required. Thanks. (2 Replies)
Discussion started by: abhijtr
2 Replies

7. Shell Programming and Scripting

Compare strings with space in if statement

DEV> vi test_if_statement.sh "test_if_statement.sh" 9 lines, 205 characters proc_out="Normal completion" proc_out_comp="Normal completion" echo 'proc_out:'$proc_out echo 'proc_out_comp:'$proc_out_comp if then echo 'match' else echo 'no_match' fi ~ ~ ~ ~ ~ ~ ~ ~ ~ (4 Replies)
Discussion started by: cartrider
4 Replies

8. Shell Programming and Scripting

Compare 2 Strings

I have 2 values V_1_4_4_b1 and V_1_5_1_RC_b1. I would need to compare them and determine if the 1st value is greater, less or equal than the 2nd value. The result should need to have a return value. I have below code in bash function but it seems it is not comparing it correctly. Any help will... (8 Replies)
Discussion started by: aderamos12
8 Replies

9. UNIX for Beginners Questions & Answers

If statement to compare two strings

Hi, I am trying to do the following to see if "ip" is already present in a file. if ; then echo "hi" else echo "hello" fi I am seeing errors on the if statement. Can someone please correct the syntax for me? Thanks (2 Replies)
Discussion started by: waince
2 Replies

10. Ubuntu

Compare 2 strings

I think there is a way to detect mouse movement. valuator changes if the mouse moves. So I need to compare the two strings. Not sure how to do that. How could I send the valuator string to a file ? I would need to do it twice. andy@7_~/Downloads$ xinput query-state 9 2 classes :... (7 Replies)
Discussion started by: drew77
7 Replies
DATE(1) 						      General Commands Manual							   DATE(1)

NAME
date - print or set the date and time SYNOPSIS
date [-qsu] [[MMDDYY]hhmm[ss]] [+format] OPTIONS
-q Read the date from stdin -s Set the time (implicit for -q or a date string) -u Print the date as GMT -t Use this number of seconds instead of current time EXAMPLES
date # Print the date and time date 0221921610 # Set date to Feb 21, 1992 at 4:10 p.m. DESCRIPTION
With the -q flag or a numeric argument, date sets the GMT time and date. MMDDYY refers to the month, day, and year; hhmmss refers to the hour, minute and second. Each of the six fields must be exactly two digits, no more and no less. date always display the date and time, with the default format for the system. The -u flag request GMT time instead of local time. A format may be specified with a + followed by a printf-like string with the following options: %% % character %A Name of the day %B Name of the month %D mm/dd/yy %H Decimal hour on 2 digits %I Decimal hour modulo 12 on 2 digits %M Decimal minute on 2 digits %S Decimal seconds on 2 digits %T HH:MM:SS %U Decimal week number, Sunday being first day of week %W Decimal week number, Monday being first day of week %X Same as %T %Y Decimal year on 4 digits %Z Time Zone (if any) %a Abbreviated name of the day %b Abbreviated name of the month %c Appropriate date & time (default format) %d Decimal day of the month on 2 digits %e Same as %d, but a space replaces leading 0 %h Same as %b %j Decimal dey of the year on 3 digits %m Decimal month on 2 digits %n Newline character %p AM or PM %r 12-hour clock time with AM/PM %s Number of seconds since the epoch %t Tab character %w Decimal day of the week (0=Sunday) %x Same as %D %y Decimal year on 2 digits SEE ALSO
time(2), ctime(3), readclock(8). DATE(1)
All times are GMT -4. The time now is 08:46 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy