Sponsored Content
Top Forums Shell Programming and Scripting Use of expr to calc differenc ein to epoch values Post 303016663 by jonnyd on Tuesday 1st of May 2018 08:50:01 PM
Old 05-01-2018
Thank you!

any idea why the expr is causing an issue?

Code:
lit-dbracm01-p002:/home/oracle>./testdiff.sh
expr: syntax error
Major Alert:
Major Alert:
lit-dbracm01-p002:/home/oracle>cat testdiff.sh
#!/bin/bash

export CHECK_DATE_1=`date +%s`
export FILE1=/tmp/longrunmon.out

export DATE_DIFF=`expr ${CHECK_DATE_1} - ${INSERT_TIME}`


Last edited by Scrutinizer; 05-02-2018 at 12:32 AM.. Reason: code tags
 

5 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Differenc between print and echo

can anyone explain me what is the difference between echo and print in shell programming? (3 Replies)
Discussion started by: chandhar
3 Replies

2. UNIX for Dummies Questions & Answers

Differenc between ps -ef and top

First of all i really thankful to all those people who have created this site. unix.com rocks man!! I am bit confused about the two commands which are 'top' and 'ps -ef'.:confused: My requirement is that i want to monitor the CPU usage of Operating system and if the CPU usage is more than 90%... (2 Replies)
Discussion started by: Amey Joshi
2 Replies

3. Shell Programming and Scripting

test expr VS [ expr ]

What is the difference between test expr VS . For example : if test 5 -eq 6 echo "Wrong" and if echo "Wrong" bot will give the same output as Wrong. Now, what is the difference between these two? though they are producing the same result why we need two? Any answer will be... (2 Replies)
Discussion started by: ashok.g
2 Replies

4. Shell Programming and Scripting

Calc max of a column

In C that was easy with a for and if. Iam trying to learn a litle more in bash. Example Ronaldo:5800 Figo:4000 Rafael:2321 Kaka:1230 I want the max of the $2 and the output will be: The max value is 5800 from Ronaldo. How can i do this in shell? Thanks for all, folks. (11 Replies)
Discussion started by: rafazz
11 Replies

5. Shell Programming and Scripting

date calc

Hi, I need subtract two date values (which are in day of the year format) and the output would give the remaining days. using the command date +"%j" i would get today's 'day of the year' i.e., > date +"%j" 256 Next, i need to take input of a previous date in the format 09/05/2012 and then... (4 Replies)
Discussion started by: sam_bd
4 Replies
basename(1)							   User Commands						       basename(1)

NAME
basename, dirname - deliver portions of path names SYNOPSIS
/usr/bin/basename string [suffix] /usr/xpg4/bin/basename string [suffix] dirname string DESCRIPTION
The basename utility deletes any prefix ending in / and the suffix (if present in string) from string, and prints the result on the stan- dard output. It is normally used inside substitution marks (``) within shell procedures. /usr/bin The suffix is a pattern defined on the expr(1) manual page. /usr/xpg4/bin The suffix is a string with no special significance attached to any of the characters it contains. The dirname utility delivers all but the last level of the path name in string. EXAMPLES
Example 1: Setting environment variables The following example, invoked with the argument /home/sms/personal/mail sets the environment variable NAME to the file named mail and the environment variable MYMAILPATH to the string /home/sms/personal: example% NAME=`basename $HOME/personal/mail` example% MYMAILPATH=`dirname $HOME/personal/mail` Example 2: Compiling a file and moving the output This shell procedure, invoked with the argument /usr/src/bin/cat.c, compiles the named file and moves the output to cat in the current directory: example% cc $1 example% mv a.out `basename $1 .c` ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of basename and dirname: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ /usr/xpg4/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
expr(1), basename(3C), attributes(5), environ(5), standards(5) SunOS 5.10 18 Mar 1997 basename(1)
All times are GMT -4. The time now is 07:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy