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Top Forums Shell Programming and Scripting Use of expr to calc differenc ein to epoch values Post 303016678 by jonnyd on Wednesday 2nd of May 2018 06:56:00 AM
Old 05-02-2018
For some reason the INSERT_TIME value is not being picked up before the rest of the script.

Code:
while IFS=, read -r INSTANCE SESS_COUNT INSERT_TIME

do

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

if [[ ${DATE_DIFF} -gt 69000 && ${DATE_DIFF} -lt 100000 ]]
then
echo Critical Alert: $DATE_DIFF

...

---------- Post updated at 11:56 AM ---------- Previous update was at 11:08 AM ----------

Hi yes, I did set -x

Code:
#!/bin/bash  -x

The out put is now:

Code:
++ date +%s
+ CHECK_DATE_1=1525258379
+ FILE1=/tmp/longrunmon.out
+ IFS=,
+ read -r INSTANCE SESS_COUNT INSERT_TIME
++ expr 1525258379 -
expr: syntax error
+ DATE_DIFF=


For some reason the INSERT_TIME is not being read in this script:

Code:
#!/bin/bash  -x

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

while IFS=, read -r INSTANCE SESS_COUNT INSERT_TIME

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

#echo instance: $INSTANCE
#echo session_count: $SESS_COUNT
#echo insert_time: $INSERT_TIME
#echo date_diff: $DATE_DIFF


do

if [[ ${DATE_DIFF} -gt 69000 && ${DATE_DIFF} -lt 100000 ]]
then
echo Critical Alert: $DATE_DIFF

elif [[ ${DATE_DIFF} -lt 600 ]]
then
echo Major Alert: $DATE_DIFF

fi

done < ${FILE1}


Last edited by rbatte1; 05-02-2018 at 08:10 AM.. Reason: Added CODE tags for output
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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