Visit Our UNIX and Linux User Community


Integer expression expected: with regular expression


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Integer expression expected: with regular expression
# 1  
Old 03-14-2011
Network Integer expression expected: with regular expression

CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.

Code:
source $CA_VERSION_DATA
if [ $CA_RELEASE -ne [0-9]* ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi

Code:
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++ CA_COMPILE_NO=3
++ CA_MNCL_ID=0
+ '[' 6 -ne '[0-9]*' ']'
/usr/sbin/delete_old_patch: line 21: [: [0-9]*: integer expression expected


How to resolve this? Please help

Last edited by pludi; 03-14-2011 at 09:48 AM..
# 2  
Old 03-14-2011
can you try to check in this way:
Code:
echo $CA_RELEASE | grep -oEx "[1-9][0-9]*"

oops, clicked submit by accident...

if result is not empty -> not integer.
if got result -> integer
# 3  
Old 03-14-2011
try
Code:
if [ "$val" -eq "$val" 2> /dev/null ]; then
    echo "is number"
else
    echo "not number"
fi

The redirect hides the error message.
# 4  
Old 03-14-2011
If the mere presence of a non-decimal-digit is sufficient, the following may suffice:
Code:
case ${CA_RELEASE:-a} in
    *[!0-9]*) echo Not an integer ;;
           *) echo An integer ;;
esac

Regards,
Alister

Last edited by alister; 03-14-2011 at 04:01 PM..

Previous Thread | Next Thread
Test Your Knowledge in Computers #421
Difficulty: Medium
JavaScript is strongly typed.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Integer expression expected

Hello , This is the piece of the code which is giving me trouble if ;then exit_proc "${SOURCEDIR}/${OUT_FILE} does not exists or not readable" 2 else word_count=`wc -l < ${SOURCEDIR}/$OUT_FILE` fi if ;then exit_proc "Word_count is more than allowed limit" 1 else... (6 Replies)
Discussion started by: Sri3001
6 Replies

2. Shell Programming and Scripting

Integer expression expected

Hi, I am getting the below error while comparing the month of a file to current month. I am using ls -lrth to get the month of that file and while using the if else condition i am getting the below error.. a1=`ls -lrth abc.txt | awk '{print substr($6,1,3)}'` This gives me the month from... (1 Reply)
Discussion started by: jaituteja
1 Replies

3. Shell Programming and Scripting

Integer expression expected

I need some help with this if but then it says line 11: I don't know what I'm doing wrong (1 Reply)
Discussion started by: margg
1 Replies

4. Shell Programming and Scripting

Integer expression expected

Hi, I have placed the script and running successfully on AIX However in Linux it throws integer expression expected Could some one please help me to fix this MaxThreshold4alert=`echo "$MaxCapacitycnt*(80/100)" |bc -l` echo $MaxThreshold4alert Error: 40.00000000000000000000: integer... (2 Replies)
Discussion started by: ajothi
2 Replies

5. Shell Programming and Scripting

Integer expression expected

hi Guys, when i run the below script its showing error "integer expression expected" script pasted below: #!/bin/sh for i in {1..$2} do if then scp server1:/root/file.2012-$1-0$i . else scp server1:/root/file.2012-$1-$i . fi done (8 Replies)
Discussion started by: ganga39
8 Replies

6. Shell Programming and Scripting

Integer expression expected

Newb here echo "$yesterdaysclose" echo "$close" if ; then echo "stocks moving up" elif ; then echo "stock is moving down" else echo "no change" fi seems to evaluate the floating decimal correctly however returns ./shellscript1.sh: line 17: [: : integer expression expected... (3 Replies)
Discussion started by: harte
3 Replies

7. Shell Programming and Scripting

Error: integer expression expected

root@server01 # df -h | grep /tmp | awk {'print $3}' 252M root@server01 # root@server01 # cat /usr/local/tmpchk.sh #!/bin/sh x=`df -h | grep /tmp | awk {'print $3}'` if ; then rm -fr /tmp/somefolder/ else echo "its small" (2 Replies)
Discussion started by: fed.linuxgossip
2 Replies

8. UNIX for Dummies Questions & Answers

Integer Expression Expected!?!?

Ok, so I am beggining a script to factor the time difference from when a user logs on to current time but before I can even get too far I am getting the INTEGER EXPRESSION EXPECTED error. Can someone tell me what I am doing wrong? lhour=$(who | grep "$1" | cut -c30,31); lmin=$(who | grep "$1"... (1 Reply)
Discussion started by: losingit
1 Replies

9. Shell Programming and Scripting

:integer expression expected

Hi, echo $i until || do read NUM if && ; then printf "$FBOLD\nInvalid number, please enter valid backup number: $FREG" fi done Getting below error : ./import_location.sh: line 234: [: : integer expression expected ./import_location.sh: line 234: [: :... (5 Replies)
Discussion started by: milink
5 Replies

10. Shell Programming and Scripting

Integer Expression Expected

Cannot figure out what the error is on line #10 I was trying to change my login prompt though I've success with that this shows up as well. Here's what I have (1 Reply)
Discussion started by: moonunit
1 Replies

Featured Tech Videos