If the requirement is that only digits may occur, you can test for the negation of a string of 1 or more digits instead:
With regular patterns you could use:
---
Quote:
Originally Posted by MadeInGermany
With a shell glob you need two conditions
You can use one condition like so:
---
Quote:
Originally Posted by Yoda
In bash, for regular expression matching, you have to use a =~ [..]
So you can try:-
To use regexes you need to leave them unquoted. But even without the quotes, this would seem to do the opposite of what is required. The left condition tests whether a string consists exclusively of alpha characters (letters) or is empty, whereas the requirement is that no non-digits may occur.
Last edited by Scrutinizer; 12-11-2017 at 11:45 PM..
This User Gave Thanks to Scrutinizer For This Post:
Hi,
I need to check for value not equal (<>) to 21 and not equal empty or null values.
Please modify this script
if
then
echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out
end if
TQ (5 Replies)
Hello all,
I have a script that has an infile with system package information. For the most part the script is looking well. The only thing i need help is in testing for null entries and removing null data.
#!/usr/bin/ksh
for i in `cat /mwncps/bin/eco_pack`
do
NAME=`pkginfo -l |... (2 Replies)
hi
I m executing a shell script in which records are to be fetched from a table. If the sql that is running empty result set it is displaying "table null is empty !". I dont want this msg on the standard output. COuld you please help me in this regard (3 Replies)
Hello,
I am working on a script to measure the read performance of a busybox environment. The logical choice is to use a command line like:
(time cp * /dev/null) 2> /tmp/howlong.txt
Ah, the rub is cp or /dev/null will only accept a single file at a time.
The result in the txt file is and... (1 Reply)
Hi all
I have a file that i'm running and exec(cat ./dat) against..and putting its contents into any array, then doing an exploding the array into a multi-dimension array...
The 15 multi-dimensional arrays have elements that are null/empty, I would like to remove/unset these elements and then... (2 Replies)
Hi Guys,
Please help me.. it is urgent. I am writing a perl script to capture command output and redirect it to a logfile.At the same i want to check the return code of the command and log it if the command is not succesful in my logfile.. Here is my code, it is working but system command inside... (2 Replies)
I'm using an text-to-speech synthesis in a script, and I need to redirect it's output to /dev/null
how can I do that ? And how to redirect the stream to his normal output then (sound card ) ?
thankx (2 Replies)
I am using ISQL command in ksh script.
Suppose if i get NULL value from the query which i run,how can i handle it?
I am getting a NULL result set and the following error is coming.
############### output of isql command for getting the sum of JEs ################
-----------
NULL... (4 Replies)
I dont want to print the output in a EMC VMAX storage if it says "The specified device was not found", however it is not letting me do it.
I am trying to run this command:
symaccess -sid xxxx list -type storage -devs 1234
output:
The specified device was not found
I just want the script... (1 Reply)
Hi Team,
I have a file abc.dat which is a empty file. But it has null record in first line. I need to identify this unique file and handle it separately.
scenario 1:
abc/dw> wc abc.dat
1 0 1 abc.dat
abc/dw> cat abc.dat
abc/dw>
scenario 2:
abc/dw> wc pqr.dat
0 0 0 pqr.dat... (3 Replies)