Extract numbers from a string and store in variables

davewg · #1 (**permalink**) 11-12-2007

Hi All,

Is it possible in Unix shell script to extract numbers from a string containing ".", such as;

5.2.314

And store in variables so;

var1 = 5
var2 = 2
var3 = 314

Thanks in advance for any help anyone can provide

dave

radoulov · #2 (**permalink**) 11-12-2007

With zsh:

Code:

zsh-4.3.4% s="5.2.314"
zsh-4.3.4% a=(${(s:.:)s})
zsh-4.3.4% print $a[1]
5
zsh-4.3.4% print $a[3]
314

With ksh93/bash:

Code:

bash 3.2.25(1)$ s="5.2.314"
bash 3.2.25(1)$ set -- ${s//./ }
bash 3.2.25(1)$ echo $1
5
bash 3.2.25(1)$ echo $3
314

V3l0 · #3 (**permalink**) 11-12-2007

More rustic, more complicated, but running anywere I think

:

Code:

#!/bin/ksh

a="5.2.314"
i=1

while [ "$a" != "" ]
do
        x[$i]=$(echo $a | cut -d. -f1)
        typeset x$i=${x[$i]}
        ((i=i+1))
        a=$(echo $a | cut -s -d. -f2-)
done

echo "x1=$x1, x2=$x2, x3=$x3"

lione.heart · #4 (**permalink**) 11-13-2007

#!/bin/ksh

str="5.2.314"

Var1=`echo $str | awk -F\. '{print $1}'`
Var2=`echo $str | awk -F\. '{print $2}'`
Var3=`echo $str | awk -F\. '{print $3}'`

echo "$Var1 $Var2 $Var3"

enjoy

summer_cherry · #5 (**permalink**) 11-13-2007

Hi,

CODE:

Code:

echo 5.2.3.314 | awk 'BEGIN{FS="."}
{
for (i=1;i<=NF;i++)
print "var"i"="$i
}'

OUTPUT:

Code:

var1=5
var2=2
var3=3
var4=314

prowla · #6 (**permalink**) 11-13-2007

In a script (ksh):

i=1
echo 5.2.314 | sed 's/\./ /g' | while read n
do
echo "var$i = $n"
let i=i+1
done

davewg · #7 (**permalink**) 11-14-2007

Thank you very much everybody for your help!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
extract numbers from a word	systemali	Shell Programming and Scripting	14	03-30-2009 03:47 AM
can array store float point numbers	naree	SUN Solaris	1	03-05-2008 06:59 AM
How to store the data retrived by a select query into variables?	jisha	Shell Programming and Scripting	12	01-17-2008 11:45 PM
extract from string variable into new variables	Sniper Pixie	UNIX for Dummies Questions & Answers	2	03-03-2006 10:49 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread: