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How do I compare mixed variables?

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Top Forums Shell Programming and Scripting How do I compare mixed variables?
# 1  
Old 03-24-2007
How do I compare mixed variables?
Searched all over can't figure out how to compare variables of alpha and numeric characters.

Example a script that ask user to enter a password and then ask to repeat the password.
# 2  
Old 03-24-2007
Password script
Is this is of any help ? . Please let us know

HTML Code:
#!/bin/ksh
stty -echo -icanon -iuclc
print "Enter you password:\c"
read passwd;
while read  passwd2?"Re enter you password:"
do
 if [[ passwd -ne passwd2 ]] ; then
   print "Password mismatch.Please try again"
 else
   print "You have set ur password as $passwd"
   exit
 fi
done
Thanks,
Nagarajan Ganesan
# 3  
Old 03-24-2007
if [[ passwd -ne passwd2 ]] ; then

Couple of problems there. First you need $ in front of the variables. As written you are comparing "passwd" to "passwd2". Second -ne is a numeric compare.
Code:
$ x1="    123"
$ x2="123"
$
$ [[ $x1 -ne $x2 ]] && echo they are not equal
$ [[ $x1 != $x2 ]] && echo they are not equal
they are not equal
$

# 4  
Old 03-25-2007
I mean if I have a password like fjiK55FF.
If the variable has both alpha and numeric characters. Like a good password should have. Ex. tyyhe84949kjk

Thanks
# 5  
Old 03-25-2007
Quote:
Originally Posted by monx
If the variable has both alpha and numeric characters. Like a good password should have. Ex. tyyhe84949kjk

Thanks
Then treat it just as you would a pure alpha string.
# 6  
Old 03-25-2007
Thanks Perderabo, for spotting out the error

The corrected code would be,

HTML Code:
#!/bin/ksh
stty -echo -icanon -iuclc
print "Enter you password:\c"
read passwd;
while read  passwd2?"Re enter you password:"
do
 if [[ $passwd != $passwd2 ]] ; then
   print "Password mismatch.Please try again"
 else
   print "You have set ur password as $passwd"
   exit
 fi
done
Thanks
Nagarajan Ganesan.
# 7  
Old 03-26-2007
thanks for your help.
Got it working perfect. It was a lesson from the book I'm reading.
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