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Some beginner help with an if/else statement!

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# 1  
Old 03-11-2011
Some beginner help with an if/else statement!
Hi, first post here, probably seems like a fairly obvious answer but ah well! Just having a bit of trouble with this if/else statement, anyone see what I'm doing wrong?

Code:
#!/bin/sh
name="wayne"
password="12345"
echo "Hello, what is your name?"
read enteredname
clear
if [ "$enteredname" -eq "$name" ];then
        echo "Hi $name, what is your password?"
        read enteredpassword
        clear
        if [ "$enteredpassword" -eq "$password" ];then
                echo "Welcome $name, your username and password are correct!"
        else echo "Sorry $name, that password is incorrect"
        fi
else echo "Sorry, that username does not exist"
fi

When I run it and enter 'wayne', it says the username doesn't exist. Thanks in advance!
# 2  
Old 03-11-2011
-eq and others like that are used to compare two numeric variables,if you wanna compare two strings,use "=" and "!="
Last edited by homeboy; 03-11-2011 at 08:37 AM..
This User Gave Thanks to homeboy For This Post:
cabaiste
# 3  
Old 03-11-2011
Quote:
Originally Posted by cabaiste
Code:
#!/bin/sh
name="wayne"
password="12345"
echo "Hello, what is your name?"
read enteredname
clear
if [ "$enteredname" = "$name" ];then
        echo "Hi $name, what is your password?"
        read enteredpassword
        clear
        if [ "$enteredpassword" = "$password" ];then
                echo "Welcome $name, your username and password are correct!"
        else echo "Sorry $name, that password is incorrect"
        fi
else echo "Sorry, that username does not exist"
fi

This User Gave Thanks to danmero For This Post:
cabaiste
# 4  
Old 03-11-2011
I see! Thanks very much lads!
# 5  
Old 03-11-2011
It will also work like this:
Code:
if [[ "$enteredname" -eq "$name" ]]

In sh, dash and bash.
Last edited by AlphaLexman; 03-11-2011 at 05:53 PM.. Reason: Quote to code tags
# 6  
Old 03-12-2011
@AlphaLexman
double brackets do not work in strict Posix sh nor in dash. Also that construction would require == instead of -eq and you could leave out the double quotes on the left side.
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