4 replies to this topic

[veda87]

I am gonna teach about a shell script to do something like this

Quote

Username: veda
Password: *****

Here is the code

#! /bin/sh                  # bash interpreter. Tell the OS that it is bash interpreter

echo -n "Username: "        # prompt it on the console; -n means no new line 

read username               # reads the input from the console and assign its to username

echo -n "Password: "

while [ 1 ]                 
do
    read -s -n1 key       # reads the input; -n 1 means read only one character at a time; -s means silent, it means don't display what is read

    echo -n "*"

    if [[ $key == "" ]];  # checks whether enter is pressed
    then
        exit 0         # exit with return value 0
    fi
exit 0

I guess the code is self explanatory...

Now,How to run this code...

Once the program is ready,
Now change the permission of the program it command is

chmod u+x filename

Quote

chmod - change mode
u - user
x- executable
u+x - add executable permission to the user
filename - name of the file

and now run as

./filename

Quote

. means current directory
./filename means execute the file in current directory

Hope you would have learnt something....

[dazuko]

Thanks for the tutorial...

[Gigia]

Will be better if you mention in heading of thread about which shell are you talking about. For example now you talking about bash.

[h1t4k3]

nice tutorial :D
but what the function of this script ?

[h1t4k3]

nice tutorial :thumbup: