Very Computer

stty -help
[...]
  [-]echo       echo input characters
[...]

Then, you can inclose your reading command between a "stty -echo" and a "stty
echo" as in :

stty -echo ; read var ; stty echo

or

stty -echo ; cat > file ; stty echo

The same can be done with other shells.

--
Stephane

Is there a way in sh/bash to read data from stdin without echoing to the
screen (as in a password)?

TIA

sean

Hi Sean ,

Try this

=====================
#!/bin/sh
echo " Enter your name ... But it will not be  echoed"
stty -echo  #### To prevent form echoing to the screen
read var
stty echo  #### To bring it back to earlier stae.
echo " You entered $var"
=====================

Hope this helps.

Suresh S Kallaje
Systems Engineer
WIPRO SYSTEMS
INDIA

: Is there a way in sh/bash to read data from stdin without echoing to the
: screen (as in a password)?

: TIA

: sean

Quote:>Is there a way in sh/bash to read data from stdin without echoing to the
>screen (as in a password)?

--
Bill Marcum
"Avoid making eye contact with the factory people. They can see
directly into your soul."

: >Is there a way in sh/bash to read data from stdin without echoing to the
: >screen (as in a password)?
: >
: stty -echo

On a relatded note. Is there any easy/standard way to get asterisks
echo'ed backed for each character typed without writing an elaborate c
program to do so?

-stephen

Quote:> Is there any easy/standard way to get asterisks
> echo'ed backed for each character typed without writing an elaborate c
> program to do so?

#!/bin/bash

newLine="$(echo X | tr 'X' '\015')"
crgRet="$(echo X | tr 'X' '\012')"
backSpace="$(echo X | tr 'X' '\010')"

Print='echo -e'   # enables '\r' in Bash; you may not need this in your shell

getField  ()
{
        getFieldGeneric insecure

Quote:}

Quote:}

        while : ; do
                stty -echo raw
                newChar=$(dd if=/dev/tty bs=1 count=1 2>/dev/null)
                stty -raw echo
                if [ "x${newChar}x" = "x${newLine}x"  -o  \
                         "x${newChar}x" = "x${crgRet}x" ]; then
                        echo
                        break;
                elif [ "x${newChar}" = "x${backSpace}x" ]; then
                        Field="${Field%?}"
                        secureField="${secureField%?}"
                else
                        Field="${Field}${newChar}"
                        secureField="${secureField}${dispChar}"
                fi
                if [ "$1" = "secure" ]; then
                        $Print -n "\r${secureField} ${backSpace}"
                else
                        $Print -n "\r${Field} ${backSpace}"
                fi
        done

Quote:}

getField
echo "getField got: \"${Field}\""

Give it a burl!

Fred Surr
Melbourne

stty -echo
var=""
while read -k c
do if [[ "$c" == "
" ]]
   then break
   fi
   echo -n \*
   var=${var}$c
done
stty echo

Unfortunetly, it's not standard.

--
Stphane