restrict the user not to key in more than 50 chars


 
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# 1  
Old 08-14-2008
restrict the user not to key in more than 50 chars

When my script is run, it will ask the user to enter some text and the user should be restricted not to enter more than 50 chars. Is there any command which I can use with "read" command? Help me please
# 2  
Old 08-14-2008
Something like this - just to show a way how to do it with more than 5 characters:

Code:
root@isau02:/var/log> echo "Input:"; read INPUT; echo $INPUT| awk '{if ( length($0) > 5 ) {print "too many"}}'
Input:
awidawdi
too many

You can also use "wc -c" and check how many characters are contained so you don't have to use awk. There are many ways.
# 3  
Old 08-14-2008
thanks for the reply. Actually am looking like something...
eg: Input:testing

and the cursor should stop after a particular length and not allow user to enter any more chars in shell scripting not awk
# 4  
Old 08-14-2008
If using bash...
Code:
read -n 50

# 5  
Old 08-14-2008
am working on korn shell, could you help me on this, this is the code

echo "Enter the text"
read text

which should not allow the user to enter more than 50 chars
# 6  
Old 08-14-2008
read command

Hi,

am working on bash shell, could you help me on this, this is the code

echo "Enter the text"
read text

which should not allow the user to enter more than 50 chars

help me, thanks in advance
# 7  
Old 08-14-2008
reborg already showed you how to do that....

Code:
echo -n "Enter text:"
read -n 40 text

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