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# 1  
Change to uppercase

Hi I have a string(can be mix of upper and lower case) and need the first three chars of the string to be converted to uppercase
# 2  
try this,
Code:
echo "teStforyou" | awk '{print toupper(substr($0,1,3))substr($0,4)}'

# 3  
if you have ksh 93 you can use:

Code:
typeset -u F3
STR="teStforyou"
F3=${STR:0:3}
STR=${F3}${STR:4}

# 4  
With GNU sed
Code:
$ echo "teStforyou" | sed 's/\(^...\)/\U&/'
TEStforyou

# 5  
Code:
v=kerflooey
echo "$( echo "${v%${v#???}}" | tr '[:lower:]' '[:upper:]')${v#???}"


Last edited by Scrutinizer; 11-19-2010 at 12:06 PM..

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