bash - Sed command is not working as expected in the inner directory files -

i wanted delete , replace first 3 lines of files in directory met condition. used following code:

test=find . -name "*.java" testing $test  function testing{     var in $@             echo $var         if head -3 $var | grep '^ \*$';then             echo "in if"             sed '1,3d' $var > tmp.java; mv tmp.java $var             echo -e "/**\n* new text\n**/" | cat - $var > temp.java     done } 

the code works fine current directory files fails child directory files.

please let me know i'm going wrong.

your script hard read, replace first lines of code use sed command this

sed -i '1,3s/.*/replace_text/' java_file 

your script should this

test=$(find . -name "*.java") testing $test  function testing{     var in $@             echo $var         if head -3 $var | grep '^ \*$';then             echo "in if"             sed -i '1,3s/.*/replace_text/' $var         fi     done }