How do I put adjacent lines in a .txt file on the same line in linux bash? -

so new bash linux , trying fix .txt file.

i have .txt file looks this:

blueberry, "yummy", 12345, "i love fruit , eating apples" blueberry, "tasty", 4455, "fruit you" blueberry, "yum", 109833, "i go crazy fruit" blueberry, "wooohh", 1347672, "i love fruit ,  eating apples" blueberry, "yummy yummy", 1023433, "i love fruit more dog" blueberry, "yummy", 12345, "i love fruit , eating apples" blueberry, "something eat", 42, "fruit  greatest thing ever" blueberry, "tasty", 4455, "fruit you" blueberry, "yum", 109833, "i go crazy fruit" 

i want create new .txt file looks this:

blueberry, "yummy", 12345, "i love fruit , eating apples" blueberry, "tasty", 4455, "fruit you" blueberry, "yum", 109833, "i go crazy fruit" blueberry, "wooohh", 1347672, "i love fruit , eating apples" blueberry, "yummy yummy", 1023433, "i love fruit more dog" blueberry, "yummy", 12345, "i love fruit , eating apples" blueberry, "something eat", 42, "fruit greatest thing ever" blueberry, "tasty", 4455, "fruit you" blueberry, "yum", 109833, "i go crazy fruit" 

(so random sentences on 2 lines put together)

so far have tried using echo so:

while read p;                      #for every line in .txt file   if[[ $p == "blueberry"* ]]          #if line starts 'blueberry'         echo -n "$p" >> newfruit.txt   #add line newfruit.txt without new line   else        echo " $p" >> newfruit.txt     #add current line   fi done <fruit.txt 

but returns exact same .txt file have tried using printf , echo -e same result

any suggestions or tips appreciated! thank you!

you have several syntax errors: if[[ needs space, if needs then. aside that, logic little bit incorrect. should it:

while read p;   if [[ $p == "blueberry"* ]];     if [[ -n "$notfirst" ]];      # in blueberry lines first,       echo >> newfruit.txt             # make sure previous line terminated     fi     echo -n "$p" >> newfruit.txt       # wait possible continuation   else     echo -n " $p" >> newfruit.txt      # there's continuation!   fi   notfirst=1                           # don't add newline before first line done < fruit.txt  if [[ -n "$notfirst" ]];          # add newline after last line   echo >> newfruit.txt fi