python - Modify string in bash to contain new line character? -

i using bash script call google-api's upload_video.py (https://developers.google.com/youtube/v3/guides/uploading_a_video )

i have mp4 called output.mp4 upload.

the problem cannot array work how like.

this new line character "required" because arguments python script contain spaces.

here simplified version of bash script:

# operator may change these hold=100 location="foo, montana " declare -a file_array=("unique_id_0" "unique_id_1")  upload_file=upload_file.txt upload_movie=output.mp4  # hit enter @ end b/c \n not recognized upload_title=$location' - '${file_array[0]}' - hold '$hold' sweeps  ' upload_description='the spectrum recording made in @ '$location'. ' # overwrite 1st call > else apppend >> echo "$upload_title" > $upload_file echo "$upload_description" >> $upload_file  # load each line of text file array ifs=$'\n' cmd_google=$(<$upload_file)  unset ifs  nn=1 in "${cmd_google[@]}"     echo "$i"     # delete last character: \n      #i=${i[-nn]%?}     #i=${i: : -nn}     #i=${i::${#i}-nn}     i=${i%?}     #i=${i#"\n"}     #i=${i%"\n"}     echo "$i" done  python upload_video.py --file=$upload_movie --title="${cmd_google[0]}" --description="${cmd_google[1]}" 

at first attempted remove new line character, appears enter or \n not working how like, each line not separate. writes title , description 1 line.

how modify bash script recognize newline character?

this simpler making it.

# operator may change these hold=100 location="foo, montana" declare -a file_array=("unique_id_0" "unique_id_1")  upload_file=upload_file.txt upload_movie=output.mp4  upload_title="$location - ${file_array[0]} - hold $hold sweeps" upload_description="the spectrum recording made in @ $location."  cat <<eof > "$upload_file" $upload_title $upload_description eof  # ...  readarray -t cmd_google < "$upload_file"  python upload_video.py --file="$upload_movie" --title="${cmd_google[0]}" --description="${cmd_google[1]}" 

i suspect readarray command looking for, since of above code creating file assume receiving created.