Question

The following program reads a file and it intends to store the all values (each line) into a variable but doesn’t store the last line. Why?

file.txt :

   1
   2
   .
   .
   .
   n

Code :

 FileName=file.txt

if test -f $FileName         # Check if the file exists
    then
        while read -r line
        do    
            fileNamesListStr="$fileNamesListStr $line"

        done < $FileName
    fi

  echo "$fileNamesListStr"  // 1 2 3 ..... n-1 (but it should print up to n.)

Answer 1

Instead of reading line-by-line, why not read the whole file at once?

[ -f $FileName ] && fileNameListStr=$( tr '\n' ' ' < $FileName )