Shell Removing Tabs/Spaces

Question

I\'ve used a grep command with sed and cut filters that basically turns my output to something similar to this

    this line 1


    this line 2


    another li         


        

Answer 1

Use grep "^." filename to remove blank lines while printing.Here,the lines starting with any character is matched so that the blank lines are left out. ^ indicates start of the line. . checks for any character.