#---------------------------------------- ex -s $TARGET >/dev/null <<E_O_F 1 /three/ a This line is added after the first line containing three. . wq! E_O_F #---------------------------------------- ex -s $TARGET >/dev/null <<E_O_F 1 /three/ i This line is added before the first line containing three. . wq! E_O_F #---------------------------------------- ex -s $TARGET >/dev/null <<E_O_F $ a This line is added at the bottom of the file. . wq! E_O_F