Show only relevant lines in linux config files

gistfile1.bash

cat some.conf | sed 's/^[ \t]*//' |grep -v ^#  | sed '/^$/d'

# as result all non-blank lines from some.conf that do not start with a "#" (which means this only a comment line) are printed to the terminal

# in short: show the lines that contain something relevant

# the first sed removes trailing spaces from all lines
# the grep removes all lines that start with a "#"
# the second sed removes all blank lines