akip: skip lines from the standard input

Parameters:
-n {cnt}: skip the given number of lines (at the front of the input)
-e {expr}: skip the lines where the expr gives a nonzero (true) value
  The 'line' variable contains the input line

Examples:
cat names.txt | skip -n 10
  -> list each name except the first 10

cat names.txt | skip -e "strcont(line, 'Smith')"
  -> list the names except the metal-manufacture workers