sed & awk notes (I)sed examples

1.substitute CA with California

    s/CA/California/g

2.delete all line

    d

3.delete 1st line

    1d

4.delete last line

    $d

5.delete blank line

    /^$/d

6.delete lines in 2 regular expression block

    /^\.TS/,/^\.TE/d

7.delete from 50 to the last line

    50,$d

8.delete line 1 to a blank line

    1,/^$/d

9.delete all line except 2 regular expression block

    /^\.TS/,/^\.TE/!d

10.delete blank lines within 2 regular expression block

    /^\.TS/,/^\.TE/{
          /^$/d
    }

11.execute multiple commands within 2 regular expression block

    /^\.TS/,/^\.TE/{
        /^$/d
        s/^\.ps 10/.ps 8/
        s/^\.vs 12/.vs 10/
    }