Removing_duplicate_lines”>http://vim.wikia.com/wiki/Uniq-_Removing_duplicate_lines
:g/^(.*)
\n\1
/d
:g/\%(^\1
\n\)\@<=\(.∗\)
/d
删除的是重复项的前面一项;后面的命令删除的重复项的后面的内容。注意两个命令独立的,可以分别使用。对于g命令不是很熟悉,它是一个全局命令,以后会有全面介绍。
第二个命令的解释:
g//d <– Delete the lines matching the regexp
\@<= <– If the bit following matches, make sure the bit preceding this symbol directly precedes the match
(.*)
<–Matchthelineintosubstregister1%()<—Groupwithoutplacinginasubstregister.\1
\n <— Match subst register 1 followed by end of line and the new line between the 2 lines