Question

我有一个这样的文件：

scaffold1_size143306
Os03t0746800-01
scaffold1_size143306
Os03t0746800-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0746500-01
scaffold1_size143306
Os03t0123800-01
scaffold1_size143306
Os03t0123800-01
scaffold1_size143306
Os02t0708500-01
scaffold1_size143306
Os02t0708500-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0708200-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-01
scaffold1_size143306
Os02t0707900-03
scaffold2_size121414
Os06t0136900-01
scaffold2_size121414
Os06t0136900-01
scaffold2_size121414
Os06t0136700-01
scaffold2_size121414
Os06t0136600-01
scaffold2_size121414

等等，直到某些55900的脚手架。我希望我的文件删除重复的标题，所有相应的条目都在一个标题内，即我想这样：

scaffold1_size143306
Os03t0746800-01
Os03t0746800-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0746500-01
Os03t0123800-01
Os03t0123800-01
Os02t0708500-01
Os02t0708500-01
Os02t0708200-01
Os02t0708200-01
Os02t0708200-01
Os02t0708200-01
Os02t0708200-01
Os02t0708200-01
Os02t0707900-01
Os02t0707900-01
Os02t0707900-01
Os02t0707900-01
Os02t0707900-01
Os02t0707900-01
Os02t0707900-03
scaffold2_size121414
Os06t0136900-01
Os06t0136900-01
Os06t0136700-01
Os06t0136600-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0135900-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01
Os06t0134300-01

等每个脚手架。上面的que在它前面写了查询，所以我无法使用该表达式。怎么做？

Answer 1

一些伪代码可以帮助您入门：

while there are more lines is the file
   Read next line
   if that line starts with "scaffold_size" (header line)
      if it's different than the last "scaffold_size" (or the first read in)
         currentScaffoldSizeLine = the just read in line
         output it
      else
         discard the line, because you don't want duplicate headers
   else
      print the body line

如何在第一次出现的标题下连接多个行？

1 个答案: