R language: Extract the file name string from the path (basename function)

Suppose there is a path c:/coverage/homo_sapiens.sort.add_exon1_coverage.txt, to extract Homo_sapiens.sort.add_exon1_ Coverage.txt the file name, use the BaseName function and the start, stop parameter, as shown in the command line:

filename<-' C:/coverage/homo_sapiens.sort.add_exon1_coverage.txt ' substr (basename (filename), start = 1, stop = 4) # Represents the first character of the extracted file name to the fourth character, which is homosubstr (basename (filename), start = total, stop = #表示提取文件名的第23个字符至第27个字符, or Exon1paste (substr ( basename (path), start = 1, stop = 4), substr (basename (path), start = all, stop =)) #将两个字符黏贴起来

The effect is as follows:

R language: Extract the file name string from the path (basename function)