合并具有相同列名的多个txt文件，从文件名创建新列

Question

合并具有相同列名的多个txt文件，从文件名创建一个新列。寻找unix解决方案。

例如

FILE1.TXT

country   player  age
USA       Ben     24 

FILE2.TXT

country   player  age
UK        John     27

file3.txt

country   player  age
Spain     Alex     28
Germany   Hubber   26

预期产量 merged_files.txt

filename   country   player  age
 file1      USA       Ben     24 
 file2      UK        John     27
 file3      Spain     Alex     28
 file3      Germany   Hubber   26

我试过$ cat file*.txt > merged_files.txt 如何从文件名中向右添加一个附加列？

Answer 1

您可以使用此awk命令：

awk 'FNR==1{if (NR==1) print "filename", $0; next} {print FILENAME, $0}' file[123]

filename country   player  age
file1 USA       Ben     24
file2 UK        John     27
file3 Spain     Alex     28
file3 Germany   Hubber   26

获取表格报告：

awk 'FNR==1{if (NR==1) print "filename", $0; next} {print FILENAME, $0}' file[123] |
column -t

filename  country  player  age
file1     USA      Ben     24
file2     UK       John    27
file3     Spain    Alex    28
file3     Germany  Hubber  26