合併具有相同列名的多個txt文件，從文件名中創建一個新列

Question

合併具有相同列名的多個txt文件，從文件名中創建一個新列。尋找一個unix解決方案。

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 

預期輸出 merged_files.txt

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

我試過$ cat file*.txt > merged_files.txt 如何從文件名右邊添加一列？

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 

要獲取表格報告：

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