使用 bash 从 .txt 文件中删除标题/列

Question

I'm automating a workflow with a bash script on Mac OSX. In this workflow, I'd like to add a command that deletes a header from my table (.txt) file that is tab delimited. It looks as follows:

header1 header2 header3
a       1       
b       2       
c       3       
d       4       
e       5       
f       6       

As you can see, the third column, named header3 , is empty.

I've noted this post or this one but I don't understand the arguments.

Could you suggest a line of code that automatically deletes the third column, or (even better) deletes the header called 'header3'?

Answer 1

我找到了答案在这里表2C。

sed s/header3//g input.txt > output.txt

Answer 2

awk旨在处理以空格分隔的文本列：

awk '{print $1 "\t" $2}' input.txt > output.txt