Question

我正在使用column -V column from util-linux 2.23.2与cat foo_bar.csv | column -s"," -t -c5一起运行REHL7

我的csv文件包含一些带有长字符串的列。我想将csv视为一个表，并限制列宽，因为我是通常对检查长串不感兴趣。

test.csv

看来列宽不限于10个字符。我想知道这是不是一个错误，或者我做错了什么并且看不到它？

测试输入，co1,col2,col3,col4,col5 1,2,3,longLineOfTextThatIdoNotWantToInspectAndWouldLikeToLimit,5

cat test.csv | column -s"," -t -c5 

co1  col2  col3  col4 col5
1    2     3     longLineOfTextThatIdoNotWantToInspectAndWouldLikeToLimit  5

运行我认为正确的命令：

CREATE TABLE IF NOT EXISTS availables (   
   IdMat     TINYINT,  
   size      INT, 
PRIMARY KEY(IdMat ) )

Answer 1

<div id='parent'> <table id='child1'> <colgroup> <col width='400px'></col> </colgroup> <tbody> <tr> <td>Child1withareallyreallylongtitle</td> </tr> </tbody> </table> <div id='child2'> <p>Child 2</p> </div> </div>或−c选项不会按您的意图执行。默认情况下， −−columns查看所有行以找到最长的行。如果column适合2 那些80宽度的线，然后每2行适合一个：

column

如果你将$ cat file 1 this is a short line 2 this is a short line 3 this line needs to be 39 or less char 4 this line needs to be 39 or less char $ column file 1 this is a short line 3 this line needs to be 39 or less char 2 this is a short line 4 this line needs to be 39 or less char $ column -x file 1 this is a short line 2 this is a short line 3 this line needs to be 39 or less char 4 this line needs to be 39 or less char低于80，那么它就会降低你获得的可能性超过1列：

-c

所以，简单地说，$ column -c70 file 1 this is a short line 2 this is a short line 3 this line needs to be 39 or less char 4 this line needs to be 39 or less char不能做你想做的事。 Awk可以这样做：

column

结果：

BEGIN {
  FS = ","
}
{
  for (x = 1; x <= NF; x++) {
    printf "%s%s", substr($x, 1, 5), x == NF ? "\n" : "\t"
  }
}

列，宽度参数不起作用

1 个答案: