Powershell如何将csv文件中的数据添加到一列

Question

I have a csv file where is few column. example

col1;col2;col3;col4
text1;text2;text3;text4
text5;text6;text7;text8
text9;text10;text11;text12

and I want to add text to column col3, like

col1;col2;col3;col4
text1;text2;append\\text3;text4
text5;text6;append\\text7;text8
text9;text10;append\\text11;text12

So question is how to do this :) I'm stuck whit that how I add data to each column in col3.

Answer 1

Give this a whirl:

Import-Csv -Delim ';' cols.csv | 
    ForEach-Object {$_.col3 = "prepend\$($_.col3)";$_} |
    Export-Csv cols2.csv -Delim ';' -NoTypeInformation

Use the -NoTypeInformation parameter to avoid this comment getting put at the top of your CSV:

#TYPE System.Management.Automation.PSCustomObject

However, if you don't mind the comment then you can leave off the -NoTypeInformation parameter.

Answer 2

You probably know how to read/write data. To change the data, send them to Foreach-Object , alter the data and pass the object further to Export-Csv .

Import-Csv d:\temp\so\csv1.txt  -Delimiter ';' | 
   ForEach-Object { $_.col3 = 'append\' +$_.col3; $_ } | 
   Export-Csv d:\temp\so\csv2.txt -Delimiter ';'