在 powershell 中导入和导出 csv 文件

Question

i have a csv file "emp.csv" with following information.

empid   status
1   t
2   a
3   t
4   t
5   a

I need empid and status of employees having status="t" and the output should be in "res.csv" file

Answer 1

For this, you'll first want to import the existing data with Import-Csv - but since your file is technically a TSV (tab-separated instead of comma-separated), make sure you specify this with -Delimiter "`t" :

$employeeStatusData = Import-Csv .\path\to\emp.csv -Delimiter "`t"

Import-Csv will parse the input file and store the resulting objects in $employeeStatusData . To filter these object based on the value of the status property/column, use Where-Object :

$filteredEmployeeData = $employeeStatusData |Where-Object status -eq 't'

Now that you have the relevant rows selected, you can export the data again with Export-Csv :

$filteredEmployeeData |Export-Csv .\path\to\res.csv -Delimiter "`t" -NoTypeInformation