Question

我试图在PowerShell中过滤我的文件，因此它只包含有价值的行。有没有办法确定[CAR]标签后面是否有值？

或者我必须写这样的东西吗？

$file = Get-Content C:\file.txt
foreach ($line in $file){
   if ($line.Length -gt 47){
       #somehow safe those lines in another file
   }
}

示例原始文件：

25 13:58:09.680 (0410041011) >>>  DIAG[CAR]
25 13:58:09.788 (0410041120) <<<  [NAK]#99[CAR]0998034398[CAR]0998028069[CAR]
25 13:58:29.789 (0410061120) >>>  DIAG[CAR]
25 13:58:29.896 (0410061227) <<<  [NAK]#99[CAR]0998023613[CAR]
25 13:58:49.897 (0410081228) >>>  DIAG[CAR]
25 13:58:49.981 (0410081311) <<<  [NAK]#99[CAR]0998007552[CAR]0998019114[CAR]0998007115[CAR]
25 13:59:09.982 (0410101312) >>>  DIAG[CAR]
25 13:59:10.069 (0410101399) <<<  [NAK]#99[CAR]0998024143[CAR]
25 13:59:29.070 (0410120400) >>>  DIAG[CAR]
25 13:59:29.177 (0410120507) <<<  [NAK]#99[CAR]

应该在新文件中的内容示例：

25 13:58:09.788 (0410041120) <<<  [NAK]#99[CAR]0998034398[CAR]0998028069[CAR]
25 13:58:29.896 (0410061227) <<<  [NAK]#99[CAR]0998023613[CAR]
25 13:58:49.981 (0410081311) <<<  [NAK]#99[CAR]0998007552[CAR]0998019114[CAR]0998007115[CAR]
25 13:59:10.069 (0410101399) <<<  [NAK]#99[CAR]0998024143[CAR]

Answer 1

$data = @(
    "25 13:58:09.680 (0410041011) >>>  DIAG[CAR]",
    "25 13:58:09.788 (0410041120) <<<  [NAK]#99[CAR]0998034398[CAR]0998028069[CAR]",
    "25 13:58:29.789 (0410061120) >>>  DIAG[CAR]",
    "25 13:58:29.896 (0410061227) <<<  [NAK]#99[CAR]0998023613[CAR]",
    "25 13:58:49.897 (0410081228) >>>  DIAG[CAR]",
    "25 13:58:49.981 (0410081311) <<<  [NAK]#99[CAR]0998007552[CAR]0998019114[CAR]0998007115[CAR]",
    "25 13:59:09.982 (0410101312) >>>  DIAG[CAR]",
    "25 13:59:10.069 (0410101399) <<<  [NAK]#99[CAR]0998024143[CAR]",
    "25 13:59:29.070 (0410120400) >>>  DIAG[CAR]",
    "25 13:59:29.177 (0410120507) <<<  [NAK]#99[CAR]"
)

# Use lookahead for a digit
$data -match "\[CAR\](?=\d)"

使用PowerShell中的值过滤.txt文件中的行

1 个答案: