如何使用PowerShell中的Get-Content和Select-String输出与'this_string'不匹配的行？

Question

I found a post about users that wanted to use grep in PowerShell. For example,

PS> Get-Content file_to_grep | Select-String "the_thing_to_grep_for"

How do I output lines that are NOT this_string ?

Answer 1

Select-String具有NotMatch参数。

get-content file_to_grep | select-string -notmatch "the_thing_to_grep_for"

Answer 2

get-content file_to_grep | select-string "^(?!the_thing_to_grep_for$)"

will return the lines that are different from the_thing_to_grep_for .

get-content file_to_grep | select-string "^(?!.*the_thing_to_grep_for)"

will return the lines that don't contain the_thing_to_grep_for .

Answer 3

gc  file_to_grep | ? {!$_.Contains("the_thing_to_grep_for")}

这是区分大小写的比较。