如何将命令的输出存储为 PowerShell 中的变量？

Question

Say I execute the command: git pshu which will give me:

git: 'pshu' is not a git command. See 'git --help'.

Did you mean this?
        push

If this was the last command I executed, I want retrieve the command and store its outputs in a variable for further use.

So far I have tried things like:

$var = echo (iex (h)[-1].CommandLine)
$var = iex (h)[-1].CommandLine | Out-String

etc.

How can I save such output to a variable?

Answer 1

Lets say you are running multiple commands, and you want to store store a run command based on its input.

Lets say you want to store non existing git commands, as git pshu . My proposal will be to store the command and search for the desired pattern on the output as "Did you mean..." . In this case, you can follow as:

$output = git pshu *>&1
if ( "$output".indexOf("Did you mean") -ge 0 ) {
write-host "Command '$($(get-history)[$(get-history).count-1].CommandLine)' didnt exist"

where $(get-history)[$(get-history).count-1].CommandLine will contain the latest run command, in this example, `git pshu'