如何更快地批量运行 powershell 命令？

Question

You can create coloured text in the command prompt, but when it runs it's really slow. Is there any way of making it faster?

My Code:

@echo off
cls
powershell write-host -fore Yellow -back Red "Merry" -NoNewLine
powershell write-host -fore Red -back Yellow "Christmas" -NoNewLine
powershell write-host -fore Yellow -back Red "To" -NoNewLine
powershell write-host -fore Red -back Yellow "Everyone" -NoNewLine
powershell write-host -fore Yellow -back Red "In" -NoNewLine
powershell write-host -fore Red -back Yellow "2020!" -NoNewLine

Answer 1

Powershell is an external program, that has to be loaded each time it is used. So use it just once:

@echo off
cls
powershell write-host -fore Yellow -back Red "Merry" -NoNewLine; ^
write-host -fore Red -back Yellow "Christmas" -NoNewLine;^
write-host -fore Yellow -back Red "To" -NoNewLine;^
write-host -fore Red -back Yellow "Everyone" -NoNewLine;^
write-host -fore Yellow -back Red "In" -NoNewLine;^
write-host -fore Red -back Yellow "2020!" -NoNewLine

Powershell has to be loaded just once compared to 6 times before.

The ^ at the end of the lines is a "Line continuation", so actually, this is just one long (logical) line, splitted into several (physical) lines for readabilty:

powershell write-host -fore Yellow -back Red "Merry" -NoNewLine;write-host -fore Red -back Yellow "Christmas" -NoNewLine;write-host -fore Yellow -back Red "To" -NoNewLine;write-host -fore Red -back Yellow "Everyone" -NoNewLine;write-host -fore Yellow -back Red "In" -NoNewLine;write-host -fore Red -back Yellow "2020!" -NoNewLine

Note, cmd has a maximal line length (about ~8k chars), which limits this method.