Windows Powershell - Simplest way to run a bunch of commands and save output

Question

In Windows Powershell, I want to make a script that runs a bunch of commands in succession.

Like so:

mongo a.js > aout.txt
mongo b.js > bout.txt
...

I'm using PowerShell to get access to the linux like > command. But I can't figure out how to easily write this script. I assume it's trivial. I tried writing a batch script but that doesn't work, due to > isn't supported.

How would you do it?

`1..1000 | % {mongo "$_.js" | Out-File -Path "C:\data\$_.txt"}` Not Tested. Do you have a file naming scheme? I thought for sure '>','>>','2>','2>>',... were supported in bat files. I even have bat scripts that use them. Check the Mongo exe to see if it supports file output. — E.V.I.L., May 23 '13 at 14:43
Redirection (>) most definitely is supported in batch files. — EBGreen, May 23 '13 at 14:46
Odd I did `START /WAIT mongo a.js > a.txt` newline `START /WAIT mongo b.js > b.txt` which didn't work :( and yes mongo support output, it works when I do it manually — Snæbjørn, May 23 '13 at 15:09
lose the start /wait. Executables don't need start and command line executables already block until the exe is finished — Lars Truijens, May 23 '13 at 20:00

score 1 · Accepted Answer · answered May 23 '13 at 22:24

Create a file with a .ps1 extension. Put this in the file:

param($path = $pwd)
mongo $path\a.js > $path\aout.txt
mongo $path\b.js > $path\bout.txt

The above assumes mongo is in your path. Now make sure you have execution policy set to allow scripts to run. Execute this in PowerShell (running as admin):

Set-ExecutionPolicy RemoteSigned # you can also use Unrestricted if you'd like

Then execute your script e.g.:

C:\> C:\mymongo\mongo-it.ps1 C:\mymongo

Windows Powershell - Simplest way to run a bunch of commands and save output

1 Answers1