I'm trying to run the following executable with parameters from Powershell:
wgrib2.exe test_t.grib -if "^(1|2):" -grid_def -else -s -lola 0:360:1 -90:181:1 1x1_t.grib grib -endif
So far I've tried several different methods but none have worked. Initially using cmd.exe:
$wg= test_t.grib -if "^(1|2):" -grid_def -else -s -lola 0:360:1 -90:181:1 1x1_t.grib grib -endif
$jobregrid = Start-Job { cmd.exe /c F:; chdir F:\nwp\global\grib; wgrib2.exe $using:wg" }
Wait-Job $jobregrid
Receive-Job $jobregrid
$jobregrid = $null
Also tried Invoke-Expression and Start-Process.
The command works when run directly from a DOS prompt or from a batch file. The problem seems to be that I don't understand PowerShell syntax sufficiently to deal with "^(1|2):" section. I have tried using the escape character ` but I still can't get it to work.
Help please?
Brian
Related
Here is the program. I am using dell command | configure. The command-line command is as follows:
"C:\Program Files (x86)\Dell\Command Configure\X86_64>cctk.exe" --wakeonlan
In Powershell you can navigate to the folder and run:
./cctk.exe --wakeonlan
I can pipe the above command into a variable and get the information I need. This requires my shell to cd into the folder accordingly and run accordingly.
$test = ./cctk.exe --wakeonlan
This will give you an output. However when you use start-process, you get no output as this is a command-line command. A cmd screen appears and runs the command. So, I added a -nonewwindow and -wait flags. The output now appears on the screen, but I can't seem to capture it.
$test = start-process "C:\Program Files (x86)\Dell\Command Configure\X86_64\cctk.exe" -ArgumentList #("--wakeonlan") -NoNewWindow -Wait
At this point test is empty. I tried using the Out-File to capture the information as well. No success. The command outputs to the screen but nowhere else.
I also tried the cmd method where you pipe the information in using the /C flag.
$test = Start-Process cmd -ArgumentList '/C start "C:\Program Files (x86)\Dell\Command Configure\X86_64\cctk.exe" "--wakeonlan"' -NoNewWindow -Wait
However, I have tried many variations of this command with no luck. Some say C:\Program is not recognized. Some just open command prompt. The above says --wakeonlan is an unknown command.
Any pointers would help greatly.
There are various ways to run this without the added complication of start-process.
Add to the path temporarily:
$env:path += ';C:\Program Files (x86)\Dell\Command Configure\X86_64;'
cctk
Call operator:
& 'C:\Program Files (x86)\Dell\Command Configure\X86_64\cctk'
Backquote all spaces and parentheses:
C:\Program` Files` `(x86`)\Dell\Command` Configure\X86_64\cctk
To elaborate on js2010's helpful answer:
In short: Because your executable path is quoted, direct invocation requires use of &, the call operator, for syntactic reasons - see this answer for details.
To synchronously execute console applications or batch files and capture their output, call them directly ($output = c:\path\to\some.exe ... or $output = & $exePath ...), do not use Start-Process (or the System.Diagnostics.Process API it is based on) - see this answer for more information.
If you do use Start-Process, which may be necessary in special situations, such as needing to run with a different user identity:
The only way to capture output is in text files, via the -RedirectStandardOutput / -RedirectStandardError parameters. Note that the character encoding of the output files is determined by the encoding stored in [Console]::OutputEncoding[1], which reflects the current console output code page, which defaults to the system's active legacy OEM code page.
By contrast, even with -NoNewWindow -Wait, directly capturing output with $output = ... does not work, because the launched process writes directly to the console, bypassing PowerShell's success output stream, which is the one variable assignments capture.
[1] PowerShell uses the same encoding to decode output from external programs in direct invocations - see this answer for details.
I am trying to run an executable through powershell to run headless, to install a program onto a VM/LocalHost machine. I can get the wizard to open, but for whatever reason I cannot get it to run headless. Here is the cmd line that I run that works:
start /WAIT setup.exe /clone_wait /S /v" /qn"
This is my attempts in powershell
Start-Process .\setup.exe /S -Wait -PassThru
Start-Process .\setup.exe /S /v /qn -Wait -PassThru
Start-Process setup.exe -ArgumentList '/clone_wait /S /v /qn' -Wait
In the cmd line instance the application installs without issue - in the powershell instance the wizard opens and is on the first "Next" prompt. Any help would be appreciated!
I also attempted to add the additional parameters "/v" and "/qn" which return an error : Start-Process : A positional parameter cannot be found that accepts argument '/v'
The bottom attempt runs but it's not waiting for the installation to complete
You may be overthinking it. Remember that PowerShell is a shell. One of the purposes of a shell is to run commands that you type.
Thus: You don't need Start-Process. Just type the command to run and press Enter.
PS C:\> .\setup.exe /clone_wait /S /v /qn
Now if the executable (or script) you want to run contains spaces in the path or name, then use the call/invocation operator (&) and specify the quotes; for example:
PS C:\> & "\package files\setup.exe" /clone_wait /S /v /qn
(This behavior is the same no matter whether you are at the PowerShell prompt or if you put the command in a script.)
This worked for me. You need to quote the whole argumentlist, plus embed double quotes to pass what you want to /v.
start-process -wait SetupStata16.exe -ArgumentList '/s /v"/qb ADDLOCAL=core,StataMP64"'
Running the command normally and then using wait-process after might be a simpler alternative, if you're sure there's only one process with that name:
notepad
wait-process notepad
To follow-up to all that you have been given thus far. Running executables via PowerShell is a well-documented use case.
PowerShell: Running Executables
Solve Problems with External Command Lines in PowerShell
Top 5 tips for running external commands in Powershell
Using Windows PowerShell to run old command-line tools (and their
weirdest parameters)
So, from the first link provides more validation of what you've been given.
5. The Call Operator &
Why: Used to treat a string as a SINGLE command. Useful for dealing with spaces.
In PowerShell V2.0, if you are running 7z.exe (7-Zip.exe) or another command that starts with a number, you have to use the command invocation operator &.
The PowerShell V3.0 parser do it now smarter, in this case you don’t need the & anymore.
Details: Runs a command, script, or script block. The call operator, also known as the "invocation operator," lets you run commands that are stored in variables and represented by strings. Because the call operator does not parse the command, it cannot interpret command parameters
Example:
& 'C:\Program Files\Windows Media Player\wmplayer.exe' "c:\videos\my home video.avi" /fullscreen
Things can get tricky when an external command has a lot of parameters or there are spaces in the arguments or paths!
With spaces you have to nest Quotation marks and the result it is not always clear!
In this case it is better to separate everything like so:
$CMD = 'SuperApp.exe'
$arg1 = 'filename1'
$arg2 = '-someswitch'
$arg3 = 'C:\documents and settings\user\desktop\some other file.txt'
$arg4 = '-yetanotherswitch'
& $CMD $arg1 $arg2 $arg3 $arg4
# or same like that:
$AllArgs = #('filename1', '-someswitch', 'C:\documents and settings\user\desktop\some other file.txt', '-yetanotherswitch')
& 'SuperApp.exe' $AllArgs
6. cmd /c - Using the old cmd shell
** This method should no longer be used with V3
Why: Bypasses PowerShell and runs the command from a cmd shell. Often times used with a DIR which runs faster in the cmd shell than in PowerShell (NOTE: This was an issue with PowerShell v2 and its use of .Net 2.0, this is not an issue with V3).
Details: Opens a CMD prompt from within powershell and then executes the command and returns the text of that command. The /c tells CMD that it should terminate after the command has completed. There is little to no reason to use this with V3.
Example:
#runs DIR from a cmd shell, DIR in PowerShell is an alias to GCI. This will return the directory listing as a string but returns much faster than a GCI
cmd /c dir c:\windows
7. Start-Process (start/saps)
Why: Starts a process and returns the .Net process object Jump if -PassThru is provided. It also allows you to control the environment in which the process is started (user profile, output redirection etc). You can also use the Verb parameter (right click on a file, that list of actions) so that you can, for example, play a wav file.
Details: Executes a program returning the process object of the application. Allows you to control the action on a file (verb mentioned above) and control the environment in which the app is run. You also have the ability to wait on the process to end. You can also subscribe to the processes Exited event.
Example:
#starts a process, waits for it to finish and then checks the exit code.
$p = Start-Process ping -ArgumentList "invalidhost" -wait -NoNewWindow -PassThru
$p.HasExited
$p.ExitCode
#to find available Verbs use the following code.
$startExe = new-object System.Diagnostics.ProcessStartInfo -args PowerShell.exe
$startExe.verbs
I am having a bunch of issues with getting a PowerShell command to run. All it is doing is running a command that would be run in a CMD prompt window.
Here is the command:
"C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin\i386\CmRcViewer.exe" PCNAME
I have tried the following with no success (I have tried many iterations of this to try and get one that works. Syntax is probably all screwed up):
$TEXT = $textbox.Text #$textbox is where the user enters the PC name.
$CMDCOMMAND = "C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin\i386\CmRcViewer.exe"
Start-Process '"$CMDCOMMAND" $TEXT'
#iex -Command ('"C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin\i386\CmRcViewer.exe"' $TEXT)
The command will just open SCCM remote connection window to the computer the user specifies in the text box.
Try this:
& "C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin\i386\CmRcViewer.exe" PCNAME
To PowerShell a string "..." is just a string and PowerShell evaluates it by echoing it to the screen. To get PowerShell to execute the command whose name is in a string, you use the call operator &.
To run or convert batch files externally from PowerShell (particularly if you wish to sign all your scheduled task scripts with a certificate) I simply create a PowerShell script, e.g. deletefolders.ps1.
Input the following into the script:
cmd.exe /c "rd /s /q C:\#TEMP\test1"
cmd.exe /c "rd /s /q C:\#TEMP\test2"
cmd.exe /c "rd /s /q C:\#TEMP\test3"
*Each command needs to be put on a new line calling cmd.exe again.
This script can now be signed and run from PowerShell outputting the commands to command prompt / cmd directly.
It is a much safer way than running batch files!
One solution would be to pipe your command from PowerShell to CMD. Running the following command will pipe the notepad.exe command over to CMD, which will then open the Notepad application.
PS C:\> "notepad.exe" | cmd
Once the command has run in CMD, you will be returned to a PowerShell prompt, and can continue running your PowerShell script.
Edits
CMD's Startup Message is Shown
As mklement0 points out, this method shows CMD's startup message. If you were to copy the output using the method above into another terminal, the startup message will be copied along with it.
For those who may need this info:
I figured out that you can pretty much run a command that's in your PATH from a PS script, and it should work.
Sometimes you may have to pre-launch this command with cmd.exe /c
Examples
Calling git from a PS script
I had to repackage a git client wrapped in Chocolatey (for those who may not know, it's a package manager for Windows) which massively uses PS scripts.
I found out that, once git is in the PATH, commands like
$ca_bundle = git config --get http.sslCAInfo
will store the location of git crt file in $ca_bundle variable.
Looking for an App
Another example that is a combination of the present SO post and this SO post is the use of where command
$java_exe = cmd.exe /c where java
will store the location of java.exe file in $java_exe variable.
You must use the Invoke-Command cmdlet to launch this external program. Normally it works without an effort.
If you need more than one command you should use the Invoke-Expression cmdlet with the -scriptblock option.
The more forums i look on, the more confused i get, and i've found very similar posts, but not exactly what i'm looking for, i'm a powershell newbie, can someone tell me the best way of being able to write this in powershell.
I can get the program to launch but it's passing the parameters and the syntax i'm struggling with. To make it easier to read i have removed any formatting from the $programArgs command so i'm hoping it's just putting in the correct synatax around it.
This is what i have so far:-
$program = "C:\Program Files (x86)\PuTTY\psftp.exe"
$programArgs = "-pw 1234 -P 10023 -i D:\sftp\Keys\mykey.ppk bigG#Dmydomain.co.uk -b d:\sftp\Scripts\GetAll.txt"
Invoke-Command -ScriptBlock { & $program $programArgs }
Should be able to just use Invoke-Expression "$program $programArgs".
To Clarify this is the command i used to launch psftp and pass various parameters:-
Start-Process -FilePath "c:\Program Files (x86)\PuTTY\psftp.exe" -ArgumentList "-pw Password123 -P 10023 -i D:\Keys\pub.ppk username#username.com -b d:\Scripts\GetAll.txt" -Wait -NoNewWindow
I am trying to invoke a command-line .exe tool (x264 to convert some videos) and print its output in PowerShell host.
There are a lot of parameters that need to be passed to the x264. So far I couldn't run it with the Invoke-Item cmdlet so I tried
[diagnostics.process]::start($com, $args).WaitForExit()
This works fine but it opens the old cmd window to show the output. Just out of curiosity I was wondering how can I show the output in the host.
I might be completely off, no PowerShell guru, but can't you just run the following?
$args = #("list", "of", "args", "here")
& x264.exe $args
When the cmd window opens, does it show the output? If so, maybe this can help.
Start-Process c:\x264.exe -ArgumentList $args -Wait -NoNewWindow