What does "supply values for the following parameters mean in command line?" - powershell

So inside of my terminal, I created a text file inside a directory (cat > fnames.txt). My initial goal was to write some data into said file. After creating fnames.txt, the following information showed up after trying to append data to the file using (cat >> fnames.txt):
cmdlet Get-Content at command pipeline position 1
Supply values for the following parameters:
Path[0]:
Image of terminal
Does anyone know the reason of this and what it means?

The command cat is in Powershell an alias to Get-Content. The cmdlet reads information from somewhere. The error message means that Get-Content does not have an idea from where you want it to get data, so it asks you.

Related

pdftk multi pdf merge via input params

I'm attempting to merge set groups of pdfs, the pdf filenames being dictated elsewhere and passed to ps via input parameter, I've added defaults below to hopefully give a complete picture.
The error raised by pdftk is a failure to open the input files, if I was to run this manually without parameters it works fine so I'm a little stumped as to where I'm going wrong???
param($UniRow="144",$CC="1142033",$Pdfs="EP3058513_A.pdf EP3058512_A.pdf EP2981932_A.pdf EP2981931_A.pdf EP3100208_A.pdf")
Set-Location -Path "E:\pdfs\"
pdftk $Pdfs cat output "E:\OptedOut\pdfs\${UniRow}_${CC}.pdf"
Edit - To clarify, when I say run the above manually I mean....
Set-Location -Path "E:\pdfs\"
pdftk "EP3058513_A.pdf EP3058512_A.pdf EP2981932_A.pdf EP2981931_A.pdf EP3100208_A.pdf" cat output "E:\Reports\UPC\OptedOut\pdfs\144_1142033.pdf"

How to read a text file to a variable in batch and pass it as a parameter to a powershell script

I have a powershell script that generates a report, and I have connected it to an io.filesystemwatcher. I am trying to improve the error handling capability. I already have the report generation function (which only takes in a filepath) within a try-catch loop that basically kills word, excel and powerpoint and tries again if it fails. This seems to work well but I want to embed in that another try-catch loop that will restart the computer and generate the report after reboot if it fails a second consecutive time.
I decided to try and modify the registry after reading this article: https://cmatskas.com/configure-a-runonce-task-on-windows/
my plan would be, within the second try-catch loop I will create a textfile called RecoveredPath.txt with the file path being its only contents, and then add something like:
Set-ItemProperty "HKLMU:\Software\Microsoft\Windows\CurrentVersion\RunOnce" -Name '!RecoverReport' -Value "C:\...EmergencyRecovery.bat"
Before rebooting. Within the batch file I have:
set /p RecoveredDir=<RecoveredPath.txt
powershell.exe -File C:\...Report.ps1 %RecoveredDir%
When I try to run the batch script, it doesn't yield any errors but doesn't seem to do anything. I tried adding in an echo statement and it is storing the value of the text file as a variable but doesn't seem to be passing it to powershell correctly. I also tried adding -Path %RecoveredDir% but that yielded an error (the param in report.ps1 is named $Path).
What am I doing incorrectly?
One potential problem is that not enclosing %RecoveredDir% in "..." would break with paths containing spaces and other special chars.
However, the bigger problem is that using mere file name RecoveredPath.txt means that the file is looked for in whatever the current directory happens to be.
In a comment your state that both the batch file and input file RecoveredPath.txt are located in your desktop folder.
However, it is not the batch file's location that matters, it's the process' current directory - and that is most likely not your desktop when your batch file auto-runs on startup.
Given that the batch file and the input file are in the same folder and that you can refer to a batch file's full folder path with %~dp0 (which includes a trailing \), modify your batch file to look as follows:
set /p RecoveredDir=<"%~dp0RecoveredPath.txt"
powershell.exe -File C:\...Report.ps1 "%RecoveredDir%"

Passing strings with spaces to PowerShell

Ultimately, I want to be able to call my PS script from VBA (Excel), but the easiest way to do that seems to be with system batch commands - so I'm testing my script with a BAT file.
The script returns a text file with the contents of a webpage, sans HTML tags. It works fine called alone with default parameters; it worked fine with no spaces in the output path parameter, but I've had no luck using a path that includes a space.
PS1 script, boiled down:
param ( [string]$outputPathName="" )
$outputPathName | Out-File "D:\Documents\Google Drive\out.txt"
BAT file to test it:
powershell.exe '"D:\Documents\Google Drive\GetWebPage.ps1"' -outputPathName '"D:\Documents\Google Drive\out.txt"'
I get the error message "Unexpected token '-outputPathName' in expression or statement." (I also get a similar error for the argument, but if the parameter name were recognized I might be able to get past this.)
How can I pass a named argument in from BAT script file to PS1 script file (with spaces in the path and argument)?

unable to store output in a variable also not able to export result to any file using powershell

I have written following commands:
$env:Path += "C:\Program Files (x86)\Java\jre6\bin"
& "C:\Program Files (x86)\Java\jre6\bin\java" -version
I am trying to store output of second line in a variable but unable to do so. Also tried to export output in some file, that also did not work. Please assist.
java.exe might be writing the version output to stderr.
You can merge the error stream (2) into the standard output stream (1) with a stream redirection operator (>&) like so:
& "C:\program files(x86)\java\jre6\bin\java" -version 2>&1
PowerShell will try to be helpful and wrap the error output in an ErrorRecord. Since we just need the plaintext output, grab the Message value from the Exception wrapped by it:
$jversion = (& "C:\program files(x86)\java\jre6\bin\java" -version 2>&1).Exception.Message
$jversion will now contain one or more strings as output by java.exe
See the about_Redirection help file for more information

CMD: Export all the screen content to a text file

In command prompt - How do I export all the content of the screen to a text file(basically a copy command, just not by using right-clicking and the clipboard)
This command works, but only for the commands you executed, not the actual output as well
doskey /HISTORY > history.txt
If you want to append a file instead of constantly making a new one/deleting the old one's content, use double > marks. A single > mark will overwrite all the file's content.
Overwrite file
MyCommand.exe>file.txt
^This will open file.txt if it already exists and overwrite the data, or create a new file and fill it with your output
Append file from its end-point
MyCommand.exe>>file.txt
^This will append file.txt from its current end of file if it already exists, or create a new file and fill it with your output.
Update #1 (advanced):
My batch-fu has improved over time, so here's some minor updates.
If you want to differentiate between error output and normal output for a program that correctly uses Standard streams, STDOUT/STDERR, you can do this with minor changes to the syntax. I'll just use > for overwriting for these examples, but they work perfectly fine with >> for append, in regards to file-piping output re-direction.
The 1 before the >> or > is the flag for STDOUT. If you need to actually output the number one or two before the re-direction symbols, this can lead to strange, unintuitive errors if you don't know about this mechanism. That's especially relevant when outputting a single result number into a file. 2 before the re-direction symbols is for STDERR.
Now that you know that you have more than one stream available, this is a good time to show the benefits of outputting to nul. Now, outputting to nul works the same way conceptually as outputting to a file. You don't see the content in your console. Instead of it going to file or your console output, it goes into the void.
STDERR to file and suppress STDOUT
MyCommand.exe 1>nul 2>errors.txt
STDERR to file to only log errors. Will keep STDOUT in console
MyCommand.exe 2>errors.txt
STDOUT to file and suppress STDERR
MyCommand.exe 1>file.txt 2>nul
STDOUT only to file. Will keep STDERR in console
MyCommand.exe 1>file.txt
STDOUT to one file and STDERR to another file
MyCommand.exe 1>stdout.txt 2>errors.txt
The only caveat I have here is that it can create a 0-byte file for an unused stream if one of the streams never gets used. Basically, if no errors occurred, you might end up with a 0-byte errors.txt file.
Update #2
I started noticing weird behavior when writing console apps that wrote directly to STDERR, and realized that if I wanted my error output to go to the same file when using basic piping, I either had to combine streams 1 and 2 or just use STDOUT. The problem with that problem is I didn't know about the correct way to combine streams, which is this:
%command% > outputfile 2>&1
Therefore, if you want all STDOUT and STDERR piped into the same stream, make sure to use that like so:
MyCommand.exe > file.txt 2>&1
The redirector actually defaults to 1> or 1>>, even if you don't explicitly use 1 in front of it if you don't use a number in front of it, and the 2>&1 combines the streams.
Update #3 (simple)
Null for Everything
If you want to completely suppress STDOUT and STDERR you can do it this way. As a warning not all text pipes use STDOUT and STDERR but it will work for a vast majority of use cases.
STD* to null
MyCommand.exe>nul 2>&1
Copying a CMD or Powershell session's command output
If all you want is the command output from a CMD or Powershell session that you just finished up, or any other shell for that matter you can usually just select that console from that session, CTRL + A to select all content, then CTRL + C to copy the content. Then you can do whatever you like with the copied content while it's in your clipboard.
Just see this page
in cmd type:
Command | clip
Then open a *.Txt file and Paste. That's it. Done.
If you are looking for each command separately
To export all the output of the command prompt in text files. Simply follow the following syntax.
C:> [syntax] >file.txt
The above command will create result of syntax in file.txt. Where new file.txt will be created on the current folder that you are in.
For example,
C:Result> dir >file.txt
To copy the whole session, Try this:
Copy & Paste a command session as follows:
1.) At the end of your session, click the upper left corner to display the menu.
Then select.. Edit -> Select all
2.) Again, click the upper left corner to display the menu.
Then select.. Edit -> Copy
3.) Open your favorite text editor and use Ctrl+V or your normal
Paste operation to paste in the text.
If your batch file is not interactive and you don't need to see it run then this should work.
#echo off
call file.bat >textfile.txt 2>&1
Otherwise use a tee filter. There are many, some not NT compatible. SFK the Swiss Army Knife has a tee feature and is still being developed. Maybe that will work for you.
How about this:
<command> > <filename.txt> & <filename.txt>
Example:
ipconfig /all > network.txt & network.txt
This will give the results in Notepad instead of the command prompt.
From command prompt Run as Administrator. Example below is to print a list of Services running on your PC run the command below:
net start > c:\netstart.txt
You should see a copy of the text file you just exported with a listing all the PC services running at the root of your C:\ drive.
If you want to output ALL verbosity, not just stdout. But also any printf statements made by the program, any warnings, infos, etc, you have to add 2>&1 at the end of the command line.
In your case, the command will be
Program.exe > file.txt 2>&1