I have a PowerShell script that outputs a single string value. I have a cmd batch script that needs to execute the PowerShell script and place that single PowerShell output value into a variable in the batch script. I'm finding all sorts of methods for exporting to a file or reading a file but that's not what I want. Thanks!
(edit) Here's where I'm trying to use it (in response to posting the script):
#echo off
REM The next line puts the .ps1 output into the variable
REM and, obviously, this does not work
set pass_word=<C:\temp\PullPassword.ps1
tabcmd login -s "http://myserver.net" -u mylogon -p %pass_word%
( edit )
I saw the answer by the OP here Getting Powershell variable value in batch script and also looked at foxdrive's answer so I started playing with the FOR...DO statement. I thought I was pretty good with cmd and couldn't figure out why what I had wasn't working:
for /f "delims=" %%a in ('powershell . "C:\temp\PullPassword.ps1"') do set val=%%a
echo %a%
When I was looking at foxdrive's full answer in the other post it struck me: %a% was wrong, I needed %val%! Oh, the shame! The below works:
#echo off
set mypath=C:\temp\PullPassword.ps1
for /f "delims=" %%a in ('powershell . "C:\temp\PullPassword.ps1"') do set pass_word=%%a
tabcmd login -s "http://myserver.net" -u mylogon -p %pass_word%
So I'll credit where it's due and mark foxdrive's answer correct, even though it was the other post that clarified my mistake.
This may help: it expects that the powershell script outputs the text to STDOUT which is the normal place for it to appear.
#echo off
for /f "delims=" %%a in (' powershell "script.ps1" ') do set "var=%%a"
Related
I have a project for my Radio Station where I copy the text within a .wsx file of what is on air and parse it to a Audio Processor in my private network for RDS Display using a wget command like
set /p TEXTO= 0<R:\40.wsx
wget -q "http://x.x.x.x:7380/parameter/fm/rds/rds_rt=%TEXTO%" -O NUL
It works great but it won't filter if it's music or promotions.
My challenge is to be able to filter and only parse music names.
For the process I marked the Files that i don't want to show up like commercial, or promotions to start with a "#-" without the quotes.
So the text will show like #-Promo1
My Code:
for /F "delims=" %%a in ('FINDSTR "\<#-.*" C:\RDS\PRUEBAS\txt1.wsx') do set
"VAR=%%a"
echo %VAR%
if "%VAR%" == "true" (
set /p VAR=0<C:\FILEPATH\LOS40.wsx & wget -q
"http://x.x.x.x:7380/parameter/fm/rds/rds_rt=%VAR%" -O NUL
) else (
set /p TEXTO=0<C:\FILEPATH\ENVIVO.wsx & wget -q
"http://x.x.x.x:7380/parameter/fm/rds/rds_rt=%TEXTO%" -O NUL
)
I can't seem to find a correct way to filter it.
pls Heelpp..
for /F "delims=" %%a in ('FINDSTR "\<#-.*" C:\RDS\PRUEBAS\txt1.wsx') do set
should be
for /F "delims=" %%a in ('FINDSTR /b "#-" C:\RDS\PRUEBAS\txt1.wsx') do set
to find those lines in the .wsx file that do /b begin with "#-"
If you want to find those lines that do not begin with "#-" then add /v to the /b.
The result will be a line from the file which does [not] begin with "#-" which will be placed in %%a.
If you simply assign %%a to a variable as you are doing, that variable will contain after the for the last value that was assigned to it.
If you want to execute your wget on each name, then use
for /F "delims=" %%a in ('FINDSTR /B "#-" C:\RDS\PRUEBAS\txt1.wsx') do (
echo %%a
)
and between the parentheses you can execute commands using %%a as a filename.
Quite what you propose to do is obscure. I've no idea what the set/p from an unexplained file is meant to do, but be aware that any code between parentheses is subject to the delayedexpansion trap - please explain what processing you intend to apply to the filenames that do[not] match a leading #-.
You should read SO items on delayed expansion (it's documented with and without the space) to understand the problems with and solutions to processing values that are altered within a loop.
First of all thanks for your help.. I don't have experience in coding.
Let me explain a little bit more..
As I said before its a radio station which will provide text to the Car o home stereos using the RDS Protocol which allow me to send text like song name, title, etc.
Im My case the Audio Processor that let me send the text will receive the info as a URL where I add at the end the text I want to send.
For Example:
http://x.x.x.x:7380/parameter/fm/rds/rds_rt=%TEXTO%
%TEXTO% will be the text Im sending.
C:\RDS\PRUEBAS\txt1.wsx Contains the text of what it being played at the moment and which is being read to see if the #- for the script to avoid sending those titles.
I have a Pc running a Directory Monitor Program that will monitor events on file C:\RDS\PRUEBAS\txt1.wsx and that as soon as being modified, it will execute the batch file CHECKRDS.cmd.
After testing I decided to run a code in CHECKRDS.cmd like:
for /F "delims=" %%a in ('FINDSTR /v "#-" R:\40PPALES.wsx') do (
START "" RDS.bat
)
EXIT
RDS.bat contains code and it works fine:
set /p TEXTO= 0<C:\RDS\PRUEBAS\txt1.wsx
wget -q "http://x.x.x.x:7380/parameter/fm/rds/rds_rt=%TEXTO%" -O NUL
EXIT
As far as the set /p I test it from What does /p mean in set /p?
AS I said before Im new at coding and I just googled everything and started to assable the pieces of the puzzle.
Pls, If you think I should be doing these process diferently, pls let me know..
And sorry for my bad english..
regards
Have created a batch script and found that the values are not getting set when trying to read from for loop.
sqlplus #D:\Batch_job\Sql\COUNT.sql>D:\Batch_job\COUNT.txt
FIND /C /I "ORA-" D:\Batch_job\COUNT.txt >D:\Batch_job\ERR.txt
FOR /F "tokens=3" %%B IN (D:\Batch_job\ERR.txt) DO SET COUNT_ERROR=%%B
ECHO %COUNT_ERROR%
The above echo is not returning any value. I tried using enabledelayedexpansion, too. But that is also not working. When I tried to create some test script and execute just this much chunk than it is giving me result. But when called from the whole script the result is always same NULL.
I know this question is asked many times, but I didn't get the answer for what I am searching.
I want to replace a pattern using windows .bat file.
I know how to replace X with Y.
But I am trying to replace say installPath with C:\Programfiles\Install\.
Here, I am facing issues as the new value string contains \ i.e special character.
Please let me know how I can replace this.
This works fine for me
set p=installPath
set p=%p:installPath=C:\Programfiles\Install\%
echo %p%
Followinf script will find the string in the file and replace with another string.
EX. "installPath" will be replaced with "C:\Programfiles\Install"
#echo off
for /f "usebackq tokens=*" %%a in ("test.txt") do call :Replace "%%a"
del "test.txt"
rename "newfile.txt" test.txt
exit /b
:Replace
set str1=%~1
set str1=%str1:installPath=C:\Programfiles\Install%
echo.%str1%>>"newfile.txt"
exit /b
Perhaps this tool might help you:
http://sourceforge.net/projects/fart-it/
This should work... By the way, this is my first post on this website.
The following uses delayed expansion so that you have two different 'variable symbols' to play with:
setlocal enabledelayedexpansion
set iPath=installPath
set input=C:\Programfiles\Install\
set p=!iPath:installPath=%input%!
Hope this helps
This question already has answers here:
Set output of a command as a variable (with pipes) [duplicate]
(6 answers)
Closed 7 years ago.
I need to run a simple find command and redirect the output to a variable in a Windows Batch File.
I have tried this:
set file=ls|find ".txt"
echo %file%
But it does not work.
If I run this command it works without problems:
set file=test.txt
echo %file%
So obviously my command output is not being set to my variable. Can anyone help? Thanks
I just find out how to use commands with pipes in it, here's my command (that extracts the head revision of an svn repo) :
SET SVN_INFO_CMD=svn info http://mySvnRepo/MyProjects
FOR /f "tokens=1 delims=" %%i IN ('%SVN_INFO_CMD% ^| find "Revision"') DO echo %%i
First of all, what you seem to expect from your question isn't even possible in UNIX shells. How should the shell know that ls|find foo is a command and test.txt is not? What to execute here? That's why UNIX shells have the backtick for such things. Anyway, I digress.
You can't set environment variables to multi-line strings from the shell. So we now have a problem because the output of ls wouldn't quite fit.
What you really want here, though, is a list of all text files, right? Depending on what you need it's very easy to do. The main part in all of these examples is the for loop, iterating over a set of files.
If you just need to do an action for every text file:
for %%i in (*.txt) do echo Doing something with "%%i"
This even works for file names with spaces and it won't erroneously catch files that just have a .txt in the middle of their name, such as foo.txt.bar. Just to point out that your approach isn't as pretty as you'd like it to be.
Anyway, if you want a list of files you can use a little trick to create arrays, or something like that:
setlocal enabledelayedexpansion
set N=0
for %%i in (*.txt) do (
set Files[!N!]=%%i
set /a N+=1
)
After this you will have a number of environment variables, named Files[0], Files[1], etc. each one containing a single file name. You can loop over that with
for /l %%x in (1,1,%N%) do echo.!Files[%%x]!
(Note that we output a superfluous new line here, we could remove that but takes one more line of code :-))
Then you can build a really long line of file names, if you wish. You might recognize the pattern:
setlocal enabledelayedexpansion
set Files=
for %%i in (*.txt) do set Files=!Files! "%%i"
Now we have a really long line with file names. Use it for whatever you wish. This is sometimes handy for passing a bunch of files to another program.
Keep in mind though, that the maximum line length for batch files is around 8190 characters. So that puts a limit on the number of things you can have in a single line. And yes, enumerating a whole bunch of files in a single line might overflow here.
Back to the original point, that batch files have no way of capturing a command output. Others have noted it before. You can use for /f for this purpose:
for /f %%i in ('dir /b') do ...
This will iterate over the lines returned by the command, tokenizing them along the way. Not quite as handy maybe as backticks but close enough and sufficient for most puposes.
By default the tokens are broken up at whitespace, so if you got a file name "Foo bar" then suddenly you would have only "Foo" in %%i and "bar" in %%j. It can be confusing and such things are the main reason why you don't ever want to use for /f just to get a file listing.
You can also use backticks instead of apostrophes if that clashes with some program arguments:
for /f "usebackq" %%i in (`echo I can write 'apostrophes'`) do ...
Note that this also tokenizes. There are some more options you can give. They are detailed in the help for command.
set command has /p option that tells it to read a value from standard input. Unfortunately, it does not support piping into it, but it supports reading a value from a first line of existing file.
So, to set your variable to the name of a first *.txt file, you could do the following:
dir /b *.txt > filename.tmp
set /p file=< filename.tmp
del /q filename.tmp
It is important not to add a space before or even after =.
P. S. No fors, no tokens.
Here's a batch file which will return the last item output by find:
#echo off
ls | find ".txt" > %temp%\temp.txt
for /f %%i in (%temp%\temp.txt) do set file=%%i
del %temp%\temp.txt
echo %file%
for has a syntax for parsing command output, for /f "usebackq", but it cannot handle pipes in the command, so I've redirected output to a temporary location.
I strongly recommend, given that you have access to ls, that you consider using a better batch language, such as bash or even an scripting language like python or ruby. Even bash would be a 20x improvement over cmd scripting.
The short answer is: Don't!
A windows shell env var can hold a max of 32 Kb and it isn't safe to save output from programs in them.
That's why you can't. In batch script you must adopt another programming style. If you need all of the output
from the program then save it to file. If you only need to check for certain properties then pipe the output into
a program that does the checking and use the errorlevel mechanism:
#echo off
type somefile.txt | find "somestring" >nul
if %errorlevel% EQU 1 echo Sorry, not found!
REM Alternatively:
if errorlevel 1 echo Sorry, not found!
However, it's more elegant to use the logical operators Perl style:
#echo off
(type somefile.txt | find "somestring" >nul) || echo Sorry, not found!
It's not available in DOS, but in the Windows console, there is the for command. Just type 'help for' at a command prompt to see all of the options. To set a single variable you can use this:
for /f %%i in ('find .txt') do set file=%%i
Note this will only work for the first line returned from 'find .txt' because windows only expands variable once by default. You'll have to enable delayed expansion as shown here.
what you are essentially doing is listing out .txt files. With that, you can use a for loop to over dir cmd
eg
for /f "tokens=*" %%i in ('dir /b *.txt') do set file=%%i
or if you prefer using your ls, there's no need to pipe to find.
for /f "tokens=*" %%i in ('ls *.txt') do set file=%%i
Example of setting a variable from command output:
FOR /F "usebackq" %%Z IN ( `C:\cygwin\bin\cygpath "C:\scripts\sample.sh"` ) DO SET BASH_SCRIPT=%%Z
c:\cygwin\bin\bash -c '. ~/.bashrc ; %BASH_SCRIPT%'
Also, note that if you want to test out the FOR command in a DOS shell, then you need only use %Z instead of %%Z, otherwise it will complain with the following error:
%%Z was unexpected at this time.
Any ideas how to echo or type the last 10 lines of a txt file?
I'm running a server change log script to prompt admins to state what they're doing, so we can track changes. I'm trying to get the script to show the last 10 entries or so to give an idea of what's been happening recently. I've found a script that deals with the last line, as shown below, but can't figure out what to change in it to display the last 10 lines.
Script:
#echo off
setLocal EnableDelayedExpansion
for /f "tokens=* delims= " %%a in (c:\log09.txt) do (
set var=%%a
)
echo !var!
Example of log file:
06/02/2009, 12:22,Remote=Workstation-9,Local=,
mdb,bouncing box after updates,CAS-08754,
=================
07/02/2009, 2:38,Remote=,Local=SERVER1,
mdb,just finished ghosting c drive,CAS-08776,
=================
07/02/2009, 3:09,Remote=,Local=SERVER1,
mdb,audit of server,CAS-08776,
Any thoughts?
The script works great, just need it to pipe more lines to the screen.
Hopefully this will save Joel's eyes :)
#echo OFF
:: Get the number of lines in the file
set LINES=0
for /f "delims==" %%I in (data.txt) do (
set /a LINES=LINES+1
)
:: Print the last 10 lines (suggestion to use more courtsey of dmityugov)
set /a LINES=LINES-10
more +%LINES% < data.txt
This answer combines the best features of already existing answers, and adds a few twists.
The solution is a simple batch implementation of the tail command.
The first argument is the file name (possibly with path information - be sure to enclose in quotes if any portion of path contains spaces or other problematic characters).
The second argument is the number of lines to print.
Finally any of the standard MORE options can be appended: /E /C /P /S /Tn. (See MORE /? for more information).
Additionally the /N (no pause) option can be specified to cause the output to be printed continuosly without pausing.
The solution first uses FIND to quickly count the number of lines. The file is passed in via redirected input instead of using a filename argument in order to eliminate the printout of the filename in the FIND output.
The number of lines to skip is computed with SET /A, but then it resets the number to 0 if it is less than 0.
Finally uses MORE to print out the desired lines after skipping the unwanted lines. MORE will pause after each screen's worth of lines unless the output is redirected to a file or piped to another command. The /N option avoids the pauses by piping the MORE output to FINDSTR with a regex that matches all lines. It is important to use FINDSTR instead of FIND because FIND can truncate long lines.
:: tail.bat File Num [/N|/E|/C|/P|/S|/Tn]...
::
:: Prints the last Num lines of text file File.
::
:: The output will pause after filling the screen unless the /N option
:: is specified
::
:: The standard MORE options /E /C /P /S /Tn can be specified.
:: See MORE /? for more information
::
#echo OFF
setlocal
set file=%1
set "cnt=%~2"
shift /1
shift /1
set "options="
set "noPause="
:parseOptions
if "%~1" neq "" (
if /i "%~1" equ "/N" (set noPause=^| findstr "^") else set options=%options% %~1
shift /1
goto :parseOptions
)
for /f %%N in ('find /c /v "" ^<%file%') do set skip=%%N
set /a "skip-=%cnt%"
if %skip% lss 0 set skip=0
more +%skip% %options% %file% %noPause%
You should probably just find a good implementation of tail. But if you really really insist on using CMD batch files and want to run on any NT machine unmolested, this will work:
#echo off
setLocal EnableDelayedExpansion
for /f "tokens=* delims= " %%a in (c:\tmp\foo.txt) do (
set var9=!var8!
set var8=!var7!
set var7=!var6!
set var6=!var5!
set var5=!var4!
set var4=!var3!
set var3=!var2!
set var2=!var1!
set var1=!var!
set var=%%a
)
echo !var9!
echo !var8!
echo !var7!
echo !var6!
echo !var5!
echo !var4!
echo !var3!
echo !var2!
echo !var1!
echo !var!
There are several windows implementations of the tail command. It should be exactly what you want.
This one sounds particularly good:
http://malektips.com/xp_dos_0001.html
They range from real-time monitoring to the last x lines of the file.
Edit: I noticed that the included link is to a package It should work, but here are some more versions:
http://www.lostinthebox.com/viewtopic.php?f=5&t=3801
http://sourceforge.net/projects/tailforwin32
If file is too large it can take too long to get count of lines
another way is to use find and pass it a nowhere string
$find /v /c "%%$%!" yourtextfile.txt
this would result an output like this
$---------- yourtextfile.txt: 140
then you can parse output using for like this
$for /f "tokens=3" %i in ('find /v /c "%%$%!" tt.txt') do set countoflines=%i
then you can substract ten lines from the total lines
After trying all of the answers I found on this page none of them worked on my file with 15539 lines.
However I found the answer here to work great. Copied into this post for convenience.
#echo off
for /f %%i in ('find /v /c "" ^< C:\path\to\textfile.txt') do set /a lines=%%i
set /a startLine=%lines% - 10
more /e +%startLine% C:\path\to\textfile.txt
This code will print the last 10 lines in the "C:\path\to\textfile.txt" file.
Credit goes to OP #Peter Mortensen
using a single powershell command:
powershell -nologo "& "Get-Content -Path c:\logFile.log -Tail 10"
applies to powershell 3.0 and newer
I agree with "You should use TAIL" answer. But it does not come by default on Windows. I suggest you download the "Windows 2003 Resource Kit" It works on XP/W2003 and more.
If you don't want to install on your server, you can install the resource kit on another machine and copy only TAIL.EXE to your server. Usage is sooooo much easier.
C:\> TAIL -10 myfile.txt
Here's a utility written in pure batch that can show a lines of file within a given range.To show the last lines use (here the script is named tailhead.bat):
call tailhead.bat -file "file.txt" -begin -10
Any ideas how to echo or type the last
10 lines of a txt file?
The following 3-liner script will list the last n lines from input file. n and file name/path are passed as input arguments.
# Script last.txt
var str file, content ; var int n, count
cat $file > $content ; set count = { len -e $content } - $n
stex -e ("["+makestr(int($count))) $content
The script is in biterscripting. To use, download biterscripting from http://www.biterscripting.com , save this script as C:\Scripts\last.txt, start biterscripting, enter the following command.
script last.txt file("c:\log09.txt") n(10)
The above will list last 10 lines from file c:\log09.txt. To list last 20 lines from the same file, use the following command.
script last.txt file("c:\log09.txt") n(20)
To list last 30 lines from a different file C:\folder1\somefile.log, use the following command.
script last.txt file("C:\folder1\somefile.log") n(30)
I wrote the script in a fairly generic way, so it can be used in various ways. Feel free to translate into another scripting/batch language.