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How in my batch I can echo. ONLY if the previous line outputted is non-empty ? As you understood I want to avoid to have 2 /n/n
Write a function for echo, that remember if the last line was empty.
#echo off
call :func1
call :func2
:func1
call :echo "Func1"
call :echo ""
call :echo ""
exit /b
:func2
call :echo ""
call :echo "Func2"
exit /b
:echo
set "text=%~1"
setlocal EnableDelayedExpansion
if "!text!!last_line!" NEQ "" (
echo(!text!
)
endlocal
set "last_line=%~1"
exit /b
Output:
Func1
Func2
Related
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I have a variable %data% in a Windows batch file which has variable information in the following format:
URL_A
TEXT
URL_B
So essentially, three strings separated by two newline characters. The length of each string varies on each run. I need to split these three lines into three separate variables. The FOR command seemed promising but there doesn't seem to be a way to specify a newline delimiter for the delim= option.
EDIT (as requested by #Compo):
Here is the batch file's syntax:
play_vid.bat -stream <VID_HEIGHT> <START-TIME> <URL>
Here is the command that generates the %data% variable in my batch file (requires youtube-dl to be installed within the %PATH% environment variable to work):
FOR /F "skip=1 delims=" %%a IN ('youtube-dl --get-title -g -f "bestvideo[height<=%2][fps<=30],worstaudio" --no-playlist "%4"') DO #set data=%%a
Here is a sample command with all the batch variables resolved so that it can be run directly from cmd to test and view the contents of the %data% variable:
FOR /F "skip=1 delims=" %a IN ('youtube-dl --get-title -g -f "bestvideo[height<=1080][fps<=30],worstaudio" --no-playlist "https://www.youtube.com/watch?v=ltynWs_LtIw"') DO #echo %a
For this particular example, %data% will contain:
https://manifest.googlevideo.com/api/manifest/dash/expire/1592941694/ei/HgjyXvilD4ndwQG3nrzoBg/ip/[redacted]
How To Stabilize GoPro Video for Free with FFMPEG
https://manifest.googlevideo.com/api/manifest/dash/expire/1592941694/ei/HgjyXvilD4ndwQG3nrzoBg/ip/[redacted]
that is,
line 1: The URL of the video (DASH) stream.
line 2: The title of the video.
line 3: The URL of the audio (DASH) stream.
The for /F command is intended to loop through lines, so line-breaks as delims option would not make much sense. Anyway, you could combine for /F with if defined:
#echo off
rem // Initially clear variables:
set "ONE=" & set "TWO=" & set "THREE="
rem // Read file line by line (note that `eol=;` by default):
for /F "usebackq delims=" %%L in ("data.txt") do (
if not defined ONE (
rem // This section is entered in the 1st iteration:
set "ONE=%%L"
) else if not defined TWO (
rem // This section is entered in the 2nd iteration:
set "TWO=%%L"
) else (
rem // This section is entered in the 3rd iteration (and further):
set "THREE=%%L"
)
)
echo Line 1: %ONE%
echo Line 2: %TWO%
echo Line 3: %THREE%
As an alternative, you could assign a pseudo-array, like this:
#echo off
rem // Initially clear pseudo-array variables:
for /F "delims== eol==" %%V in ('set $LINE[ 2^> nul') do set "%%V="
rem // Read file line by line, precede each one with line number + `:`:
for /F "tokens=1* delims=:" %%K in ('findstr /N "^" "data.txt"') do (
rem // Assign pseudo-array element with line number as index:
set "$LINE[%%K]=%%L"
rem // Conditionally leave loop (optionally):
if %%K geq 3 goto :NEXT
)
:NEXT
rem // Return result:
set $LINE[
For more information on that topic, refer to this comprehensive answer: Arrays, linked lists and other data structures in cmd.exe (batch) script
I don't know if you mean something like this ?
#echo off
<test.txt (
set /p Var1=
set /p Var2=
set /p Var3=
)
echo Var1=%Var1%
echo Var2=%Var2%
echo Var3=%Var3%
pause
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I need to do a bat script to process file one by one, according to a number in the filename. Here is an example of what I can get :
CDEP_0003.pdf
CIM_0001.pdf
ESCALE_0002.pdf
It's possible to loop and process each of those files in an ordered way using regex or something like this to exclude the number and use it as a loop index ? (0001, 0002, 0003 etc..)
Simply loop through .*0000\.pdf$ to .*9999\.pdf$ using another answer on how to loop through files matching wildcard in batch file
You could
build an array of used numbers by first iterating through the files, or
use a counting loop (for /l) from 10000 to 19999 to have the
leading zeros and take the last 4 digits..
Provided there is only one underscore preceding the number:
#Echo off
Pushd "X:\folder\to\start"
::clear array
for /f "delims==" %%A in ('Set No[ 2^>Nul') do Set "%%A="
:: fill array
for /f "tokens=2delims=_." %%A in (
'Dir /B "*_????.pdf" ^| findstr "^.*_[0-9][0-9][0-9][0-9]\.pdf$"'
) Do Set /A "No[%%A]=%%A"
:: process existing numbers
for /f "tokens=2 delims=[]" %%A in ('Set No[ 2^>Nul') do (
Rem dir "*_%%A.pdf" or whatever you want to do
)
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I need to make windows batch script to rename files that have random names. I have a folder with thousand .txt files, their names are completely random,
I want to rename first 5 files in that folder to file1.txt, file2.txt,file3.txt, file4.txt,file5.txt.
Help appreciated.
Is this okay?
#ECHO OFF
(SET f=C:\Test)
IF /I "%CD%" NEQ "%f%" PUSHD "%f%" 2>NUL||EXIT/B
SET "i=5"
FOR %%A IN (*.txt) DO CALL :SUB "%%A"
EXIT/B
:SUB
IF %i% GTR 0 REN %1 File%i%.txt
SET/A i-=1
Just change line two if your stated directory path\name has changed.
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The windows that I am trying to minimise are already running so start /min is not an option.
It can be done with an vbscript hybrid.
#echo off
set "lookFor=Calculator"
for /f "tokens=2 delims=," %%A in ('tasklist /nh /fo csv /fi "WINDOWTITLE eq %lookfor%"') do set "pid=%%~A"
>"%TEMP%\_edit.vbs" (
echo/Set oShell = CreateObject("WScript.Shell"^)
echo/oShell.AppActivate %pid%
echo/WScript.Sleep 500
echo/oShell.SendKeys "%% (n)" ' minimize (Alt+SpaceBar,n^)
)
start /B cmd /C "CScript //nologo //E:vbs "%TEMP%\_edit.vbs" & rem del /F /Q "%TEMP%\_edit.vbs" 2>NUL"
exit/B
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I have few mp3 files that have external site names say www.mymusic.com and that name will be either at the start/end of the mp3 file
Examples:
01 - {www.mymusic.com} Hello Hello.mp3,
02 - {www.mymusic.com} Hai Hai.mp3,
03 - Hello Boys [www.musicworld.in].mp3,
04 - Hello girls [www.musicworld.in].mp3
So I want a (windows) batch script which asks me to enter a name with special characters say "[www.musicworld.in]" and removes it from multiple mp3 files present in a directory.
Also give me an example how to use/run the code.
Please help :)
Thanks in advance
The code works immediately!
#echo off &SETLOCAL enabledelayedexpansion
SET /p "word=enter word to remove: "
IF "%word%"=="" GOTO :EOF
FOR /f "delims=" %%a IN ('dir /a-d /b "*%word%*.mp3"') DO (
SET "fname=%%~na"
SET "fname=!fname:%word%=!"
IF NOT "!fname!"=="" REN "%%~a" "!fname!%%~xa"
)
This is a batch file that can help you - it uses a helper batch file called repl.bat from http://www.dostips.com/forum/viewtopic.php?f=3&t=3855
At the moment it only echos the REN command so remove echo if you are happy with the result. One benefit with this is that ! characters are not an issue as they are with delayed expansion.
#echo off
set /p "var=Enter the text to remove: "
for /f "delims=" %%a in ('dir *.mp3 /b /a-d ^|repl "^(.*)%var%(.*)" "ren \x22$&\x22 \x22$1$2\x22" x ') do echo %%a