batch-file interview questions
Top batch-file frequently asked interview questions
I need to pass id and password to a cmd (or bat) file at the time of running rather than hardcoding them into the file.
Here's what the command line looks like:
test.cmd admin P@55w0rd > test-log.txt
Source: (StackOverflow)
I find %~dp0 very useful, and I use it a lot to make my batch files more portable.
But the label itself seems very cryptic to me... what is the ~ doing? does dp mean drive and path? does the 0 refer to %0, the path to the batch file that includes the file name?
Or is it just a weird label?
I'd also like to know if it is a documented feature, or something prone to be deprecated.
Source: (StackOverflow)
I'd like to find a Windows batch counterpart to Bash's $@ that holds a list of all arguments passed into a script.
Or I have to bother with shift?
Source: (StackOverflow)
How can I script a bat or cmd to stop and start a service reliably with error checking (or let me know that it wasn't successful for whatever reason)?
Source: (StackOverflow)
I'm looking at a batch file which defines the following variables:
set _SCRIPT_DRIVE=%~d0 set
set _SCRIPT_PATH=%~p0
What do %~d0 or %~p0 actually mean? Is there a set of well-known values for things like current directory, drive, parameters to a script? Are there any other similar shortcuts I could use?
Source: (StackOverflow)
I'm trying to declare and use a variable in my batch file. It looks like it should be simple.
@ECHO OFF
SET location = "bob"
ECHO We're working with "%location%"
The output I get is:
We're working with ""
What's going on here? Why is my variable not being echo'd?
Source: (StackOverflow)
I want to create a couple of batch files to automate some thing.
My question is when I create a batch file. What is the current directory?
Is it the directory where the file is located or is it the same directory that appears in cmd?
Source: (StackOverflow)
This question already has an answer here:
I need to run a utility only if a certain file exists. How do I do this in Windows batch?
Source: (StackOverflow)
Can someone tell me, what command to put at the end of a batch file to prevent auto-closing of console after the execution of file?
Source: (StackOverflow)
I have a Windows .bat file which I would like to accept user input and then use the results of that input as part of the call to additional commands.
For example, I'd like to accept a process ID from the user, and then run jstack against that ID, putting the results of the jstack call into a file. However, when I try this, it doesn't work.
Here's my sample bat file contents:
@echo off
set /p id=Enter ID:
echo %id%
jstack > jstack.txt
and here's what shows up in jstack.txt:
Enter ID: Terminate batch job (Y/N)?
Source: (StackOverflow)
I am writing a batch file script using Windows command-line environment and want to change each occurrence of some text in a file (ex. "FOO") with another (ex. "BAR"). What is the simplest way to do that? Any built in functions?
Source: (StackOverflow)
Can anybody tell me how to do the following in in a DOS batch script? (*.bat):
- Create a folder only if it doesn't already exist
In more detail, I want to create a folder named VTS on the C:\ drive, but only if that folder doesn't already exist. I don't want to overwrite the contents of the folder if it already exists and the batch is executed...
Source: (StackOverflow)
How can I run a command-line application in the Windows command prompt and have the output both displayed and redirected to a file at the same time?
If, for example, I were to run the command dir > test.txt, this would redirect output to a file called test.txt without displaying the results.
How could I write a command to display the output and redirect output to a file in the Windows command prompt, similar to the tee command on Unix?
Source: (StackOverflow)
Can somebody remember what was the command to create an empty file in MSDOS using BAT file?
Source: (StackOverflow)