Writing a batch file in unix

How to write a batch file for windows that starts cygwin tool and runs unix scripts User Name Password Programming This forum is for all programming questions. The question does not have to be directly related to Linux and any language is fair game. Notices Welcome to LinuxQuestions.

Writing a batch file in unix

On this page I'll try to explain how redirection works. To illustrate my story there are some examples you can try for yourself.

writing a batch file in unix

For an overview of redirection and piping, view my original redirection page. Hello world When I say "on screen", I'm actually referring to the "DOS Prompt", "console" or "command window", or whatever other "alias" is used.

Streams The output we see in this window may all look alike, but it can actually be the result of 3 different "streams" of text, 3 "processes" that each send their text to thee same window.

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Standard Output Standard Error Console Standard Output is the stream where all, well, standard output of commands is being sent to. Standard Error is the stream where many but not all commands send their error messages.

And some, not many, commands send their output to the screen bypassing Standard Output and Standard Error, they use the Console. By definition Console isn't a stream. There is another stream, Standard Input: Probably the most familiar example is MORE: Redirection You may be familiar with "redirection to NUL" to hide command output: Now try this note the typo: COM isn't possible actually it is, by using the CTTY command, but that would redirect all output including Console, and input, including keyboard.

Hello world You see? Now make a typo again: EXE and watch the result: We'll see how we can use this later. Ok, now that we get the idea of this concept of "streams", let's play with it. Copy the following code into Notepad and save it as "test. EXE, and this is what you'll get: Nothing new so far.

But the next one is new: It is said Console cannot be redirected, and I believe that's true.Even the crippled DOS batch file language allowed writing some fairly powerful scripts and applications, though they often required extensive kludges and workarounds.

Occasionally, the need still arises to convert an old DOS batch file to a UNIX shell script. Paste the contents of your Windows public key into this file, then save and close the file Next, create a scheduled task on the Linux server to keep "myfile" updated every 30 minutes.

Open a text editor and place the contents of your script in the file e.g.

"vi pfmlures.com". I a new to bash but I am trying to write a bash script which does the following: write_to_file() { #check if file exists # if not create the file # else open the file to edit # go in a while loop # ask input from user # write to the end of the file # until user types ":q" }.

The runas command should prompt you for the credentials when you run the batch file to execute the specified pfmlures.com long as you run it in pfmlures.com is due to the need for the standard input neccessary to prompt for the password.

You cannot just double click it.

writing a batch file in unix

Appendix N. Converting DOS Batch Files to Shell Scripts. Quite a number of programmers learned scripting on a PC running DOS.

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Even the crippled DOS batch file language allowed writing some fairly powerful scripts and applications, though they often required extensive kludges and workarounds.

Guide to Windows Batch Scripting. Mar 1 st, | Comments. I’ll be the first to admit the Unix shells of the world are far superior to the Windows command prompt (or even Windows PowerShell).

Commands in a shell script are not printed by default, as in a batch file. The filename's extension can pfmlures.com or (more customary) you don't need to use an extension. Put #!/bin/bash on the very first line of the file, which tells Ubuntu what program to use to run the file. This book describes and shows how to use the Microsoft-supplied command interpreter pfmlures.com and the associated commands, and how to write Windows batch scripts for the interpreter. pfmlures.com is the default interpreter on Windows NT, Windows XP, Windows Vista, Windows 7 and later. Paste the contents of your Windows public key into this file, then save and close the file Next, create a scheduled task on the Linux server to keep "myfile" updated every 30 minutes. Open a text editor and place the contents of your script in the file e.g. "vi pfmlures.com".

Windows is a fact of life for most professionals writing code for coporate customers; this series aims to make life with Windows a little easier.

How to write a batch file for windows that starts cygwin tool and runs unix scripts