Yesterday I was working at client site. It is a Windows server isolated from external network. It is not allowed to install any third party software in the machine. However, I got a task in hand to replace all xml files name from “My Report” to “My Report (New)”. The original file temp.xml looks like this:
I have no tools in hand and it would takes many hours to replace hundreds of files one by one manually. The only thing accessible for scripting is the PowerShell. Here are a few lines of code to get things done.
Yesterday I was working at client site. It is a Windows server isolated from external internet access and prohibited to install any new software. I got a task in hand to remove all yaml files id to null. For example, the input file temp.yaml looks like this:
something id: 4 something else id: 64 next one id: 231 another one id: 34
and the target file(result.yaml) I want would be like this:
something id: somthing else id: next on id: another one id:
It is a huge file and it would takes a long time to remove each id number one by one manually. The only tool accessible on that windows server machine is a CMD command prompt, therefore we could write a simple batch script to get the job done. Create a file called convert.bat with text editor like this:
@echo off (for /f "tokens=1* delims=:" %%a in (temp.yaml) do ( if "%%b"=="" (echo %%a) else ( echo %%a|find " id" >null&& echo %%a: ||echo %%a: %%b ) ))>result.yaml
You can replace the text temp.yaml and result.yaml in the script to your target input and output file respectively. Double click to execute the script and you are done!
For those who are not familiar with Batch script, here are some basic explanation:
@echo off means to get rid of that C:Download prompt
The for loop has some option, where tokens= specify which numbered items to read from each line (default =1) and delims= specify the delimiter character (default = a space). The %%paramater are variables similar to arguments to batch files. The last line export the result to the file I want. It saves a lot of time with this simple script instead of doing manual work 🙂