how to set environment variable from file contents?

windows shell batch-file cygwin windows-shell
sramij picture sramij · Jan 7, 2012 · Viewed 27.4k times · Source

On windows/cygwin, i want to be able save the PATH variable to file on one machine and load it onto the other machine;

for storing the variable i am doing:

echo %PATH% > dat

however, not sure how to load it later.

set PATH=???????

Thanks Rami

Answer

Aacini picture Aacini · Jan 11, 2012

Just use: set /P PATH=< dat

You must note that echo %PATH% > dat insert an additional space after %PATH% value; that space may cause problems if an additional path is later added to PATH variable. Just eliminate the extra space this way: echo %PATH%> dat.

Related questions

How to run a PowerShell script from a batch file

I am trying to run this script in PowerShell. I have saved the below script as ps.ps1 on my desktop. $query = "SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2" Register-WMIEvent -Query $query -Action { invoke-item "C:\Program Files\abc.exe"} I have …

Read More
What is the proper way to test if a parameter is empty in a batch file?

I need to test if a variable is set or not. I've tried several techniques but they seem to fail whenever %1 is surrounded by quotes such as the case when %1 is "c:\some path with spaces". IF NOT %1 GOTO MyLabel // …

Read More
Windows batch: sleep

How do I get a Windows batch script to wait a few seconds? sleep and wait don't seem to work (unrecognized command).

Read More