Removing space from variable in batch file

batch-file

5,520

How can I remove the leading space from a variable?

Use the following batch file (test.cmd):

@echo off
setlocal enabledelayedexpansion
FOR /F "tokens=2 delims=:" %%G IN ('netsh wlan show profiles') DO (
  SET _temp=%%G
  SET wifiname=!_temp:~1!
  netsh wlan show profile name="!wifiname!" key=clear
)
endlocal

Example output:

> test
Profile virginmedia3954038 on interface Wireless Network Connection:
=======================================================================
Applied: All User Profile
Profile information
-------------------
    Version                : 1
    Type                   : Wireless LAN
    Name                   : virginmedia3954038
    Control options        :
        Connection mode    : Connect automatically
        Network broadcast  : Connect only if this network is broadcasting
        AutoSwitch         : Do not switch to other networks

...

5,520

Jerry

Updated on September 18, 2022

Comments

Jerry 3 months
Why is variable wifiname empty in show profile command?
```
FOR /F "tokens=2 delims=:" %%G IN ('"netsh wlan show profiles"') DO (
Set myvar=%%G
SET wifiname=%myvar:~1%
@echo '%%G'
@echo '%wifiname%'
netsh wlan show profile name="%wifiname%" key=clear >> wp.txt
)
```
If I pass %%G directly (without double quotes), it is working excluding networks with multiple words delimited with space. Leading space is ignored.

With double quotes, full network name is passed, byt leading space is problem for each network name...

Simplest solution - remove leading space from %%G and pass this result in double quotes to the final command... How?
Jerry almost 4 years

works, any clear explanation when use % or %% or %_% or ! and etc.?
DavidPostill almost 4 years

@Jerry See the last two links I added.