Change default directory for Windows command prompt and Powershell when running with admin privileges

 Hi all,

It's been a while since I posted things.

Here is my previous post where the non-admin user changes the default directory for the command prompt and PowerShell.

https://psrdotcom.blogspot.com/2022/03/change-default-directory-of-windows.html

But in this post, I will be explaining about running the command prompt / powershell with admin rights and setting the default directory. Because, when you are running with admin privileges, it by default goes to the SYSTEM32 folder of Windows.

Environment

I use the command prompt and PowerShell, which are pinned to the taskbar of Windows.

Run the application with the admin rights

• Right-click on the application icon -> click on Properties
• Go to the "Compatibility" tab
• Check "Run this program as administrator"

Run the shortcut with the admin rights

• Right-click on the shortcut icon -> click on Properties
• Go to the "Shortcut" tab
• Click on the "Advanced" button
• Check "Run this program as administrator"

Change the command prompt default directory

• We need to have a .bat file with the following content
• @echo off
• cd <default_directory>

Now use the .bat file in the shortcut properties

• Right-click on the shortcut icon -> click on Properties
• Go to the "Shortcut" tab
• In the "Target" field append the below text
• /k "batfile_dirpath\batfile.bat"

Change the PowerShell default directory

• Right-click on the shortcut icon -> click on Properties
• Go to the "Shortcut" tab
• In the "Target" field append the below context after powershell.exe

• -NoExit -command "& {Set-Location <default_directory>}"

• Click on "OK"

Hope, this helps you to reduce the frequent directory changes in the command prompt and PowerShell.

Feel free to provide your valuable feedback and comments to psrdotcom@gmail.com

Base 64 Encode with Powershell Script

 Hi all,

Today I will explain the snippet which gives you a base 64 encoded string

$enc = [system.Text.Encoding]::UTF8

$guid = "42f930c2-2ba2-4d5a-a102-898321122414"

$base64encodedstring = [System.Convert]::ToBase64String($enc.GetBytes($guid))

Write-Host "bBse64 Encoded String: $base64encodedstring"

Hope this helps when you are planning to generate and use/store the base64 encoded value

Change IP Address and DNS from static to DHCP and vice versa in Windows Command Line Dynamically using Batch file script

Hi friends,

I was frequently changing my system network from static to dynamic.

I was fed-up with the manual changes by entering the static IP address and changing it to dynamic.

I though of creating a batch file, which requests user to select options and proceed further.

 

I found something on Internet, just modified it for my purpose and thought of sharing with you all.

 

• Check your network name
• cmd> netsh interface show interface
• It will list all the network interfaces connected to your system
• Select the network which you want to change the settings
• Modify the below code with appropriate network name, IP address, subnet, gateway and DNS server

@echo off

set NETWORK="Local Area Connection"
set IP=10.9.40.95
set SUBNET=255.255.255.0
set GATEWAY=10.9.40.47
set DNSSERVER=192.168.178.1

echo Choose:
echo [S] Set Static IP
echo [D] Set DHCP
echo.

:choice
SET /P C=[S,D]?
for %%? in (S) do if /I "%C%"=="%%?" goto S
for %%? in (D) do if /I "%C%"=="%%?" goto D
goto choice

:S
@echo off
echo "Setting Static IP Address, Subnet Mask and DNS Server"
netsh interface ip set address %NETWORK% static %IP% %SUBNET% %GATEWAY% 1
netsh interface ip set dnsservers %NETWORK% static %DNSSERVER% primary
netsh interface ip show config
pause
goto end

:D
@echo off
echo "Resetting IP Address, Subnet Mask and DNS server For DHCP"
netsh interface ip set address name=%NETWORK% dhcp
netsh interface ip set dns %NETWORK% dhcp
ipconfig /renew

echo "New IP Address, Subnet Mast and DNS Server for %computername%:"
netsh interface ip show config
pause
goto end

:end

Now enjoy the feature of changing IP address with 3 clicks

 

Please send your feedback and comments to psrdotcom@gmail.com

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Text Formatting in *NIX to run Script files of Different Platforms

Hello all,

While writing shell scripting in Ubuntu, Windows and deploying it in *NIX based machine, we found some issue. That the file running perfectly on the Ubuntu (Linux), Windows machine. The same script was displaying errors like

'\r': command not found

^M: command not found

There was a formatting issue. You need to run the following command to resolve it.

DOS2UNIX

Installation:
sudo apt-get install tofrodos

Syntax: 
dos2unix filename

Example:
dos2unix script1.sh

To know more about this you can go through References.

References:
http://linuxcommand.org/man_pages/dos2unix1.html
http://www.thefreecountry.com/tofrodos/

If you have any further queries, please add your comments. You can also mail to psrdotcom@gmail.com

Porteus Linux : Make USB Pen Drive Bootable Sctipt Execution Problem With Solution

Hi all,

Today I have come across one interesting problem with the Porteus Linux.

I formatted my USB drive with ext2 filesystem.

I was trying to make USB drive bootable by executing lin_start_here.sh, after installing the Porteus.
It was displaying the md5 checksum computation error. But I am sure that, md5 checksum is correct, Because I have already executed the porteus/chkbase.sh separately

So, I have reviewed the code of lin_start_here.sh and I come to know the it is executing the boot/syslinus/bootextlinux.sh. I also reviewed the bootextlinux.sh and I come to know that, it is trying to execute the following command.

pushd ../porteus --Change to the porteus directory and maintain the stack of dirs
sh chkbase.sh -- Results error
popd --Pops the porteus directory from stack and comes to its previous directory


Please give write file permission to boot/syslinus/bootextlinux.sh and then


Please modify it as following
pushd ../porteus
./chkbase.sh
popd


Now run the following commands
cd boot
./lin_start_here.sh

 Please write your feedback and comments to psrdotcom@gmail.com

Running job in regular intervals or daily in Linux to delete files or modifying files

Running scripts daily to perform some common tasks in Linux

Be in root mode, super user mode

1) Create a script with the name filename.sh or any other name whatever you like

2) Do any one of the following .. but please test it with some other file extension like .yourname or something .. create your own unique files and do the testing before executing on original files which may be important.

   

   find /folderpath -type f -iname "*.fileextension" | xargs -i '{}' rm -rf {}

   (or)
   find /folderpath -type -f -iname "*.fileextension"  -exec /bin/rm -rf {} \;

3) chmod +x filename.sh

4) crontab -e

    i) press i to go into insert mode

    ii) enter 30 20 * * 1-5 /bin/bash /fullpath        

                      //30 min 20 hour i.e 8:30pm on 1-5(mon-fri) on *(every month) on *(every year)

    iii) shift+ZZ to save the file

5) Try this and let me know if any modifications needed

For further details, contact me psrdotcom@gmail.com