How to change default shell from dash to bash in ubuntu
Ubuntu 6.10 onwards the default shell was changed from bash to dash. If we want the bash to be the default shell in Ubuntu then following command will reset it back to bash shell safely.
Code signing is a macOS security technology that you use to certify that an app was created by you. Once an app is signed, the system can detect any change to the app—whether the change is introduced accidentally or by malicious code. As Apple Developer site says ( click here for more details on code signing) : code signing allows the operating system to: Ensure that a piece of code has not been altered since it was signed. The system can detect even the smallest change, whether it was intentional (by a malicious attacker, for example) or accidental (as when a file gets corrupted). When a code signature is intact, the system can be sure the code is as the signer intended. Identify code as coming from a specific source (a developer or signer). The code signature includes cryptographic information that unambiguously points to a particular author. Determine whether code is trustworthy for a specific purpose. Among other things, a developer can use a ...
Root user login in gnome is disabled on Debian system by default for security reasons. If you want to enable it for specific reasons then follow the below steps : 1. Login into Debian system 2. launch the Root Terminal from Applications -> Accessories. 3. Authenticate with password to launch the Root Terminal. 4. Open "/etc/pam.d/gdm3" with vi. #vi /etc/pam.d/gdm3 5. Look for "auth required pam_succeed_if.so user != root quiet_success" , comment it out as below. #auth required pam_succeed_if.so user != root quiet_success 6. Save the modification with Esc+w+q+Enter keystroke. 7. Restart or reboot Debian system. 8. Login with root user in gnome. You should be now able to login successfully.
Firmware and boot ROM version of your mac can be found in two ways. Way 1 : 1. From "Apple" menu , choose "About This Mac" menu item. 2. Click " More Info " to open "System Profiler" application. 3. Under Contents -> Select Hardware Tree item. On the right side panel Under hardware overview section, we can see Boot ROM Version and SMC (Firmware) Version. Way 2 : Run the below command in terminal to get boot ROM version and SMC(firmware) version : $ system_profiler SPHardwareDataType | grep -i "Version" | awk -F ':' '{print $1 $2}'
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