The NCERT (National Council of Educational Research and Training) syllabus for Class 10 in India covers several subjects. Here is an overview of the key subjects and topics:1. Mathematics1: Real Numbers2: Polynomials3: Pair of Linear Equations in Two Variables4: Quadratic Equations5: Arithmetic Prog

Bhagat Singh (1907–1931) was an influential Indian revolutionary who played a pivotal role in the fight against British colonial rule. Born into a Sikh family in Banga, Punjab (now in Pakistan), Bhagat Singh grew up in a politically charged environment; his family was deeply involved in India's st

A repeater operates at physical layer. It is two port device.  Repeaters extend the network segment by regenerating the signal from one segment to the next. Repeaters regenerate baseband, digital signals over the same network before the signal becomes too week or corrupt. Repeater does not ampl

# Display messages in kernel ring buffer.dmesg# Display logs stored in the systemd journal.journalctl# Display logs for a specific unit (service).journalctl -u servicename

# Change the current user's password.passwd# Switch to the root account with root's environment. (Login shell.)sudo -i# Execute your current shell as root. (Non-login shell.)sudo -s# List sudo privileges for the current user.sudo -l# Edit the sudoers configuration file.visudo# Display the current SE

# To go up one level of the directory tree.  (Change into the parent directory.)cd ..# Go to the $HOME directorycd# Change to the /etc directorycd /etc

# Show free and used space on mounted filesystemsdf -h# Show free and used inodes on mounted filesystemsdf -i# Display disks partitions sizes and typesfdisk -l# Display disk usage for all files and directories in human readable formatdu -ah# Display total disk usage off the current directorydu -sh&n

# Secure copy file.txt to the /tmp folder on serverscp file.txt server:/tmp# Copy *.html files from server to the local /tmp folder.scp server:/var/www/*.html /tmp# Copy all files and directories recursively from server to the current system's /tmp folder.scp -r server:/var/www /tmp# Synchronize /ho