Commands
get current OS version
echo "Current OS version"
echo "OS version"
uname -a
ten processes in descending order
echo "Top 10 processes"
ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head
highest memory consuming process
echo "Highest memory usage"
ps aux | sort -nk +4 | tail
curent user
echo "Current user and logname"
whoami
id -nu
path
echo "Current shell"
echo $SHELL
echo "Current Home directory"
echo $HOME
echo "Current Path"
echo $PATH
echo "Current working directory"
pwd
refer to Shell Scripting for theory