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lshw (list hardware) command is a small tool that generates detailed reports about various hardware components, including CPU version, memory configuration, cache information, bus speed, etc. on the system. lshw command is able to do so because it reads various files located in the /proc directory. To display complete information you must be root user

lscpu lscpu –help lscpu –version lscpu -e lscpu –extended lscpu -e=cpu,core lscpu -x lscpu -J lscpu -e -b

lsof lsof –help lsof -u ubuntu lsof -u ^root lsof -R lsof -p 10 lsof -p ^10    

locate locate –help locate –version sudo updatedb locate mysql locate .bashrc locate *.txt locate -n 5 *.txt locate -c .txt locate -e *.txt locate -0 mysql

Less command in Linux is used to read the contents of a text file one page at a time at the terminal. It is useful for reading large text file because it accesses the file page by page rather than loading the complete file. This results in faster loading and the file can be browsed

history command in Linux is a built-in shell tool used to display the previously executed command in terminal. By default, it will display the 500 most recent commands, beginning with the oldest. It is possible for users to reuse any listed command without having to type it again. In this tutorial, you will learn about history