The main purpose of the w command is to monitor users. w command in Linux displays currently logged-in users and what they are doing. It also shows the system load average, login time, idle time, from where users are logged in etc. In this tutorial you will learn about w command in Linux/Unix and use […]
w command in Linux/Unix, Uses of w command with example Read More »
free command in Linux displays the summary of RAM usage. It shows the information about the total amount of used, free, swap and buffers memory. In this tutorial, you will learn about free command in Linux/Unix and uses of free command with examples. Syntax of free command free [OPTIONS] Options available with free command To know
free command in Linux/Unix, Uses of free command with example Read More »
factor command in Linux is used to print the prime factor of any given number. In this tutorial, you will learn factor command in Linux/Unix and uses of factor command with example. Prime factor: A factor which is a prime number and not a composite number is a prime factor. Prime Number: A number that can
factor command in Linux/Unix, Uses of factor command with example Read More »
id –help id –version id id -u id -g id -G id -un id -ur id -znG id programbr id -G programbr id -g programbr id -u programbr id -ng programbr id -nu programbr id -nG programbr
id command in Linux/Unix, Uses of id command with example Read More »
iostat command is used to find CPU usage and other connected Input/Output devices. iostat command is useful for evaluating the performance of I/O devices, and their efficiency. It is also helpful for monitoring CPU Usage. How to Install iostat command? By default, iostat command is already installed in Linux/Unix. If it is not installed, you
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SQL keywords are not case-sensitive which means SELECT is the same as select. Database and Table names may be case-sensitive, that depends on the operating system. This means database and table names are case-sensitive on Linux/Unix operating systems and case-insensitive on Windows operating systems. Comments in SQL Comments are ignored by database engine. We write
SQL (Structured Query Language) is a standard query language for storing, managing and retrieving data in relational database management system. What is Relational Database Management System A relational Database Management System (RDBMS) is a database management system that is based on the relational model and used to interact with a relational database. RDBMS is based
SQL (Structured Query Language) is a standard query language for storing, managing and retrieving data in relational database management system. SQL is not a database system, it is a query language. It is pronounced as S-Q-L or sometimes as See-Quell. Applications of SQL SQL allows users to access and manipulate databases. SQL allows users to
comm command is used in Linux to compare two sorted files line by line and returns the unique lines and common lines of the files in separate columns. Syntax for comm command comm [option] file1 file2 Here is a list and contents of text files, used for comm command in this tutorial. Uses of comm command
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cmp command in Linux is used to compare the content of two files byte by byte and reports the first byte and line number where they differ. Syntax of cmp command cmp [options] file1 file2 Here is a list and contents of text files, used for cmp command in this tutorial. Compare two files cmp
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