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System Information Commands

System information commands in Linux provide details about the system hardware, software, and configurations. They help you gather information about your system’s specifications, resources, and running processes. Here are some commonly used system information commands:

`uname -r`(” is used to display the kernel release information in Linux.)

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The command “uname -r” is used to display the kernel release information in Linux. It provides the version number of the currently running kernel. By running this command, you will
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`uname -n`(command is used to print the network node hostname of the system.)

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The “uname -n” command is used to print the network node hostname of the system. When you run this command in a terminal or command prompt, it will output the
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`uname -s`(command is used to print the kernel name of the operating system.)

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The “uname -s” command is used to print the kernel name of the operating system. When you run this command in a terminal or command prompt, it will output the
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`uname -a` (command is used to print detailed system information, including the kernel name, network node hostname, kernel release, kernel version, machine hardware name, and operating system.)

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The “uname -a” command is used to print detailed system information, including the kernel name, network node hostname, kernel release, kernel version, machine hardware name, and operating system. When you
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`uname -m` command is used to print the machine hardware name or architecture

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The “uname -m” command is used to print the machine hardware name or architecture. When you run this command in a terminal or command prompt, it will output the hardware
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`arch` (used to print the computer architecture)

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The “arch” command is used to display the computer architecture information. When you run the “arch” command in a terminal or command prompt, it will output the architecture of the
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  • `init 0`(is used to initiate a system shutdown in Linux.)
  • `uname -r`(” is used to display the kernel release information in Linux.)
  • `apt-get install package_name`
  • `cat file1 | command (sed, grep, awk, grep, etc …)> result.txt`
  • cat file1 file2 .. | command > file1_out.txt
  • `badblocks -v /dev/hda1`(is used to scan for bad blocks on the device or partition “/dev/hda1” in Linux systems.)
  • `mkfs /dev/hda1`(is used to create a file system on the device or partition)
  • `mkswap /dev/hda3`
  • `dump -0aj -f /tmp/home0.bak home` (is used to create a backup of the “home” directory using the “dump” utility.)
  • `cdrecord -v gracetime = 2 dev = /dev/cdrom -eject blank = fast -force`
  • `ifconfig eth0`(command is used to display the configuration information of the network interface named eth0)
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