Follow The Geek Diary, filter it, and define how you want to receive the news (via Email, RSS, Telegram, WhatsApp etc.) https://follow.it/the-geek-diary Sun, 26 Sep 2021 20:13:22 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5xZSm8DKq9rem6srrLMsqK The env command is used to run a command with modified environment variables. By supplying the name of a variable and a value in the key-value pair format, as well as supplying a command to run, you can change the value of the specified variable for that particular command session. If the variable does not […]]]> Sun, 26 Sep 2021 15:50:01 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5xZSm8DKq9rem6srrLMsqK https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7GNNNpUaOZ7q7VFky8BpXO GNU zip (gzip) is a compression utility that reduces the size of selected files. Files compressed with gzip frequently have the .gz file extension. The gzip command has several options. These command options are described in the following table. Option Used To -d Reverse file compression (decompression). -f Force compression or decompression of a file […]]]> Sun, 26 Sep 2021 13:29:23 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7GNNNpUaOZ7q7VFky8BpXO https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5DD3xQDqaUIJONpYks2fGs The dd command copies and converts files to enable them to be transferred from one type of media to another. The dd command has various operands, or actions, to perform. Operand Used To if={file name} Specify the file from which data will be read. of={file name} Specify the file to which data will be written. […]]]> Sun, 26 Sep 2021 12:35:36 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5DD3xQDqaUIJONpYks2fGs https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7YGjQsfaCwboMOI2eu70Rg The syslogd service is the original syslog service on Linux. The rsyslogd service makes several improvements, including support for: TCP instead of UDP as the transport protocol, increasing the reliability of transmitted data. Data encryption using SSL/TLS. Outputting data to various database technologies like MySQL. Buffering data on local systems when the remote receiver is […]]]> Sun, 26 Sep 2021 08:54:38 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7YGjQsfaCwboMOI2eu70Rg https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6vDlmYtlfAx6JCIqJppjfU Linux often uses two particular utilities to help manage files. The first utility is tape archiver or tar. The second is a compression utility such as gzip. The purpose of tar is to bundle together multiple files into a single tarball with a .tar extension. This makes functions like downloads much easier since there is […]]]> Sun, 26 Sep 2021 08:35:24 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6vDlmYtlfAx6JCIqJppjfU https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6vDlmYtlfAx96jHbRcHw3s The yum command improves the functionality of rpm while still using .rpm packages and maintaining an RPM database. It provides a more straightforward method for managing packages. One of the biggest benefits of YUM is the ability to automatically handle software dependencies. This means that administrators can tell YUM to install a particular package, along […]]]> Sun, 26 Sep 2021 08:22:35 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6vDlmYtlfAx96jHbRcHw3s https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7OnAtkYfEd4AO5yOwvVe_2 It is possible to configure a Linux system to act as a router. The role of a router is to pass traffic from one network segment to another, based on the network ID of packets. In order to properly direct traffic to the appropriate subnet (and prevent traffic from getting to certain subnets, too), routing […]]]> Fri, 24 Sep 2021 16:00:57 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7OnAtkYfEd4AO5yOwvVe_2 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7pPC-BMfBV9IMOI2eu70Rg The netstat (network statistics) command is used to gather information about TCP connections to the system. Depending on the options used, netstat informs the user of existing connections, listening ports on the server, NIC information, etc. Common options for the netstat command include: Option Used To -v Activate verbose mode. -i [interface] Display info about […]]]> Fri, 24 Sep 2021 15:38:04 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7pPC-BMfBV9IMOI2eu70Rg https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6LYgHK9wuWFJ8v71dCn6bG One of the earliest parts of network troubleshooting is sending test packets between two systems. This is done using a TCP/IP utility called ping. The ping command will generate a response request from the sending computer and should receive a reply from the destination computer. Possible outcomes of the ping command include: Reply from [host]: […]]]> Fri, 24 Sep 2021 12:57:29 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6LYgHK9wuWFJ8v71dCn6bG https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6LYgHK9wuWFCxhxzpi7FpJ The ifconfig command enables a user to view the current IP addressing information for each NIC recognized by the system. Viewing the IP address configuration is one of the earliest steps in network troubleshooting. The ifconfig command shows the IP address, subnet mask, broadcast ID, MAC address, basic performance information, and NIC name. The tool […]]]> Fri, 24 Sep 2021 12:29:40 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6LYgHK9wuWFCxhxzpi7FpJ https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4xt17MBAyRarG7Iy_4u0x9 The dmidecode command dumps the system’s Desktop Management Interface (DMI) table and presents it in a human-readable format. The DMI table is an industry-standard for tracking information about hardware components. It separates components into types, with each type given a number—for example, type 4 is a processor, type 39 is a power supply, etc. Like […]]]> Fri, 24 Sep 2021 12:20:34 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4xt17MBAyRarG7Iy_4u0x9 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6SVdmzdx4-XxKeetMRuZbW The lspci command is used to display information about devices that are connected to the system’s PCI buses. By default, the output will list the logical slot address (typically in the format Bus:Device.Function), the device’s class (such as network controller, storage controller, input device, or bridge device), the vendor name, and the device name. Like […]]]> Fri, 24 Sep 2021 08:12:41 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6SVdmzdx4-XxKeetMRuZbW https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5cFwf7yDRbG2nhpmeYcemU The lsusb command is used to display information about devices that are connected to the system’s USB buses. This command scans the /dev/bus/usb/ directory for information. By default, the command will print the number of the bus and the connected device, the ID of the device, and the name of the vendor and product matching […]]]> Fri, 24 Sep 2021 08:04:27 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5cFwf7yDRbG2nhpmeYcemU https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5cFwf7yDRbG8fGo0LrnZNO The swapon command is used to activate a swap partition in a specified device. The swapoff command is used to deactivate the swap space on a device. Some of the frequently used swapon and swapoff command options are given in the following table. Option Used To swapon -e Skip non-existent devices. swapon -a Activate all […]]]> Fri, 24 Sep 2021 07:55:22 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX5cFwf7yDRbG8fGo0LrnZNO https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4kU1mNH9ACWUZPHFZJLI3I The mkswap command is used to create swap space on a storage partition. It is typically used when you wish to move swap space to a different partition than the one that was created during system installation. For example, you might want to save space on a low-capacity boot drive. It provides options to perform […]]]> Fri, 24 Sep 2021 07:44:42 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4kU1mNH9ACWUZPHFZJLI3I https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX434XKZQsWRxarkJyTkC_2b The free command parses the /proc/meminfo file for easier analysis of memory usage statistics. Its default behavior is to display the following information about system memory and swap space: The total memory. The total used. The total free. The total shared. The total buffered and cached. The total available for starting new apps (estimated). Syntax […]]]> Fri, 24 Sep 2021 06:26:44 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX434XKZQsWRxarkJyTkC_2b https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7BQDMr9RI-SlyOSYGFl6uu The sar command displays system usage reports based on data collected from system activity. These reports consist of various sections, each of which consists of the type of data and the time at which the data was collected. The default mode of the sar command displays CPU usage in various time increments for each category […]]]> Fri, 24 Sep 2021 06:13:38 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX7BQDMr9RI-SlyOSYGFl6uu https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6-ky_NnMo5-wC0qH-r7xlT Different commands are used to send signals to processes to terminate or “kill” them. This is necessary when a process becomes unresponsive (hangs), causes system instability, or fails to relinquish control over a file you’re trying to modify. Using the pid number to terminate processes You can use the kill command with the process table […]]]> Fri, 24 Sep 2021 05:29:55 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX6-ky_NnMo5-wC0qH-r7xlT https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4Iy7L2P1iAEum6srrLMsqK The lsof command prints a list of all files that are currently opened to all active processes. This can include everything from a text file to a device file—any object that the system can parse as a file. You may be prevented from modifying a file if it is opened in another process. By using […]]]> Fri, 24 Sep 2021 05:06:44 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4Iy7L2P1iAEum6srrLMsqK https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4Iy7L2P1iAEuGkz6RCC25z Like ps, the top command lists all processes running on a Linux system. It acts as a process management tool by enabling you to prioritize, sort, or terminate processes interactively. It displays a dynamic process status, reflecting real-time changes. Syntax The syntax of the top command is: # top [options] Listing the state of running […]]]> Fri, 24 Sep 2021 04:56:21 +0200 https://api.follow.it/track-rss-story-click/v3/d7NmEXQ7LX4Iy7L2P1iAEuGkz6RCC25z