Linux

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To delete a file in Linux, use the rm command followed by the filename. It permanently deletes files without sending them to a recycle bin.

To unzip a .gz file without removing the gzipped file, use the gunzip with the c option. To unzip a .gz file in Linux, use the gzip utility with the d option.

To fix the “ls command not found” error, check the spelling and case letter of the command, add an environment PATH variable, and check file permission.

The & ampersand operator and && AND operator in Linux commands are used to run processes in the background or in a conditional way.

To use the ChatGPT on the Linux terminal, install the “terminalgpt” using the Pip Python package manager. Then login to it with the generated ChatGPT API secret key.

To update/upgrade the packages using the pip, open the terminal and run the command “$ pip install –upgrade [package name]”.

To install the FLAX on Linux, install the pip package in the Linux distribution. Then use the pip command and run “pip install flax”.

To find all the files containing the specific text or string on Linux, use the grep command with its “rnwe” options. Also, the ack and rg commands can be used.

To delete the exported environment variable in the Linux shell, use the unset command. To use it, open the terminal and run “unset [variable name]”.

To fix the error “ModuleNotFoundError: No module named ‘langchain’”, ensure the Python library has been installed with the “pip install langchain” command.

To keep the Microsoft Teams status active and green on Linux, set the status of the “Microsoft Teams” to available as explained in this blog.

To ping Google from Windows and Linux, open the Command Prompt or terminal respectively. Run the command “ping Google.com” and the information will be displayed

To change the color of the “echo” command’s output, users can use the ANSI Escape Code. These codes are used to change both the text and background color.

o install the Streamlit on Linux, 3 different methods can be used. First is by using the pip, second is with the conda, and the last is by using the source.

To restart the Network Interfaces and Network Adapters on Linux distributions, the users can use the systemctl command.

To install PyTorch on Linux, two different methods including anaconda, and the pip packages are used and these methods are explained in this blog.

To search for Debian’s packages, use any of the commands from apt, apt-file, apt-cache, aptitude, dpkg, dlocate, and snap.

The cron script does not execute as expected is fixed by starting cron daemon, providing valid path to the script, giving execute permissions and fixing script.

All the messages in Linux (kernel and system) are passed through the rsyslog.conf file. The file has Global Directives, Modules, Rules, Selectors, and Actions.

The wildcard asterisk (*) is used to list all the files for the scp command. Using the asterisk, users can copy multiple files and the whole directory.

Linux offers the “Smartctl”, and “nvme-cli” command line tools and “Disks” application in GUI to test the health of SSD/HDD.

To force ssh clients to use only password authentication, users must change PublicKeyAuthentication yes to “no,” and add PasswordAuthentication yes.

The CIFS share is mounted when the mount command is used with the cifs-utility. To automatically mount, credentials are added in the/etc/fstab file.

In Linux, the “ALL ALL=(ALL) ALL” grants full sudo privileges to all users on all hosts for all commands in the sudoers file.

To start/stop or enable/disable the firewalld services, execute the “sudo systemctl firewalld.service” command in Linux.

Users can monitor log files in real-time and keep tailing them even when the latest date of one changes by following the “tail [options] [log_file]” syntax.

The “cmake: command not found” error is fixed by installing the “Cmake” package or adding the Cmake binary to your PATH environment variable.

The “Nslookup: command not found” error occurs when the nslookup command is not installed. To install it, run the “yum install bind-utils” command.

10 commands that can be destructive to Linux OS are explained in this blog, and users should avoid running these commands.

To find out which files differ by content in the given two directory trees, the diff command is used, and if you want a GUI-based tool, use the meld tool.

The tab completion error: bash: cannot create temp file is fixed by freeing up the Inodes in /tmp directory by removing the unnecessary files and directories.

The libstdc++.so.6 is a shared library to simplify the development of C++ applications and the GLIBCXX_3.4.20 is a version symbol used in it.

In Linux, the “su -” is utilized to switch to a user account with a login shell session, and the “su root” switches to the root user account without a login shell.

SFT, SCP, and FISH protocols are used to transfer files securely over the internet, and the differences have been discussed in the article

The dd and tar commands back up the entire Linux system. For GUI, the GNOME Disk Utility provides this facility. The data is then recovered.

To chmod 777 or grant all permissions to all users to all the subdirectories of /var/www, the -R flag of the chmod command is used.

The curl command’s output could be long sometimes, so the output is hidden to avoid cluttering the terminal. However, errors can be displayed.

Yes, there are a few alternatives to MovaXTerm for Linux, such as Terminator, Konsole, Tili, and
Remmina. Each of them has its features, pros, and cons.

Personal Package Archives or PPAs are used to distribute software to users not available in the official repositories without waiting for official approval.

When the kill command is used without a specific signal, then by default, a soft shutdown warning called SIGTERM is sent to the program. It can be ignored.

In iptables, chains provide a flexible and powerful way to manage network traffic. Users can create custom chains and define specific sets of rules in them.

To uninstall a .deb installed package with dpkg, use the “sudo apt -remove ” and “sudo dpkg -remove ” commands in Linux.

The .ts is the “Transparent Stream” acronym and is a type of video format. This is used to store videos on DVDs and stream them over the internet.

The Reverse DNS Lookup finds the hostname associated with the specified IP address. It can be found in Linux by dig, host, and nslookup commands.

To sync the time with the NTP server in Linux, use the “ntp”, or “chrony” commands. It synchronizes the computer with the NTP server.

The “lrwxrwxrwx” permission specifies that the symbolic link to another file has read, write, and execution permissions to all its users and groups.

In Linux, use the WPA_Supplicant to connect with the Wi-Fi networks. Also, establish connections with hidden, insecure networks and WEP routers.

To install, remove, and upgrade packages on CentOS, utilize the “yum” package manager by specifying the package name in the terminal.

By default, NTPD uses UDP port 123 for NTP servers and 1023 port for NTP clients. These ports need to open to allow incoming NTP traffic.

The “sudo rm -rf /*” command recursively deletes all files and directories from the root directory. It deletes all the files on the computer permanently.

The error is caused when the user tries to change the hostname, which is not found in the /etc/hosts file, and it is fixed by adding the hostname to that file.

In Linux, the error “cp: omitting directory” represents that the “cp” command expects a file as the source, not a directory.

The find -mtime +1 only returns files older than two days because it only returns the files modified in the last two or less than two days.

To export a GPG private and public key, use the “gpg –export-secret-key -a > private.key” and “gpg –export -a > public.key” commands.

To add a DNS server via resolv.conf configuration file, add a nameserver directive followed by the IP address of the DNS server.

To step into, step over, and step out with GDB, use the “step”, “next”, and “finish” commands. These GDB commands quickly identify and fix bugs in the program.

To install and run the TFTP server, execute the “sudo apt install tftpd-hpa” command and configure the “tftpd-hpa” configuration file.

To give full permission to a folder and its subfolders, use the “chmod 777 ” command and hit the “Properties” option by specifying the folder.

To force a clock update using the NTP server, use the “ntpdate” command and “ntpd” service. They synchronize the time on the system with the time NTP server.

To find out which users are in a group within Linux, utilize the “groups”, “getent”, and “id -Gn” commands and the “/etc/group” file.

To reverse SSH tunneling connection, execute the “ssh -R :localhost: @” command.

The difference between cp -r and cp -a is that cp -a preserves all file attributes, while cp -r only preserves the ownership and permissions of the files.

To run the SSH server on a port other than 22 is possible by changing the port number in the “sshd_config” configuration file

To get the file created/creation time in Linux, use the “stat”, “debugfs”, “ls” commands, and “Properties” options in GUI.

Sharing large videos takes a lot of time, so FFmpeg is used to manipulate videos, change resolutions, and trim so that the size is reduced.

To create a “.pem” file using the SCP, use the “ssh-keygen -f ~/.ssh/id_rsa -e -m pem” command. Then, upload or download a file or directory using SCP.