On Linux based virtual machines, edit the /etc/X11/xorg.conf file and disable HWCursor in the Device section as follows: Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" Option "HWCursor" "off" EndSection

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You can add the color to the HTML element as follows: <i class="fa fa-car" style="color:#DDDDDD;"><!-- icon --></i> You can also change the size of the icon as follows: <i class="fa fa-car fa-lg" style="color:#DDDDDD;"><!-- icon --></i> <i class="fa fa-car fa-4x" style="color:#DDDDDD;"><!-- icon --></i> You can also make site-wide changes with CSS as follows: .fa {color: black;}.fa-car …

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You can use two methods to disable saving shell history in bash. Method 1: Add the following line at the end of /etc/profile or make a new file in /etc/profile.d/ with .sh extension. unset HISTFILE With the above option, the user’s bash shell will not save history unless manually configures the HISTFILE variable. Method 2: …

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http_Proxy environment variable is used to specify proxy settings to wget and curl. To find the proxy server already set on a Linux machine, use the following command: echo $http_proxy To set http_proxy without username and password: export http_proxy=http://SERVER-NAME:PORT/ To set http_proxy with username and password: export http_proxy=http://USER-NAME:PASSWORD@SERVER-NAME:PORT/ To set http_proxy with username, password, and …

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shopt is a built-in bash variable that enables bash history to be written to /var/log/messages. shopt -s syslog_history If you want to unset it, run the following command. shopt -u syslog_history In order for these audit activities to persist in all bash sessions, append the following to the bottom of /etc/bashrc file. shopt -s syslog_history

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You should first create CA keys on the certificate authority ca server as root: ssh-keygen -f ca_server Check with ls to see if files are created in the current working directory. Following files will be present. ca_server ca_server.pub Sign the host key of the ca server itself. ssh-keygen -s ca_server -I host_auth_server -h -n ca_server.seimaxim.com …

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Bash is by default installed on most Linux distributions like AlmaLinux, CentOS, Kali, and Ubuntu. The following cheat sheet outlines some important features of bash scripting. Bash Script Header #!/usr/bin/env bashecho “Hello World” Variables #!/usr/bin/env bashMSG=”Hello World”echo “$MSG Albert” # Hello World Albertecho ‘$MSG Albert # $MSG Albert Strings MSG=”hello world” Replace echo ${MSG/w/W} # …

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This guide deals with how to set up sftp so that users are restricted to their home directory, while other users on the server are not affected. To allow chroot only for specific users, use the Match keyword in /etc/ssh/sshd_config file. Comment the original Subsystem entry in sshd_config file as follows: #Subsystem sftp /usr/libexec/openssh/sftp-server Add …

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First, update Kali Linux based server as follows: sudo apt updatesudo apt -y full-upgrade Reboot server as follows: reboot Find out which video card is installed in the Kali Linux server and verify using the nouveau open-source driver. lspci | grep -i vga You will get the following output: 00:02.0 VGA compatible controller: NVIDIA Corporation …

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Some of the common tools like cp/rsync do not support copying of inode attributes, so it is not possible to copy these attributes across or even on the same filesystems. These are inode flags (attributes) and not the regular attributes. Some Linux filesystems support inode flags, attributes that modify the semantics of files and directories. …

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Getting the following ssh debug output: debug2: mac_setup: found hmac-sha1debug1: kex: server->client aes128-ctr hmac-sha1 nonedebug2: mac_setup: found hmac-sha1debug1: kex: client->server aes128-ctr hmac-sha1 noneno hostkey alg On CentOS 6, you generate ECDSA hostkeys with correct permissions: ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -C '' -N ''chmod 600 /etc/ssh/ssh_host_ecdsa_keychmod 640 /etc/ssh/ssh_host_ecdsa_key.pubrestorecon /etc/ssh/ssh_host_ecdsa_key.pub To allow ssh clients to accept …

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The new configuration file for NFS server setup in AlmaLinux 8 is /etc/nfs.conf. /etc/sysconfig/nfs is deprecated and replaced by /etc/nfs.conf. # cat /etc/nfs.conf## This is a general configuration for the# NFS daemons and tools#[general]# pipefs-directory=/var/lib/nfs/rpc_pipefs#[exportfs]# debug=0#[gssd]# use-memcache=0# use-machine-creds=1use-gss-proxy = yes# avoid-dns=1# limit-to-legacy-enctypes=0# context-timeout=0# rpc-timeout=5# keytab-file=/etc/krb5.keytab# cred-cache-directory=# preferred-realm=#[lockd]# port=0# udp-port=0#[mountd]# debug=0# manage_gids=n# descriptors=0# port=0# threads=1# reverse-lookup=n# …

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Method 1: Create pub/private keys on Windows Clients and copy the public key to Linux Server On a Windows machine, open Putty Key Generator. Click Generate to create public and private keys (set passphrase if preferred). Copy the content of the public key, and paste it to the ~/.ssh/authorized_keys file on AlmaLinux/CentOS ssh server. Confirm …

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When different Java versions are installed on a Linux server, use the alternatives tool to set the default Java version as follows: alternatives --config java There are 2 program that provides 'java'. Selection Command ----------------------------------------------- *+ 1 java-1.9.0-openjdk.x86_64 (/usr/lib/jvm/java-1.9.0-openjdk-1.9.0.292.b10-1.el8_4.x86_64/jre/bin/java) 2 java-12-openjdk.x86_64 (/usr/lib/jvm/java-12-openjdk-11.0.11.0.9-2.el8_4.x86_64/bin/java) Enter to keep the current selection[+], or type selection number: 2 Type 1 …

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