W: TMPDIR is Mounted noexec, Will Not Cache Run Scripts Error and Solution

I mount /tmp with nodev, nosuid, and noexec options to increase the security of my Linux based web server. And, whenever I ran apt-get install or apt-get upgrade command, I am getting the following error:…

CentOS: rpmdb: PANIC: fatal region error detected; run recovery error and solution

I am using a CentOS Linux v6.5 on my home server and I am getting the following error when I execute yum command: rpmdb: PANIC: fatal region error detected; run recovery error: db3 error(-30974) from…

X11 forwarding request failed on channel 0 Error and Solution

I am a new Linux server user. I need to tunnel X over ssh. I type the following command from OS X Unix terminal to login into far_away_machine (a centos server): ssh -X -o options…

Fix: /bin/dbus-launch terminated abnormally without any error message and solution

I am a new Linux server user. I need to tunnel X over ssh. I type the following command on a CentOS/RHEL based remote host to get display on a local desktop: ssh -X user@server1.cyberciti.biz…

Linux / Unix – crontab: no crontab for user using an empty one error and solution

I am trying to set cronjob on a Unix systems by running the crontab -e command. But, I’m getting the following error: crontab: no crontab for veryv – using an empty one crontab: “/usr/bin/vi” exited…

FreeBSD: (EE) Failed to load module “fbdev” (module does not exist, 0) Error and Solution

I ‘m installing FreeBSD 10 Xorg and xfce4 desktop. But, getting the following error: (EE) Failed to load module “fbdev” (module does not exist, 0) How do I fix this problem on FreeBSD 10 amd64…

Apple OS X: Install X Window System XQuartz For SSH X11 Forwarding On a Mavericks or Yosemite

I need to tunnel X Window securely over SSH bases session so that I run X program on my remote Linux/Unix server/workstation and get back display to my Apple Macbook pro laptop. I tried the…

Use ssh-copy-id with an OpenSSH Server Listening On a Different Port

M y OpenSSH server listening on TCP port number 2222. How can I use ssh-copy-id with an sshd server with listening on a different port on a Linux or Unix-like systems?   The ssh-copy-id is…

FreeBSD Unix Find Out Which Programs Are Listening On a Given Port Number

I ‘m a new FreeBSD Unix system user. How can I find out the process/programs names listing on a certain port on a FreeBSD Unix systems using command line? How do I lookup the process…

How to find out information about a LXC (Linux container) CPU & Memory Usage

H ow can I find out information about a Linux container (LXC) such as CPU usage and memory usage from the command prompt? Is there is top command like a tool for lxc to monitor…