Tag: linux

.deb files: Installing Debian packages on your server

02/28/2016 Aaron Belchamber No Comments

Many awesome software packages like Odoo come with free downloadable editions, it’s much easier to install software and packages via the command line, but sometimes you might need to download the package so you have an image ready to deploy quickly.  Whatever your reason, if you have a .deb file, that’s the package for Debian and Ubuntu Linux servers, this is usually how you install the .deb files:

dpkg -i packageNameHere.deb
dpkg --install packageNameHere.deb
dpkg -i -R /path/to/dir/name/dotDebFiles/
dpkg -i --recursive /path/to/dir/name/dotDebFiles/
  1. -i or --install : Install the package.
  2. -R or --recursive : Recursively install all *.deb files found in specified folders and all of its sub-folders. /path/to/dir/name/dotDebFiles/ must refer to a folder instead of packageNameHere.deb file name.

Solving “Network Error: Connection Refused” errors when trying to Putty into LAMP stack

06/22/2015 Aaron Belchamber No Comments

Trying to putty into your server, you may get a “Connection Refused” error.  That’s usually because the Open SSH server and client aren’t installed, just run this at the command line and restart Apache.

sudo apt-get install openssh-server openssh-client

Linux command line “stat” command used to show file or system status

01/20/2015 Aaron Belchamber No Comments

From the command line in Linux, “stat” is a useful command.  Good luck committing it’s 30+ options to memory….  Here’s the help output for easy reference to study if you’re so inclined. I probably use %U and %G the most when I run into file permission issues and realized I cleared the Symfony cache accidentally under the “root” user because I was in the CLI running Composer updates or installing other server-level scripts.

[~/public_html/app]# stat --help

Usage: stat [OPTION]… FILE…

Display file or file system status.

-L, –dereference follow links
-Z, –context print the SELinux security context
-f, –file-system display file system status instead of file status
-c –format=FORMAT use the specified FORMAT instead of the default;
output a newline after each use of FORMAT
–printf=FORMAT like –format, but interpret backslash escapes,
and do not output a mandatory trailing newline.
If you want a newline, include \n in FORMAT.
-t, –terse print the information in terse form

–help display this help and exit

–version output version information and exit

The valid format sequences for files (without –file-system):

%a Access rights in octal
%A Access rights in human readable form
%b Number of blocks allocated (see %B)
%B The size in bytes of each block reported by %b
%C SELinux security context string
%d Device number in decimal
%D Device number in hex
%f Raw mode in hex
%F File type
%g Group ID of owner
%G Group name of owner
%h Number of hard links
%i Inode number
%n File name
%N Quoted file name with dereference if symbolic link
%o I/O block size
%s Total size, in bytes
%t Major device type in hex
%T Minor device type in hex
%u User ID of owner
%U User name of owner
%x Time of last access
%X Time of last access as seconds since Epoch
%y Time of last modification
%Y Time of last modification as seconds since Epoch
%z Time of last change
%Z Time of last change as seconds since Epoch

Valid format sequences for file systems:

%a Free blocks available to non-superuser
%b Total data blocks in file system
%c Total file nodes in file system
%d Free file nodes in file system
%f Free blocks in file system
%C SELinux security context string
%i File System ID in hex
%l Maximum length of filenames
%n File name
%s Block size (for faster transfers)
%S Fundamental block size (for block counts)
%t Type in hex
%T Type in human readable form


Linux command line to delete all files and folders in current directory

01/02/2015 Aaron Belchamber No Comments

In Linux, “cd” your way to the directory you want to completely clean out, then type:

$  rm –rf *

I suggest going into the directory first, then “ls” to list the contents so you can see what you’re deleting before using this command, though! Just a reminder, the prompt symbol is the “$” you don’t type that, on PCs or Macs it’s sometimes a % symbol instead.