me making things: Linux install and setup related

Environment related:

environment:

$ printenv  print all environment variables
$ printenv SHELL  what shell you are using

'set' sets environment variables and few other things.
'env' prints environment variables or runs processes in modified environments.
Unlike 'set', 'env' only allows to set variables for the child process it starts - they do no stay in the current shell's environment.

$ env TERM=xterm mc  run the command 'mc' with TERM set to 'xterm'
                   but the value of $TERM in the current shell will not be affected
$ set TERM=xterm  will change the value of $TERM in the current shell

bashrc:

.bashrc gets executed on non-login shells (like after logging in, then opening a console)
.bash_profile (or .bash_login) gets executed on login shells (when logging in, with username/password)
/etc/bash.bashrc gets executed for all users

To add a folder to the path to be able to exec from anywhere (eg. the /home/user/software/bin folder), add

export PATH=$PATH:~user/software/bin

to the end of .bashrc

$ source ~/.bashrc  to reload bashrc

shell function example, add the foll. into a shell file, which can then be invoked with the function name

function gitsync() {
    git add --all
    git commit -m "update"
    git push origin
}

$ gitsync

Users and groups:

$ less /etc/group lists all groups in the system
$ less /etc/passwd shows all the users in the system
$ groupadd groupName add a new group
$ useradd -G groupName userName add new user to existing group
$ passwd userName set passwd for user
$ usermod -a -G groupName userName add existing user to existing group
$ id userName show id and groups for user

Packages:

$ alien file.rpm convert rpm to deb
$ alien --scripts file.rpm conver rpm to deb, including scripts
$ dpkg -i file.deb install deb file

Java install:

I had openJDK installed by default.

$ java -version
java version "1.7.0_09"
OpenJDK Runtime Environment (IcedTea7 2.3.4) (7u9-2.3.4-0ubuntu1.12.10.1)
OpenJDK Server VM (build 23.2-b09, mixed mode)

Wanted to use the SunJDK, from Oracle now. So downloaded the tar.gz for Java SE Development Kit 7u13 for Linux x86 http://download.oracle.com/otn-pub/java/jdk/7u13-b20/jdk-7u13-linux-i586.tar.gz. Extracted that to jdk1.7.0_13.

$ sudo mv jdk1.7.0_13/ /usr/lib/jvm/jdk1.7.0

$ sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0/bin/java" 1
$ sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0/bin/javac" 1
$ sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.7.0/bin/javaws" 1

$ sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                           Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java   1071      auto mode
  1            /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java   1071      manual mode
  2            /usr/lib/jvm/jdk1.7.0/bin/java                  1         manual mode

Press enter to keep the current choice[*], or type selection number: 2
update-alternatives: using /usr/lib/jvm/jdk1.7.0/bin/java to provide /usr/bin/java (java) in manual mode

Now check the java version

$ java -version
java version "1.7.0_13"
Java(TM) SE Runtime Environment (build 1.7.0_13-b20)
Java HotSpot(TM) Server VM (build 23.7-b01, mixed mode)

Displays related:

General

$ lspci | grep -i vga should show video card info

Seiki SE39UY04 monitor / GeForce GTX 650 video card

Got useful info from this post.
With this combination, Was only going upto 1440x900 by default. Needed to get the driver to acknowledge that this is a 4K monitor and should be able to run at 3840x2160.
Installed the nvidia driver, version 331.38. Then was able to fire up the nvidia x server settings utility. If not available, should be able to install and start up using

$ sudo apt-get intall nvidia-settings
$ gksudo nvidia-settings

Then, created /usr/share/X11/xorg.conf.d/10-monitor.conf, with the following content:

Section "Monitor"
  Identifier "Monitor0"
  Modeline "3840x2160" 165.00 3840 3888 3920 4000 2160 2163 2168 2222 +hsync +vsync
EndSection
Section "Screen"
  Identifier "Screen0"
  Device "HDMI-0"
  Option "ModeValidation" "AllowNon60hzmodesDFPModes, NoEDIDDFPMaxSizeCheck, NoVertRefreshCheck, NoHorizSyncCheck, NoDFPNativeResolutionCheck, NoMaxSizeCheck, NoMaxPClkCheck, AllowNonEdidModes, NoEdidMaxPClkCheck"
  Monitor "Monitor0"
  DefaultDepth 24
  SubSection "Display"
    Depth 24
    Modes "3840x2160" "1920x1080"
  EndSubSection
EndSection

On reboot, Linux (Mint 17 XFCE, actually) then picked up and started running at 3840x2160. Note that this is still 30Hz, and not 60Hz, that might just be a limitation of the firmware on the monitor?

Databases related:

Install sql developer

Downloaded Linux RPM sqldeveloper-4.0.2.15.21-1.noarch.rpm from http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html

$ sudo alien --scripts sqldeveloper-4.0.2.15.21-1.noarch.rpm rpm to deb
$ sudo dpkg --install sqldeveloper_4.0.2.15.21-2_all.deb  install deb
$ cd /opt/sqldeveloper/ to installed here
$ ./sqldeveloper.sh to run

It needed a newer version of the jdk, so pointed it by setting
SetJavaHome /opt/jdk1.7.0_55
in ~/.sqldeveloper/4.0.0/product.conf

VirtualBox related:

To install a vm from an install ISO image

create a new virtual machine.
Storage -> IDE Controller -> Live CD/DVD -> Choose a virtual optical disk file -> (browse to the iso)
start the vm, and perform the install.
shut down, remove the virtual optical disk.
to be able to see the new vm from the host and other machines on the network, select "Bridged Adapter" as a network adapter. This should set up the vm to request and get an IP for the local network.

bring up to date

$ sudo apt-get update
$ sudo apt-get upgrade

Use existing vmdk
Copy over the .vmdk file and the .vbox files. Start virtualbox using the .vbox file. run virtualBox from the command line

$ VBoxManage list vms
"Oracle 11gR2" {dbe091d1-2d58-432f-b23a-c4f9a6c47cb5}
$ VBoxManage list runningvms
$ VBoxManage startvm "Oracle 11gR2"
$ VBoxManage showinfo "Oracle 11gR2"

XFCE tricks and settings

$ amixer set Master 5%- command line volume control decrease
$ amixer set Master 5%+ command line volume control increase
$ xfce4-session-settings fire up session settings applet
Alt F8 start window resize (otherwise target only 1px wide in some themes)

Remote Access

RDP
On the server:

$ sudo apt-get install xrdp
$ sudo service xrdp start

On the client:

$ sudo apt-get install rdesktop
$ rdesktop ip.of.server.running.xrdp using module sesman-Xvnc seems to work ok

Wordpress on LAMP server:

See here for a nice walkthrough.

installed ubuntu 14.04 server 32bit on a VirtualBox
chose LAMP server, and openSSH in software options
to test LAMP install:

http://10.216.30.62 should show contents of /var/www/html/index.html

after the LAMP server install, set the required write permissions to the /var/www directory.

$ sudo usermod -a -G www-data  Add your user to the www-data group
$ sudo chgrp -R www-data /var/www add the /var/www folder to the www-data group
$ sudo chmod -R g+w /var/www give write permissions to the www-data group

to test php, create /var/www/html/t1.php

<?php
phpinfo();
?>

http://10.216.30.61/t1.php should show php config info

to configure a database for WordPress to use:

mysql -u root -p (enter passwd used during lamp install of mysql)

CREATE DATABASE wordpress;
 
GRANT ALL PRIVILEGES ON wordpress.* TO 'wordpress'@'localhost' IDENTIFIED BY 'wordpress'; create user 'wordpress' with passwd 'wordpress' for database 'wordpress'

exit

to install wordpress

$ sudo apt-get intall subversion
$ cd /var/www/html
$ svn co http://core.svn.wordpress.org/tags/3.9/ blog

http://10.216.30.62/blog test the download, and  walk through config screen to create config file, click "install"

http://10.216.30.62/blog/wp-login.php admin login page

Linux Mint (Ubuntu) install related:

to change the lock screen wallpaper that is shipped with Linux Mint replace:

/usr/share/backgrounds/linuxmint/default_background.jpg

to install vpn client:

Open Connect client
$ sudo apt-get install openconnect
$ sudo apt-get install network-manager-openconnect
Cisco VPN client
$ sudo apt-get install vpnc
$ sudo apt-get install network-manager-vpnc
$ sudo apt-get install network-manager-vpnc-gnome

(the network-manager integration makes the vpn clients show up as connection options in the networkManager tray  applet)

to add another drive:

$ sudo lshw -class disk (got info on the disks, to make sure not messing up the primary already installed disk)
 ran gparted to delete partitions and format the new disk. formatted to ext4
$ sudo blkid showed the uuid of the disks
 created a mount point at /mnt/data1, and added the following entry to /etc/fstab
 UUID=34c67677-ecd6-4bed-8f2a-a4a6ee54d425  /mnt/data1      ext4    defaults,errors=remount-ro 0       1
$ sudo mount -a to test. should now auto mount on startup had to chown the mount point from root to user, so user could use the new disk

to change browser for Thunderbird email links:
Edit -> Preferences -> Advanced -> Config Editor
Set to "true" the foll:

network.protocol-handler.warn-external.http
network.protocol-handler.warn-external.https

Now Thunderbird should ask for (and remember) the application to be used to launch http and https links. (eg.

/usr/bin/google-chrome-stable

)

Google Sketchup install

(see UbuntuHandbook blog)
(see this for tweaks to not disable the ruby api)

$ sudo add-apt-repository ppa:ubuntu-wine/ppa
$ sudo apt-get update
$ sudo apt-get install wine1.7
$ winecfg Application:WindowsVersion:Windows7, Libraries:Override:"riched20"

Downloaded Sketchup Make 2014, installed the exe through Wine Progrm Loader. If hangs on starting up, might be because of ruby, so add " /DisableRubyAPI" to end of shortcut.

Raid disk setup example:

wanted to do raid 0 install, (raid 0 just spreads across multiple disks, extra performance, no redundancy):
had 2 identical 300G hard drives (sda, sdb)

plan is to do the foll:
       sda partitions                            sdb partitions
       ---------------                           --------------
2G, primary, beginnning, boot              2G, primary, beginnning, unmounted
2G, primary, end, swap<-------raid 0------>2G, primary, end, swap
150G, primary, end, root<-----raid 0------>150G, primary, end, root
remaining, primary, home<-----raid 0------>remaining, primary, home

creating boot drive:need to make boot drive, this cannot be raid (grub can't use raid?)
  sda -> free space -> create new partition -> Primary (try to keep at location beginning)
  use as -> ext4 journalling file system
  mount point -> boot -> done setting up partition
creating matching non-raid partition on sdb (may not be necessary to do this, just doing it for symmetry)
  sda -> free space -> create new partition -> Primary -> location beginning
  use as -> ext4 journalling file system
  mount point -> do not mount -> done setting up partition

creating swap raid:
  sda -> free space -> create new partition -> Primary -> location end
  use as ->  physical volume for raid -> done setting up the partition
  [repeat for sdb]
  configure software raid -> write changes
  multi disk configuration -> create md device -> raid type raid 0
  active devices -> (choose the 2 partitions created)
  multidisk configuration actions -> finish  
  should now show RAID0 device. choose the #1 just under that, (and will be making that the swap partition)
  use as -> swap area
  done setting up partition

creating root raid:
  same as swap raid, except, at the end,
  use as -> ext4 journalling file system
  mount point -> root file system -> done setting up partition

creating home raid:
  same as root raid, except, at the end,
  use as -> ext4 journalling file system
  mount point -> home -> done setting up partition

finish partitioning and write changes to disk
write changes to disk

(install process should now start)

after installing, in ubuntu, System -> Administration -> System Monitor -> File System
should show root and boot raid devices (swap won't be visible)

Linux install and setup related

Environment related:

print all environment variables

what shell you are using

run the command 'mc' with TERM set to 'xterm' but the value of $TERM in the current shell will not be affected

will change the value of $TERM in the current shell

to reload bashrc

Users and groups:

lists all groups in the system

shows all the users in the system

add a new group

add new user to existing group

set passwd for user

add existing user to existing group

show id and groups for user

Packages:

convert rpm to deb

conver rpm to deb, including scripts

install deb file

Java install:

Displays related:

should show video card info

Databases related:

rpm to deb

install deb

to installed here

to run

VirtualBox related:

XFCE tricks and settings

command line volume control decrease

command line volume control increase

fire up session settings applet

start window resize (otherwise target only 1px wide in some themes)

Remote Access

using module sesman-Xvnc seems to work ok

Wordpress on LAMP server:

should show contents of /var/www/html/index.html

Add your user to the www-data group

add the /var/www folder to the www-data group

give write permissions to the www-data group

should show php config info

(enter passwd used during lamp install of mysql)

create user 'wordpress' with passwd 'wordpress' for database 'wordpress'

test the download, and walk through config screen to create config file, click "install"

admin login page

Linux Mint (Ubuntu) install related:

Open Connect client

Cisco VPN client

(the network-manager integration makes the vpn clients show up as connection options in the networkManager tray applet)

(got info on the disks, to make sure not messing up the primary already installed disk)

ran gparted to delete partitions and format the new disk. formatted to ext4

created a mount point at /mnt/data1, and added the following entry to /etc/fstab

to test. should now auto mount on startup had to chown the mount point from root to user, so user could use the new disk

/usr/bin/google-chrome-stable

Google Sketchup install

Application:WindowsVersion:Windows7, Libraries:Override:"riched20"