sqlplus /nolog conn / as sysdba select status from v$instance; startup nomount alter database mount; alter database clear unarchived logfile group 1; alter database clear unarchived logfile group 2; alter database clear unarchived logfile group 3; alter database clear unarchived logfile group 4; shutdown immediate; startup; select status from v$instance;
Remove watermark Windows 10
In CMD as Administrator
bcdedit -set TESTSIGNING OFF
ROracle in RStudio Server Ubuntu 18.04
Install Oracle Insta Client
https://download.oracle.com/otn_software/linux/instantclient/19800/instantclient-basic-linux.x64-19.8.0.0.0dbru.zip
https://download.oracle.com/otn_software/linux/instantclient/19800/instantclient-sdk-linux.x64-19.8.0.0.0dbru.zip
Create directory
mkdir /opt/oracle
Install AIO
Unzip the contents of both files
sudo apt install libaio1
Execu script
sudo sh -c "echo /opt/oracle/instantclient_19_3 > \
/etc/ld.so.conf.d/oracle-instantclient.conf"
sudo ldconfig
Build ROracle
Sys.setenv(
'ORACLE_HOME' = '/opt/oracle/instantclient_19_8',
'OCI_LIB64' = '/opt/oracle/instantclient_19_8'
)
install.packages("ROracle", type="source")
library("ROracle")
Test your script
library(ROracle)
drv <- dbDriver("Oracle")
host <- "localhost"
port <- 1521
service <- "ids"
drv <- dbDriver("Oracle")
connect.string <- paste(
"(DESCRIPTION=",
"(ADDRESS=(PROTOCOL=tcp)(HOST=", host, ")(PORT=", port, "))",
"(CONNECT_DATA=(SERVICE_NAME=", service, ")))", sep = "")
con <- dbConnect(drv, username = "user", password = "pass", dbname = connect.string)
table_results <- dbGetQuery(con,"select * from table")
Remove old Kernels Ubuntu 18.04
Copy the text, this is one line.
echo $(dpkg --list | grep linux-image | awk '{ print $2 }' | sort -V | sed -n '/'`uname -r`'/q;p') $(dpkg --list | grep linux-headers | awk '{ print $2 }' | sort -V | sed -n '/'"$(uname -r | sed "s/\([0-9.-]*\)-\([^0-9]\+\)/\1/")"'/q;p') | xargs sudo apt-get -y purge
OpenVPN NAT on client to access LAN
Enable IP Forwarding
Then run
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE /sbin/iptables -A FORWARD -i eth0 -o tun0 -m state --state RELATED,ESTABLISHED -j ACCEPT /sbin/iptables -A FORWARD -i tun0 -o eth0 -j ACCEPT
Chromium OS installation step by step
I have been struggling for two day to make the files app work, here is the solution I found, step by step so new users are able to execute it.
Download a fresh image from http://arnoldthebat.co.uk/wordpress/chromium-os/
I tried October 13 daily build 64 bits.
Load the image into an USB as explained in the page.
Boot chromium from USB and configure the firts run.
Once you are logged in go to the next page.
http://www.chromium.org/developers/how-tos/api-keys
Follow the instructions to generate your keys.
Then go to the developer console apis list and make sure you have the following apis enabled.
Drive API
Drive SDK.
Google Maps Geolocation API.
Google Now For Chrome API.
Open a new Crosh screen Ctrl + Alt + T in chromium browser.
Type: shell.
Type : sudo su.
And enter the password usually “password” without quotes.
Mount your system as read write.
Type: mount -o remount,rw /
Type: cd /etc
Type: vi chrome_dev.conf
Go to the first line and insert your keys (fake ones used):
GOOGLE_API_KEY=AAA
GOOGLE_DEFAULT_CLIENT_ID=BBB
GOOGLE_DEFAULT_CLIENT_SECRET=CCC.
Be careful as VI is very tricky to use, once the data is correct save the file, using ESC wq and enter, if you have issues saving find in google on how to use VI.
Once the file is saved go to the bottom right of the screen and click on your user picture and sign out, once the system ui restart login, it will say that you need to login again in order to update your credentials, once you login again, the system will be able to use the files APP.
After this I usually load the plugins like flash and other unsupported files.
What worked for me is following the instructions in.
https://github.com/sixsixfive/chromiumos.
The script asks for Keys, but I already saved them in the file, So maybe we can save some of the steps discussed above using the functionality in the script, If someone can try that it will be great as we will avoid the use of the shell.
Please share your experience with the instructions I have provided, Im happy to be able to share something with the community.
Migrating to Lucid Lynx (10.04 LTS) – coLinux
Once the upgrade is completed, add the following to /etc/fstab (before rebooting):
dev /dev devtmpfs rw 0 0Sometimes you have to replace devtmpfs with just tmpfs in the line above.
There may be plymouth warnings on the console at the next reboot. Disable those by running:
cd /etc/init for i in plymouth*; do mv $i $i.disabled; doneCreate an upstart script for uTorrent
To create an upstart script for uTorrent, move all the uTorrent files to the /home/yourusername/.utorrent folder, then run the following command:
$sudo nano /etc/init/utorrent.conf
description “utorrent startup script”
start on (local-filesystems and started dbus and stopped udevtrigger)
stop on runlevel [016]
script
cd /home/yourusername/.utorrent
exec su yourusername -c “/home/yourusername/.utorrent/utserver”
end script
$sudo ln -s /lib/init/upstart-job /etc/init.d/utorrent
WPA Ubuntu 10.04
Install wpa supplicant package:
$ sudo apt-get install wpasupplicant
Configure network ESSID and passphrase.
In this example I use ESSID ‘yantoknuk-singtel’ and passphrase ‘ngumbahkucing’.
$ wpa_passphrase yantoknuk-singtel
# reading passphrase from stdin
After that, type in your passphrase right below the text ‘# reading passphrase from stdin’.
# reading passphrase from stdin
ngumbahkucing
network={
ssid=”yantoknuk-singtel”
#psk=”ngumbahkucing”
psk=1e6eb493adf24740e2d3e98759b8b985e69f0bb939931c19400ceeecb61788e1
}
Edit or create /etc/wpa_supplicant.conf:
$ sudo nano /etc/wpa_supplicant.conf
And then type in the following lines which is produced by wpa_passphrase before:
network={
ssid=”yantoknuk-singtel”
#psk=”ngumbahkucing”
psk=1e6eb493adf24740e2d3e98759b8b985e69f0bb939931c19400ceeecb61788e1
}
Save and exit nano.
To test the configuration, execute this:
$ sudo wpa_supplicant -iwlan0 -c/etc/wpa_supplicant.conf -Dwext
If it’s successful you should see something like the following:
Trying to associate with 00:ff:00:1e:a7:7d (SSID=’yantoknuk-singtel’ freq=0 MHz)
Associated with 00:ff:00:1e:a7:7d
WPA: Key negotiation completed with 00:ff:00:1e:a7:7d [PTK=TKIP GTK=TKIP]
It’s finish. Your computer is now associated / connected to the access point.
To make it autorun on boot, add in these lines to /etc/network/interfaces:
$ sudo nano /etc/network/interfaces
And add the following lines:
auto wlan0
iface wlan0 inet dhcp
wpa-driver wext
wpa-conf /etc/wpa_supplicant.conf
Headless X11VNC
The answer is actually a combination of two separate solutions, each of which did not work separately. I have 10.04 now working headless on two different servers (different MB, Video…) and both are working great.
Step 1. Create a xorg.conf in /etc/X11 with the following. I tried Step 2 without doing this and it failed exactly as it had before.
Section “Device”
Identifier “VNC Device”
Driver “vesa”
EndSection
Section “Screen”
Identifier “VNC Screen”
Device “VNC Device”
Monitor “VNC Monitor”
SubSection “Display”
Modes “1024×768”
EndSubSection
EndSection
Section “Monitor”
Identifier “VNC Monitor”
HorizSync 30-70
VertRefresh 50-75
EndSection
Step 2. Disable KMS for your video card as described here https://wiki.ubuntu.com/X/KernelModeSetting
The jist is to know which video card manufacturer you have and use the command line entry below it to create the appropriate kms.conf file with the line “options…modeset=0” line in it. If you have access to the GUI you could just are easily create/modify the file and put the “options…modeset=0” in as appropriate.
The following are input into the terminal windows as a line command.
# ATI Radeon:
echo options radeon modeset=0 > /etc/modprobe.d/radeon-kms.conf
# Intel:
echo options i915 modeset=0 > /etc/modprobe.d/i915-kms.conf
# Nvidia (this should revert you to using -nv or -vesa):
echo options nouveau modeset=0 > /etc/modprobe.d/nouveau-kms.conf
Step 3. Reboot…Putty In…startx…GTG!