It is possible to create the jobs in jenkins using Groovy.
You can create a Groovy script file $JENKINS_HOME/init.groovy, or any .groovy file in the directory $JENKINS_HOME/init.groovy.d/, to run some additional things right after Jenkins starts up.
In Ubuntu $JENKINS_HOME is by default configured in /var/lib/jenkins/
You can use openconnect to connect to a Juniper VPN:
openconnect --juniper mivpn.es
It will parse the web and will ask you for user/password.
But sometimes this does not work, so you would have to login via web and then copy the cookie DSID:
openconnect --juniper -C "DSID=ab353bbbcd677e8adf5a2f335b6c77ac" mivpn.es
Problem:
You have a CSV lines with new line breaks and you need one line per entry.
Solution:
A simple solution could be:
sed ':a;N;$!ba;s/\r\n/ /g' myfile.csv > myfile_no_nline.csv
If the new lines inside the CSV body are Windows new lines (\r\n) and the CSV lines are UNIX (\n).
But normally you are not so lucky. So if your CSV new lines are between quotes (“) you can use the following command:
cat myfile.csv | gawk -v RS='"' 'NR % 2 == 0 { gsub(/\n/, "") } { printf("%s%s", $0, RT) }' > myfile_no_nline.csv
Problem:
You transfer a file to a remote computer via scp:
scp my_favourite_file.tar.gz user@192.168.16.2:~
But before the transfer is completed the connection is broken.
How can I continue the transfer from the point it broke?
Solution:
rsync -P -e ssh my_favourite_file.tar.gz user@192.168.16.2:~
This intends to be a list of easy to find useful commands for working with docker. If you are looking for information about docker go to Docker docs homepage
I want to remove the 1st and the 5th columns of a text file of tab separated values. The file is as follows:
HEAD1 HEAD2 HEAD3 HEAD4 HEAD5 HEAD6 1.0 -3 3.4 2 7 9 -100 -30 -1 0 -80 7 70 7 8 0 3 0 71 4.5 2.1 0.6 37 4
I want to share my Interent connection from my linux to another equipment.
First you have to enable NAT in your linux,
as root you must type:
# iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
Then, logged as root, you have to enable IP forwarding.
There are two ways:
# sysctl -w net.ipv4.ip_forward=1
or
# echo 1 > /proc/sys/net/ipv4/ip_forward
Now you have to configure in your other device the IP of your linux as default gateway.
And that’s all folks!
If you have problems with iptables and you want to remove all the rules write:
iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT
To record what appears on the screen or in an application you can use the program recordmydesktop
To record the whole screen use:
$ recordmydesktop -o screencast.ogv
By default it uses a low frame rate and recods audio, If you want to use a higher frame rate without audio:
$ recordmydesktop --no-soundo --fps 24 -o screencast.ogv
Probably you want to record a window application, not the whole screen. To do that you fist need to know the Window id which can be obtained with the xwininfo command:
$ xwininfo
xwininfo: Please select the window about which you
would like information by clicking the
mouse in that window.
xwininfo: Window id: 0x1a00003 "5554:intel17"
Absolute upper-left X: 1467
Absolute upper-left Y: 122
Relative upper-left X: 1
Relative upper-left Y: 32
Width: 712
Height: 800
Depth: 24
Visual: 0x22
Visual Class: TrueColor
Border width: 0
Class: InputOutput
Colormap: 0x1a00010 (not installed)
Bit Gravity State: ForgetGravity
Window Gravity State: NorthWestGravity
Backing Store State: NotUseful
Save Under State: no
Map State: IsViewable
Override Redirect State: no
Corners: +1467+122 -781+122 -781-128 +1467-128
-geometry 712x800+1466+90
In this case we are trying to record from the Android emulator. I know that for this purpose, if your android emulator version is 4.4 or higher, you can use the following commands over command-line:
$ adb shell screenrecord /sdcard/demo.mp4 $ adb pull /sdcard/demo.mp4
But in this case we are going to record from the host PC. So, if you want to record some part of the window, in our example the window has 480px and the remainder are just window decorators, write the following:
recordmydesktop --no-sound --windowid 0x1a00003 --fps 24 --width 480 -o screencast.ogv
