NOTE: the article talks about sampling "lines" rather than "records".
If a records can occupy multiple lines,
e.g., if any field contains a new line (\n),
the following tutorial does not work
and you have to fall back to more powerful tools such as Python or R.
Let's say …
** Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement! **
Both adduser and useradd can be used to create a new user.
adduser is interactive while useradd is non-interactive.
It is suggested that you use useradd in batch …
Get information of the staff group.
$ getent group staff
staff:x:20:
Get group ID of the staff group.
$ getent group staff | cut -d: -f3
20
Get information of the staff group.
$ dscl . -read /Groups/staff
Get group ID of the staff group.
$ dscl . -read /Groups/staff | awk …You can install open JDK 8 on Ubuntu 14.04 using the following commands.
sudo add-apt-repository ppa:openjdk-r/ppa
wajig update
wajig install openjdk-8-jdk
For more please refer to https://askubuntu.com/questions/464755/how-to-install-openjdk-8-on-14-04-lts.
There are several ways to add users to a group in Linux.
The following uses the sudo group as illustration.
gpasswd, usermod and adduser can all be used to add a user to a given group.
However, it is suggested that you use gpasswd as it is more portable and …
** Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement! **
The portable versions has some problems
Cygwin portable scroll doesn't work after Vim is opened and then closed. but if …