If the two directories are on the same machine,
you can use either colordiff (preferred over diff) or git diff
to find the differences between them.
colordiff -qr dir_1 dir_2
git diff --no-index dir_1 dir_2
It is a little bit tricky when the …
You can list files sorted by time (newest first) using the -t option.
Notice that the -t option is also support by hdfs dfs -ls.
ls -lht
You have to either enclose the pattern in quotes or escape the wildcard in patterns.
Equivalent …
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.