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How to Install GraalVM Community Edition on Linux

Note: Tested on Fedora only

1. Download the new release of GraalVM and unpack it anywhere in your filesystem:

$ tar -xvzf graalvm-ce-1.0.0-rc14-linux-amd64.tar.gz

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Compress

tar -cvzf backup.tgz /home/user/project

Extract

tar -xvzf backup.tgz

Copy Lots And Large Files

rsync -avhW --no-compress --progress --exclude 'file_or_dir' /source/ /target/

See Largest 20 Folders

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-- Set Id Seq
SELECT setval('tablename_id_seq', (SELECT MAX(id) FROM public.tablename));

-- Log in
sudo -i -u postgres  
psql dbname username  

-- Backup
sudo -u postgres pg_dump -U postgres -d mydb -F c -f /tmp/mydb.backup

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add PostgreSQL 13 repository

sudo yum -y install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

sudo yum -y update

install PostgreSQL 13 packages

sudo yum -y install postgresql13 postgresql13-server

After fresh installation of PostgreSQL 13 on CentOS 7 initialization is required.

sudo /usr/pgsql-13/bin/postgresql-13-setup initdb

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Find pg_hba.conf file location

bash-4.1$ psql
psql (8.4.20)
Type "help" for help.

postgres=# SHOW hba_file;
            hba_file             

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CentOS 7

Java
yum install java-1.8.0-openjdk

Setting the JAVA_HOME Variable

sudo cp /etc/profile /etc/profile_backup #Backup the profile file in order to prevent unintentional mistakes

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# Find Biggest Files and Directories
# Run the following command to find out top biggest directories under /home partition.
du -a /home | sort -n -r | head -n 5

# To display the largest folders/files including the sub-directories, run:
du -Sh /home | sort -rh | head -5

# PARAMETERS
# du command: Estimate file space usage.
# a : Displays all files and folders.

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<?php

class BreakOut extends Exception {}

function mapGenerator(array $arr, $callback)
{
	$ret = [];
	foreach ($arr as $val) {
		try {
			yield $callback($val);

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# Export
mysqldump -u root site_database > /home/sitename/BCKP001.sql
mysqldump -u root site_database | gzip > /home/sitename/BCKP001.sql.gz
# Ignore specific table
mysqldump -u root site_database --ignore-table=site_database.table1 > /home/sitename/BCKP001.sql
# Export specific table
mysqldump -u root site_database table1 > /home/sitename/BCKP001.sql


# Import

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<div data-secret="<?= htmlspecialchars(json_encode($data), ENT_QUOTES, 'UTF-8') ?>">
  Look at inside me!
</div>