AlexBaranowski

#!/usr/bin/env bash
[ -z "$PGDATA" ] && echo "PGDATA is not defined!" && exit 1
[ ! -e $PGDATA/postmaster.pid ] && echo "Cannot find $PGDATA/postmaster.pid is PostgreSQL server running?" && exit 1
PG_PID=$(head -1 $PGDATA/postmaster.pid)
PG_MEM_U=$(grep ^VmPeak /proc/$PG_PID/status | awk '{print $3}')
HP_MEM_U=$(grep ^Hugepagesize /proc/meminfo | awk '{print $3}')
[ "$PG_MEM_U" != "$HP_MEM_U" ] && echo "The units differ please calculate the Huge Pages manually" && exit 1
PG_MEM=$(grep ^VmPeak /proc/$PG_PID/status | awk '{print $2}')
HP_MEM=$(grep ^Hugepagesize /proc/meminfo | awk '{print $2}')

AlexBaranowski

#!/usr/bin/env bash
# Author: Alex Baranowski

# This is trivial backup script
# Backup should be done on **different** physical disk, and as any other file can be moved &&|| replicated.

# Stop on the first error
set -e

[[ -v "$KEEP_DAYS" ]] || KEEP_DAYS=120

AlexBaranowski

# Simple script that get UUIDs and remove virtualbox disk (hdds).

hdds=$(vboxmanage  list hdds | grep '^UUID' | awk '{ print $2}')
for hd in $hdds; do vboxmanage closemedium disk $hd --delete; done

AlexBaranowski

#!/bin/bash
# Author: Aleksander Baranowski
# License: MIT (https://choosealicense.com/licenses/mit/)
# This simple script looks for changed .sh file from the last git commit
# then run shellcheck on them.
# USAGE: shellcheck_ci repo_root_dir

# Exit codes:
# 98 - required command is not installed
# 1 - some file failed check

AlexBaranowski

# simple script to remove all libvirt images

for i in $(sudo virsh vol-list --pool default | awk '{print $1}'); do sudo  virsh vol-delete --pool default $i; done

AlexBaranowski

For more background, see https://alan.ivey.dev/posts/2020/creating-an-ami-for-arm/.

Install Packer 1.5 or higher (template developed against v1.5.6). Ensure you have appropriate permissions for creating AMIs with Packer and Packer can access in your shell environment.

Build:

packer build centos8.pkr.hcl

AlexBaranowski

#include <stdio.h>
#include "hello2.c"
void print_hello(){
    printf("Hello, World!\n");
}
int main(){
    print_hello();
    print_pi();
    return 0;
}

AlexBaranowski

#include<stdio.h>
int main(){
    int i, j;
    for (i=0; i < 100000;i++){
        for (j=0; j < 100000;j++){
        }
    }
    printf("Finish!");
}

AlexBaranowski

#include<sys/sysinfo.h>
#include<stdio.h>

// NOTE: FSHIFT might differ

#define FSHIFT		16
#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
#define LOAD_INT(x) ((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)

AlexBaranowski

#!/usr/bin/python3

# Copyright © 2021 Red Hat, Inc
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 3
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,