avkosme

# watch lsof -p`pgrep -x cp`

avkosme

openssl req -x509 -days 365 -nodes -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt

arch
sudo trust anchor nginx-selfsigned.crt

avkosme

git clone --mirror {old_repo_url}
git remote add origin-new {new_repo_url}
git push --mirror origin-new

avkosme

# get total requests by status code
awk '{print $9}' /var/log/nginx/access.log | sort | uniq -c | sort -rn

# get requests by 502 code
awk '($9 ~ /502/)' /var/log/nginx/access.log | awk '{print $7}' | sort | uniq -c | sort -r

# get top requesters by IP
awk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -rn | head | awk -v OFS='\t' '{"host " $2 | getline ip; print $0, ip}'

# get top requesters IP by url

avkosme

Arch issues relosolve
sudo pacman -Syu --dbonly vlc

Find broken lib - arch
sudo pacman -Qkk

# invalid or corrupted package (PGP signature)

sudo pacman -S archlinux-keyring

avkosme

git update-ref -d refs/heads/fix-release/2020.04/3

avkosme

# sudo /sbin/rcvboxdrv -h
# Unloading modules: 
# Loading modules: modprobe: FATAL: Module vboxnetadp not found in directory /lib/modules/4.4.3-1-ARCH
# modprobe: FATAL: Module vboxnetflt not found in directory /lib/modules/4.4.3-1-ARCH
# modprobe: FATAL: Module vboxpci not found in directory /lib/modules/4.4.3-1-ARCH
# modprobe: FATAL: Module vboxdrv not found in directory /lib/modules/4.4.3-1-ARCH

# Solution
# from https://forum.antergos.com/topic/818/can-t-run-my-vitualbox/4

avkosme

SELECT nspname || '.' || relname AS "relation",
    pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"
  FROM pg_class C
  LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
  WHERE nspname NOT IN ('pg_catalog', 'information_schema')
    AND C.relkind <> 'i'
    AND nspname !~ '^pg_toast'
  ORDER BY pg_total_relation_size(C.oid) DESC
  LIMIT 5;

avkosme

find /path/to/source/ -name "*" -exec cp -ruf "{}" /path/to/destination/ \;

# Show files 50 old days long  
find /path/to/source/ -type f -mtime +50 -name "*" -exec ls -ltr "{}" \;

avkosme

// Package main provides ...
package main

import (
  "fmt"
)

func Sqrt(x float64) float64  {

  for z := float64(1); ; {