Add notes

notes/gists.md

@@ -0,0 +1,55 @@
+<!-- title: Des Gists -->
+
+### Python : serveur HTTP pour log des requêtes / réponses
+
+```python
+#!/usr/bin/env python3
+"""
+Very simple HTTP server in python for logging requests
+Usage::
+    ./server.py [<port>]
+"""
+from http.server import BaseHTTPRequestHandler, HTTPServer
+import logging
+
+class S(BaseHTTPRequestHandler):
+    def _set_response(self):
+        self.send_response(200)
+        self.send_header('Content-type', 'text/html')
+        self.end_headers()
+
+    def do_GET(self):
+        logging.info("GET request,\nPath: %s\nHeaders:\n%s\n", str(self.path), str(self.headers))
+        self._set_response()
+        self.wfile.write("GET request for {}".format(self.path).encode('utf-8'))
+
+    def do_POST(self):
+        content_length = int(self.headers['Content-Length']) # <--- Gets the size of data
+        post_data = self.rfile.read(content_length) # <--- Gets the data itself
+        logging.info("POST request,\nPath: %s\nHeaders:\n%s\n\nBody:\n%s\n",
+                str(self.path), str(self.headers), post_data.decode('utf-8'))
+
+        self._set_response()
+        self.wfile.write("POST request for {}".format(self.path).encode('utf-8'))
+
+def run(server_class=HTTPServer, handler_class=S, port=8080):
+    logging.basicConfig(level=logging.INFO)
+    server_address = ('', port)
+    httpd = server_class(server_address, handler_class)
+    logging.info('Starting httpd...\n')
+    try:
+        httpd.serve_forever()
+    except KeyboardInterrupt:
+        pass
+    httpd.server_close()
+    logging.info('Stopping httpd...\n')
+
+if __name__ == '__main__':
+    from sys import argv
+
+    if len(argv) == 2:
+        run(port=int(argv[1]))
+    else:
+        run()
+```
+

notes/memo_distrib.md

@@ -0,0 +1,84 @@
+<!-- title: Mémo par distrib -->
+
+# Arch
+
+Supprimer les dépendances des paquets orphelins
+
+    pacman -Rsn $(pacman -Qtdq)
+
+# Fedora 
+
+Historique des transactions **dnf** 
+
+    dnf history list
+
+Liste des paquets installés
+
+    dnf list installed
+
+Liste des dépôts installés 
+
+    dnf repolist
+
+Désactiver un dépôt 
+
+    sudo dnf config-manager --set-disabled zing
+
+Grub EFI 
+
+    grub2-mkconfig -o /boot/grub2/grub.cfg
+    dnf reinstall grub2-efi shim
+
+([Source](https://docs.fedoraproject.org/en-US/fedora/latest/system-administrators-guide/kernel-module-driver-configuration/Working_with_the_GRUB_2_Boot_Loader/))
+
+#  NixOs 
+
+Recherche des paquets disponibles (ou [sur le site officiel](https://search.nixos.org/packages))
+
+    nix-env -qa --description '.*libtmux.*'
+
+Installer un paquet 
+
+    nix-env -i <nom du paquet>
+
+Désinstaller un paquet
+
+    nix-env --uninstall <nom du paquet>
+
+lister les paquets installés 
+
+    nix-env -qa --installed "*"
+
+lister les canaux 
+
+    nix-channel --list
+
+Mettre à jour tous les canaux
+
+    nix-channel --update 
+
+Mettre à jour tous les paquets 
+
+    nix-env -u    
+
+Gérer les versions 
+
+    nix-env --list-generations    
+    nix-env --delete-generations old
+
+Rollbacker
+
+    nix-env --rollback 
+
+# WSL
+
+Problème de tail entre WSL et NTFS : 
+
+    tail -F ---disable-inotify <mon_fichier>
+
+Pour transférer une machine WSL sur une autre machine, il faut compresser avec le mode "sensitive case mode" : 
+
+    7z.exe a  debian.7z Debian\* -ssc -r
+
+
+

notes/unix.md

@@ -6,6 +6,98 @@ Relancer la dernière commande : !!
 
 Relancer la dernière commande en sudo : sudo !!
 
+Template Bash ([source betterdev.blog](https://betterdev.blog/minimal-safe-bash-script-template/))
+
+```shell
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+
+usage() {
+  cat << EOF # remove the space between << and EOF, this is due to web plugin issue
+Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]
+
+Script description here.
+
+Available options:
+
+-h, --help      Print this help and exit
+-v, --verbose   Print script debug info
+-f, --flag      Some flag description
+-p, --param     Some param description
+EOF
+  exit
+}
+
+cleanup() {
+  trap - SIGINT SIGTERM ERR EXIT
+  # script cleanup here
+}
+
+setup_colors() {
+  if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
+    NOFORMAT='\033[0m' RED='\033[0;31m' GREEN='\033[0;32m' ORANGE='\033[0;33m' BLUE='\033[0;34m' PURPLE='\033[0;35m' CYAN='\033[0;36m' YELLOW='\033[1;33m'
+  else
+    NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
+  fi
+}
+
+msg() {
+  echo >&2 -e "${1-}"
+}
+
+die() {
+  local msg=$1
+  local code=${2-1} # default exit status 1
+  msg "$msg"
+  exit "$code"
+}
+
+parse_params() {
+  # default values of variables set from params
+  flag=0
+  param=''
+
+  while :; do
+    case "${1-}" in
+    -h | --help) usage ;;
+    -v | --verbose) set -x ;;
+    --no-color) NO_COLOR=1 ;;
+    -f | --flag) flag=1 ;; # example flag
+    -p | --param) # example named parameter
+      param="${2-}"
+      shift
+      ;;
+    -?*) die "Unknown option: $1" ;;
+    *) break ;;
+    esac
+    shift
+  done
+
+  args=("$@")
+
+  # check required params and arguments
+  [[ -z "${param-}" ]] && die "Missing required parameter: param"
+  [[ ${#args[@]} -eq 0 ]] && die "Missing script arguments"
+
+  return 0
+}
+
+parse_params "$@"
+setup_colors
+
+# script logic here
+
+msg "${RED}Read parameters:${NOFORMAT}"
+msg "- flag: ${flag}"
+msg "- param: ${param}"
+msg "- arguments: ${args[*]-}"
+
+``` 
+
 # Les fichiers
 
 All directories will be 775. All files will be 664 except those that were set as executable to begin with
@@ -68,3 +160,11 @@ Vider l'historique de Bash (source [StackOverflow](https://askubuntu.com/questio
 
     cat /dev/null > ~/.bash_history && history -c && exit
 
+
+[source](https://serverfault.com/questions/746909/journalctl-stop-following-without-exiting-pager)
+
+```
+# ^C after Shift-F does not completely quit
+journalctl -u nginx | less -FRSXM
+```
+