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183 lines
3.8 KiB
Markdown
183 lines
3.8 KiB
Markdown
<!-- title: Des commandes Linux -->
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# Shell
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Relancer la dernière commande : !!
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Relancer la dernière commande en sudo : sudo !!
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Template Bash ([source betterdev.blog](https://betterdev.blog/minimal-safe-bash-script-template/))
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```shell
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#!/usr/bin/env bash
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set -Eeuo pipefail
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trap cleanup SIGINT SIGTERM ERR EXIT
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script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
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usage() {
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cat << EOF # remove the space between << and EOF, this is due to web plugin issue
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Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]
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Script description here.
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Available options:
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-h, --help Print this help and exit
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-v, --verbose Print script debug info
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-f, --flag Some flag description
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-p, --param Some param description
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EOF
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exit
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}
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cleanup() {
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trap - SIGINT SIGTERM ERR EXIT
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# script cleanup here
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}
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setup_colors() {
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if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
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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'
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else
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NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
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fi
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}
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msg() {
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echo >&2 -e "${1-}"
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}
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die() {
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local msg=$1
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local code=${2-1} # default exit status 1
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msg "$msg"
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exit "$code"
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}
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parse_params() {
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# default values of variables set from params
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flag=0
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param=''
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while :; do
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case "${1-}" in
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-h | --help) usage ;;
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-v | --verbose) set -x ;;
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--no-color) NO_COLOR=1 ;;
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-f | --flag) flag=1 ;; # example flag
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-p | --param) # example named parameter
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param="${2-}"
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shift
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;;
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-?*) die "Unknown option: $1" ;;
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*) break ;;
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esac
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shift
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done
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args=("$@")
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# check required params and arguments
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[[ -z "${param-}" ]] && die "Missing required parameter: param"
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[[ ${#args[@]} -eq 0 ]] && die "Missing script arguments"
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return 0
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}
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parse_params "$@"
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setup_colors
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# script logic here
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msg "${RED}Read parameters:${NOFORMAT}"
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msg "- flag: ${flag}"
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msg "- param: ${param}"
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msg "- arguments: ${args[*]-}"
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```
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# Les fichiers
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All directories will be 775. All files will be 664 except those that were set as executable to begin with
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chmod -R a+rwX,o-w <directory>
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# Compression
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Compresser en préservant les permissions
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tar cvpzf put_your_name_here.tar.gz .
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Compresser en splittant par fichier de 2 Mo
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tar cvzp source/ | split -b 2MiB - backup_part.tgz_
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et décompression
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cat backup_part.tgz_* | tar xz
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Compression moins efficace mais plus rapide avec LZOP :
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tar --lzop -cvf archive.tar.lzo dossier/
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tar xvf archive.tar.lzo
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# Les processus
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Lister les ports ouverts et l'application :
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sudo netstat -pntul
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Donner accès aux ports réservés (<1024) à un processus exécuté par un utilisateur standard
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setcap CAP_NET_BIND_SERVICE=+eip /usr/bin/python3.9
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# Listage
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Lister par date de modif du - récent au + récent
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ls -lrth
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Lister récursivement par taille ascendante
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find . -type f -exec ls -lSr {} +
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Lister les plus gros fichiers ou répertoires
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du -cks * | sort -rn | head
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# Conversion
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du format HEIF (Apple) vers JPEG
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for file in *.heic; do heif-convert $file ${file/%.heic/.jpg}; done
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# Historique
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Vider l'historique de Bash (source [StackOverflow](https://askubuntu.com/questions/191999/how-to-clear-bash-history-completely))
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cat /dev/null > ~/.bash_history && history -c && exit
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[source](https://serverfault.com/questions/746909/journalctl-stop-following-without-exiting-pager)
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```
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# ^C after Shift-F does not completely quit
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journalctl -u nginx | less -FRSXM
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```
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# Nvim
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Supprimer les configurations
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```shell
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rm -rf ~/.config/nvim
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rm -rf ~/.local/share/nvim
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rm -rf ~/.local/state/nvim
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rm -rf ~/.cache/nvim
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```
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Installer [NvChad](https://nvchad.com/)
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