| # List block devices | |
| lsblk | |
| NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT | |
| sda 8:0 0 238.5G 0 disk | |
| ├─sda1 8:1 0 200M 0 part /boot/efi | |
| ├─sda2 8:2 0 500M 0 part /boot | |
| └─sda3 8:3 0 237.8G 0 part | |
| ├─fedora-root 253:0 0 50G 0 lvm / | |
| ├─fedora-swap 253:1 0 2G 0 lvm [SWAP] | |
| └─fedora-home 253:2 0 185.9G 0 lvm |
| # https://stackoverflow.com/a/28776166 | |
| sourced=0 | |
| if [ -n "$ZSH_EVAL_CONTEXT" ]; then | |
| case $ZSH_EVAL_CONTEXT in *:file) sourced=1;; esac | |
| elif [ -n "$KSH_VERSION" ]; then | |
| [ "$(cd $(dirname -- $0) && pwd -P)/$(basename -- $0)" != "$(cd $(dirname -- ${.sh.file}) && pwd -P)/$(basename -- ${.sh.file})" ] && sourced=1 | |
| elif [ -n "$BASH_VERSION" ]; then | |
| [ "$0" != "$BASH_SOURCE" ] && sourced=1 | |
| else # All other shells: examine $0 for known shell binary filenames | |
| # Detects `sh` and `dash`; add additional shell filenames as needed. |
| A note about using gmail as a relay | |
| Gmail by default does not allow email clients that don't use OAUTH 2 for authentication (like Thunderbird or Outlook). | |
| First you need to enable access to "Less secure apps" on your google settings. | |
| Serveur de courrier entrant (IMAP) imap.gmail.com | |
| SSL requis : oui | |
| Port : 993 |
| Copy FOLDER_1 into PATH_B and preserve all attributes | |
| sudo rsync -avihXP --info=progress2 --stats /PATH_A/FOLDER_1/ /PATH_B/ | |
| * use --dry-run to test | |
| * for encoding char problems between Mac/Linux : https://serverfault.com/questions/638316/rsync-iconv-option-on-mac-not-working-sync-from-remote-linux-server-to-local | |
| ** rsync initiated from Mac : --iconv=utf-8-mac,utf-8 | |
| ** rsync initiated from Linux : --iconv=utf-8,utf-8-mac |
| #https://stackoverflow.com/a/10965292 | |
| [ -n "$var" ] && echo "var is set and not empty" | |
| [ -z "$var" ] && echo "var is unset or empty" | |
| [ "${var+x}" = "x" ] && echo "var is set" # may or may not be empty | |
| [ -n "${var+x}" ] && echo "var is set" # may or may not be empty | |
| [ -z "${var+x}" ] && echo "var is unset" | |
| [ -z "${var-x}" ] && echo "var is set and empty" |
Guide to :
Some other informations :
| # Solutions from https://stackoverflow.com/a/20855353 | |
| # SOLUTION 1 : analyse at the current level of execution (do not step into code) | |
| # get https://www.f-hauri.ch/vrac/cours_truc-et-astuces_2012-04-03/add/elap.bash-v2 |
| traefik: | |
| image: traefik:v2.1.6 | |
| container_name: traefik | |
| volumes: | |
| - "traefik.enable=true" | |
| - /var/run/docker.sock:/var/run/docker.sock:ro | |
| - ./traefik-conf.yml:/etc/traefik/traefik.yml | |
| - ./traefik-services.yml:/etc/traefik/services.yml | |
| labels: | |
| - "traefik.http.routers.blog.entrypoints=web_main" |
| # launch a shell with an empty env | |
| # https://unix.stackexchange.com/a/291913 | |
| env -i bash --noprofile --norc | |
| # source var file and show a specific var | |
| env -i bash --noprofile --norc -c ". somefile.sh; echo $VAR;" | |
| # backup/restore env | |
| # https://unix.stackexchange.com/questions/284382/export-save-and-import-source-shell-variables |
| # count number of active task inside of all user crontab | |
| # sample with excluding a string containing "str" | |
| for c in $(sudo ls /var/spool/cron); do sudo crontab -u $c -l 2>/dev/null | grep -v -e '^$' | grep -v -e '^#' | grep -v "crontab;" | grep -v "str"; done | wc -l |