jesugmz

#!/bin/bash

#
# Recursive chmod for directories and files.
#

# all directories within the current path to 755 (-rwxr-xr-x)
find . -type d -exec chmod 755 {} \;

# all files within the current path to 644 (-rw-r--r--)

jesugmz

Extract unique values using Bash

awk

Usage

[command with duplicate output |] awk '!a[$0]++' [filename with duplicate values]

jesugmz

#!/bin/bash

#
# Delete the whole data created by the user. TAKE CARE!!!
#

# kill all running containers
docker kill $(docker ps -q)

# delete all containers

jesugmz

#!/bin/bash

#
# Find files containing a string
#

grep -rnw /path/to/search/ -e "<PATTERN>"

jesugmz

#!/bin/bash

#
# An alternative to killall command
#

kill -9 $(pgrep <PROCESS_NAME>)

jesugmz

Custom DNS docker engine level

Depend of the init system of the OS:

Systems using Upstart and SysVinit

• Add in /etc/default/docker DOCKER_OPTS="--dns <DNS_IP_1> --dns <DNS_IP_2>"
• $ sudo service docker restart

Systems using SystemD

• Add in /etc/docker/daemon.json

jesugmz

# get CONTAINER_ID with 'docker ps'
docker exec -it <CONTAINER_ID> bash

# or with docker-compose
docker-compose exec <CONTAINER_NAME> bash

jesugmz

#
# Avoid the message 'External file changes sync may be slow: The current inotify(7) watch limit is too low.' from JetBrains products.
#
# 1. Create the file /etc/sysctl.d/60-jetbrains.conf and paste this code
# 2. Restart the sysctl service: sudo sysctl -p --system
# 3. Restart the IDE
#
# More info:
# https://confluence.jetbrains.com/display/IDEADEV/Inotify+Watches+Limit

jesugmz

git spreadsheet

Apply commit from another branch

git cherry-pick <COMMIT_HASH_FROM_ANY_BRANCH>

Apply changes of a file from another branch

jesugmz

#!/bin/bash

process() {
    if [ $# -eq 1 ] && ([ "$1" = "-h" ] || [ "$1" = "--help" ]); then
        show_help
    else
        launch_containers

        while true; do
            case $1 in