Linux Consultant – Page 1576 – Your source for all things Linux

June 20, 2018 | by Scott Kilroy

Inspect your local docker images

docker inspect IMAGENAME

June 20, 2018 | by Scott Kilroy

Get docker host ip

run echo $DOCKER_HOST

June 20, 2018 | by Scott Kilroy

Export a docker container

Export a container (for use with amazon web services for example) by running the following command: docker export CONTAINERNAME > NAME.tar for example docker export fsk-apache > fsk-apache.tar

June 20, 2018June 20, 2018 | by Scott Kilroy

Build a docker base image

See docker documentation http://docs.docker.com/engine/articles/baseimages/

June 20, 2018 | by Scott Kilroy

Build your docker image

docker build -t GROUPNAME/DOCKERPAGENAME:VERSION DIRECTORY so for example docker build -t example/ docker-node-hello:latest .

June 20, 2018 | by Scott Kilroy

If you’re using linux you can install docker by doing the following: ubuntu apt-get install docker.io sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker Fedora yum -y install docker-io Mac OSX Install the docker toolbox Windows Also has a tool box but I’ve never used it. Docker Cheatsheet https://github.com/wsargent/docker-cheat-sheet

June 20, 2018 | by Scott Kilroy

Amazon – recommended repo

The default repos for Amazon’s Centos are lacking a lot. Add this repo to the default Amazon Centos setup. in /etc/yum.repos.d/ius.repo comment out: mirrorlist=http://dmirr.iuscommunity.org/mirrorlist?repo=ius-el5&arch=$basearch add: baseurl=http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/$basearch

June 20, 2018 | by Scott Kilroy

Updating Drupal

The best way to handle minor updates is to first back everything up (your web directory and your database) then download the new version of drupal to a directory (lets use ~/drupalupdate as the download directory and /var/www/html as the webdirectory) cd into the download directory and run the following command find * -type f -exec echo cp {} /var/www/html/{} \; This one just test everything and echos what it would really do. If everything looks good run find * […]

June 20, 2018 | by Scott Kilroy

Print the total bytes of files in a directory grouped by date

ls -l|awk ‘length($6)==3{x[$6″ “$7]+=$5};END{for(i in x)printf”%s:\t%d\n”,i,x[i]}’

June 20, 2018 | by Scott Kilroy

Optimize and repair all mysql tables

mysqlcheck -o -u root -p –all-databases

June 20, 2018 | by Scott Kilroy

Reset the mysql root password

Stop the mysql daemon Restart mysql using the command mysqld_safe –skip-grant-tables Now you should be able to connect as root Once connected run the following: update user set Password=PASSWORD(‘new-password’) where user=’root’; then flush privileges exit mysql restart mysql and you should be able to login with the new password

June 19, 2018 | by Scott Kilroy

See all open ports

lsof -i TCP| fgrep LISTEN

June 19, 2018 | by Scott Kilroy

Remove top navbar from wordpress

Edit wp-includes/functions.php and add the following add_action(‘after_setup_theme’, ‘remove_admin_bar’); function remove_admin_bar() { if (!current_user_can(‘administrator’) && !is_admin()) { show_admin_bar(false); } } Now the top navbar will only showup for admin users.

June 19, 2018 | by Scott Kilroy

Inspect your local docker images

Get docker host ip

Export a docker container

Build a docker base image

Build your docker image

Installing docker

Amazon – recommended repo

Updating Drupal

Print the total bytes of files in a directory grouped by date

Optimize and repair all mysql tables

Reset the mysql root password

See all open ports

Remove top navbar from wordpress

Find the largest file in a directory tree

Compress the contents current directory, but compress the smallest files first

Using netstat

View network traffic (by port number)

VIM guide

Filter duplicate lines from a sorted files

Debugging bash scripts