eggplants

#!/usr/bin/env bash
# ref: https://git.521000.bestmunity/t/how-to-check-if-a-container-image-exists-on-ghcr/154836/3

# public image's {USER}/{IMAGE}
USER_IMAGE=eggplants/asciiquarium-docker

# get token ('{"token":"***"}' -> '***')
TOKEN="$(
  curl "https://ghcr.io/token?scope=repository:${USER_IMAGE}:pull" |
  awk -F'"' '$0=$4'

jbaranski

Open Port 80 Oracle Cloud Compute Instance (CentOS)

FYI This was harder than it needed to be:

1. Looking at your instance info, find VNIC section, click "Public Subnet".
2. Click on your security list.
3. Add a new entry with the following options:

• "Stateless" = No, "Source" = 0.0.0.0/0, "IP Protocol" = TCP, "Source Port Range" = All, "Destination Port Range" = 80

4. SSH to your instance.
5. While SSH'ed in your instance, run command firewall-cmd --permanent --add-service=http.
6. While SSH'ed in your instance, run command firewall-cmd --reload.
7. Now start Apache, NGINX, or whatever server you need to on port 80. You can now access from the internet.

BigOokie

Use the following pattern for `pgrep` to identify a running process that contains specific commandline parameters

Note the following pgrep options are needed:
-a, --list-full           list PID and full command line
-f, --full                use full process name to match
-c, --count               count of matching processes


To find a specific process with a specific commandline parameter use the following:
pgrep -a -f "{processname}.*{commandline param}"

caruccio

This example shows how to read options and positional arguments from a bash script (same principle can be applied for other shells).

# some global var we want to overwrite with options
force=false
help=false
log=info
ARGS=() ### this array holds any positional arguments, i.e., arguments not started with dash

while [ $# -gt 0 ]; do

william8th

# Set the control character to Ctrl+Spacebar (instead of Ctrl+B)
set -g prefix C-space
unbind-key C-b
bind-key C-space send-prefix

# Set new panes to open in current directory
bind c new-window -c "#{pane_current_path}"
bind '"' split-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"

mihow

# The initial version
if [ ! -f .env ]
then
  export $(cat .env | xargs)
fi

# My favorite from the comments. Thanks @richarddewit & others!
set -a && source .env && set +a

subfuzion

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

dedunumax

##############################
## Java
##############################
.mtj.tmp/
*.class
*.jar
*.war
*.ear
*.nar
hs_err_pid*

thomasfr

[Unit]
Description=Keeps a tunnel to 'remote.example.com' open
After=network.target

[Service]
User=autossh
# -p [PORT]
# -l [user]
# -M 0 --> no monitoring
# -N Just open the connection and do nothing (not interactive)

shawnbutts

def bytesto(bytes, to, bsize=1024):
    """convert bytes to megabytes, etc.
       sample code:
           print('mb= ' + str(bytesto(314575262000000, 'm')))

       sample output: 
           mb= 300002347.946
    """

    a = {'k' : 1, 'm': 2, 'g' : 3, 't' : 4, 'p' : 5, 'e' : 6 }