haeramkeem

#!/bin/bash

# Source of this solution: https://askubuntu.com/a/1242739
sudo su -
mkdir /etc/gcrypt
echo all >> /etc/gcrypt/hwf.deny
apt-get update

haeramkeem

#!/bin/bash

# Check if given port is in use
netstat -an | grep ${PORT}

# Check all TCP listening port and its process name
netstat -nlpt

haeramkeem

#!/bin/powershell

# Enable / Disable hypervisor to use WSL2 with VirtualBox
#   ref: https://github.com/MicrosoftDocs/WSL/issues/798#issuecomment-1063862157
# Enable hypervisor
bcdedit /set hypervisorlaunchtype auto
# Disable hypervisor
bcdedit /set hypervisorlaunchtype off

haeramkeem

#!/bin/bash

# download .deb from apt
#   download the packages with all dependencies included from apt
#       `grep -v "i386"` will discard all dependencies with i386 architecture
#       ref: https://stackoverflow.com/a/45489718
#   usage:
#       $1: package name (only one permitted)
#       $2: package save directory path (mkdir if path not found)
function dl_deb {

haeramkeem

#!/bin/bash

go test -run __functionName__

haeramkeem

#!/bin/bash
# https://stackoverflow.com/a/1371283

result=${PWD##*/}          # to assign to a variable

printf '%s\n' "${PWD##*/}" # to print to stdout
                           # ...more robust than echo for unusual names
                           #    (consider a directory named -e or -n)

printf '%q\n' "${PWD##*/}" # to print to stdout, quoted for use as shell input

haeramkeem

#!/bin/bash

mysqldump -u username -p databasename > filename.sql # dump database
mysqldump -u username -p databasename tablename1 tablename2 > filename.sql #dump tables

haeramkeem

#!/bin/bash

# ssh example
ssh -T -o StrictHostKeyChecking=no ${USERNAME}@${IP}

# scp example
# Remeber `scp [OPTIONS] [FROM] [TO]`
# 1) send
scp -T -o StrictHostKeyChecking=no -r ${DIRECTORY} ${USERNAME}@${IP}:${PATH}
# 2) receive

haeramkeem

#!/bin/sh
# ref: https://stackoverflow.com/a/28786207
cat -

haeramkeem

#!/bin/bash

kubectl get events --field-selector type=Warning # get all 'Warning' events
kubectl logs $POD_NAME