bash note for personal use

shell

# fix MAMP common issue, myslq wont start but apache is start
killall -9 mysqld

# check bash type
/usr/bin/printenv

# node and npm path, write on .bash_profile
echo 'export PATH=$PATH:/usr/local/bin' >> $HOME/.bash_profile

# uninstall npm package
npm -g uninstall <name> --save  # globally
npm uninstall <name> --save # locally

# see all installed packages
dpkg -l

# change keyboard layout
https://www.raspberrypi.org/forums/viewtopic.php?f=6&t=5278

# setup wifi via terminal
http://www.howtogeek.com/167425/how-to-setup-wi-fi-on-your-raspberry-pi-via-the-command-line/

# configure network interface
ifconfig

# open wifi manager raspberry pi
wpa-gui

# get more detail wireless interfaec
iwlist

# automatic configuration sudo apt-get install
# if we facing error like E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
dpkg --configure -a

# fix broken package 
apt-get install -f

# to customize prompt mac
1. nano .bash_profile
2. add line
   export PS1="<string_that_you_want>"
3. save

# mount usb
# 1. after you plug usb on raspi, if there no autorun, run this command
ls -l /dev/disk/by-uuid/

# then check if there was a "sda", thats your usb FD
# 2. create mount point
  sudo mkdir /media/[name_up2u]
# 3. manually mount the drive
  sudo mount /dev/sda/ /media/usb/ -o uid=pi,gid=pi
# 4. open window form terminal
  xdg-open /media/[name_up2u]
# 5. unmount
  umount /media/usb
  
# open current directory on mac
open .

# delete all files in this current path except file with *txt
find . -type f -not -name '*txt' | xargs rm

# connect mysql
mysql -u root -p

# download file on vps
scp {user}@{server}:{remote file} {local destination directory}
vice versa if you want to upload

# check current type of shell
echo $0
or
ps -p $$

# check current shell path
echo $SHELL

# steps to change your shell into zsh
http://sourabhbajaj.com/mac-setup/iTerm/zsh.html

# make a bash script 
1. write a #!/bin/bash on the top of the line
2. write down your script
3. save it on /usr/local/bin with <filename>.sh
4. chmod u+x <filename>.sh, so your file could be execute
5. check your PATH in .bash_profile, are the /usr/local/bin been writed down on your PATH chains.

# GITHUB pull, remove, and push edit
cd /tmp
git clone /your/local/rep  # make a temp copy
cd rep
git rm -r *                # delete everything
cp -r /your/local/rep/* .  # get only the files you want
git add *                  # add them again
git status                 # everything but those copied will be removed
git commit -a -m 'deleting stuff'
cd /your/local/rep
git push

# cek SSH di ~/
ls -al ~/.ssh

# copy something to clipboard, in this case I wanna to copy my SSH
pbcopy < ~/.ssh/id_rsa.pub

# reset commit 
git reset HEAD~
# reset commit dalam keadaan kalau di current local repo masih ada commit
git reset --hard HEAD~1

# Executing BASH file (.sh)
chmod +x 'path/yourscript.sh'
./yourscript.sh

# Create CSR
openssl req -new -newkey rsa:2048 -nodes -keyout yourdomain.key -out yourdomain.csr