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my_bashrc

Shortcut for Python

alias py2=python2.7
alias py3=python3

For quickly creating Python3 virutal envirnoments

alias pyenv="python3 -m venv"

Shortcut for docker

alias dk=docker

Shortcut for opening a nautilus window in the current dir

alias here="nohup nautilus -w . > /dev/null &"

After some programming in Windows

alias cls=clear

For opening another console

alias another="gnome-terminal & disown"

Shortcut for checking specific open ports

function port() {
  sudo lsof -i:$1
}

port 80

COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
firefox 23363 leon   95u  IPv4    ...      0t0  TCP  ...

Shortcut for displaying all open ports

leon@xarp:~$ ports

Measure curl response time

curltime website.com

Format file is necessary and included in the repository. Add in the home directory. Credits

Open a netcat server in a given port

ncsv <port>

ncsv 8002

Run any command in the background, silently or showing only error outputs

This is though for opening GUI applications without needing to have have another terminal on the background, such as pycharm or gedit.

silent gedit file.txt test.py
silent pycharm .

The function:

  • Starts the command in background and routes the output to /dev/null
  • It is not possible to autocomplete commands after the silent keyword, so type it later if so.
  • Supports any amount of arguments ($@)

Moving around

This is meant for navigating repeatedly around directories with ease.

  • setloc will set a checkpoint at the current directory
  • goback will take us from anywhere to the checkpoint
  • andforth will take us back from where we issued the goback command
  • clearloc it will clear the location
  • showloc will display the checkpoint (setloc) and secondary location (goback/andforth) if any
cd /opt/program
leon@XARP:/opt/program$ setloc
cd ~
leon@XARP:~$ goback
leon@XARP:~$ showloc
Checkpoint location: /tmp
Current location: /tmp
Coming from /home/leon

leon@XARP:/opt/program$ andforth
leon@XARP:~$ clearloc

Calculator

This is an alias for the command bc for simple and quick use. Do NOT add spaces.

leon@xarp:~$ calc 2+2
4

Bash reload

Simply reloads .bashrc file.

Empty a file

Simply wipes the contents of a file. Asks for confirmation. ALso checks for file existence.

leon@xarp:/tmp$ cat a
aaaaaaaa
leon@xarp:/tmp$ empty a
...
leon@xarp:/tmp$ cat a

leon@xarp:/tmp$ empty a
Are you sure you want to clear this file contents? [y/N] n
Cancelled.
leon@xarp:/tmp$ empty a b c
This operation will affect more than one file. Proceed? [y/N] y

leon@xarp:/tmp$ empty
No filename specified

leon@xarp:/tmp$ rm a
leon@xarp:/tmp$ empty a
Are you sure you want to clear this file contents? [y/N] y
File 'a' does not exist

Yes or no?

A function for modularizing decisions in scripts.

yes_or_no "Are you sure you want to clear this file contents?"
if [ $? -eq 1 ]; then
  echo "yes"
elif [ $? -eq 0]; then
  echo "no"
else
  echo "Not valid input"
fi

Set title

Sets the title of a shell terminal. Does not work for zsh Credits

# Spaces allowed, sets the title of the bash terminal
set-title my new tab title

# Returns the title to the original
set-title

Wait countdown message

Displays a wait custom message. It will wait as many seconds as specified in the first argument and display a message accoding with the second argument.

The function counts down to zero from the amount of seconds specified. Instead of generating a new line, the command will update its line.

wait_msg 5 "Skipping this part"
Skipping this part [5 s]

List directory time sorted

An alias for ls which displays the contents sorted by most recent modification and the reversed equivalent.

$ touch a
$ touch b
$ ltr
 a
 b
$ lt
 b
 a