pypsi 1.2.1

Variables

pypsi)> var name = "Paul"

pypsi)> var house = "Atredis"

pypsi)> echo My name is $name, and I belong to House $house

My name is Paul, and I belong to House Atredis

pypsi)> var -l

name     Paul
house    Atredis

pypsi)> var -d name

pypsi)> echo $name

pypsi)> var name = "Paul $house"

pypsi)> echo $name

Paul Atredis

I/O redirection

pypsi)> echo Hello

Hello

pypsi)> echo Hello > output.txt

pypsi)> echo Goodbye

pypsi)> xargs -I{} "echo line: {}" < output.txt

line: Hello
line: Goodbye

pypsi)> cat output.txt | grep ll

Hello

System commands

Allows execution of external applications. Command mimics Python’s os.system() function.

pypsi)> ls

pypsi: ls: command not found

pypsi)> system ls

include/
src/
README.md

pypsi)> system ls | system grep md

README.md

Fallback command

Allows the developer to set which command gets called if one does not exist in the current shell. This is very useful, for example, if you want to fallback on any OS installed executables. In this example, the fallback command is system.

pypsi)> ls

include/
src/
README.md

Command chaining

pypsi)> echo Hello && echo --bad-arg && echo goodbye

Hello
echo: unrecgonized arguments: --bad-arg

pypsi)> echo Hello ; echo --bad-arg ; echo goodbye

Hello
echo: unrecgonized arguments: --bad-arg
goodbye

pypsi)> echo --bad-arg || echo first failed

echo: unrecgonized arguments: --bad-arg
first failed

Multiline commands

pypsi)> echo Hello, \
> Dave

Hello, Dave

pypsi)> echo This \
> is \
> pypsi \
> and it rocks

This is pypsi and it rocks

Macros

Macros are analogous to functions in bash. They provide the ability to create new commands in the shell.

pypsi)> macro hello
> echo Hello, $1
> echo Goodbye from macro $0
> end

pypsi)> hello Adam

Hello, Adam
Goodbye from macro hello

Prompt Wizards

Prompt wizards ask the user a series of questions and request input. Input is tab completed, validated, and returned. The wizard can be used for easy configuration of components that require a substantial amount of input.

pypsi)> wizard
+-----------------------------------------------------------------------------+
|                    Entering Example Configuration Wizard                    |
+-----------------------------------------------------------------------------+
Shows various examples of wizard steps

To exit, enter either Ctrl+C, Ctrl+D, or 'quit'. For help about the current
step, enter 'help' or '?'.

IP Address: <enter>

Error: Value is required
Local IP Address or Host name

IP Address: 192.168.0.10

TCP Port [1337]: <enter>

File path: /var/lo<tab>

local/  lock/   log/

File path: /var/log/<tab>

Xorg.1.log        btmp              faillog           upstart/
Xorg.1.log.old    dist-upgrade/     fontconfig.log    wtmp
alternatives.log  distccd.log       fsck/
apt/              dmesg             lastlog
bootstrap.log     dpkg.log          mongodb/

File path: /var/log/dpkg.log

Shell mode [local]: asdf

Error: Invalid choice

Mode of the shell

Shell mode [local]: remote

Config ID    Config Value
================================================================================
ip_addr      172.16.11.204
port         1337
path         /var/log/dpkg.log
mode         remote