progrium/go-basher

Library for writing hybrid Go and Bash programs

Hello, I'm Jeff! 👋

I'm a creator and entrepreneur known for my work and ideas in open source developer tooling.

I try to push the boundaries of computing as a magical tool and compiler for the imagination.

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go-basher's Issues

plugn-bashenv######### files filling /tmp filesystem

plugn-bashenv######### files are not expunged from /tmp/ and are added for every execution.

This was orignally reported for dokku/plugn#6 and was opened here at the request of @progrium.

Works on ARM

Does anyone know if this works on ARM?

A feature to have bash.Import() ? To read the runtime variables set by bash?

bash.Export() sets an environment variable from golang so that the bash script can read it.

But how to achieve the other way round?

Basically, I want to set some "statuses" regarding the execution of the bash script.. I thought one way would be setting variables and passing them downstream in go.

How to ensure all the output when executing bash scripts are available in golang logger too?

How to publish as a package?

Hi there,

I added go-basher to my command, and have install issue.
toshi0383/ipanema#9

Any idea?

parent signals are not passed to child processes

"I have (as I assume many do) the need to catch SIGTERM upon container shutdown to handle some cleanup. Currently, it seems, herokuish does not pass this through"

ref: gliderlabs/herokuish#64
specfically: gliderlabs/herokuish#64 (comment)

Should honor $PATH for detection of bash binary

On my system, /bin/bash is version 3 and /usr/local/bin/bash is version 4 (which would be common in Mac systems using Homebrew). My $PATH is setup to correctly put /usr/loca/bin before /bin. g-basher should honor $PATH precedence to avoid the following error:

$ gun
/var/folders/1h/xkn96jrj3d71f_s06j8cnmqc0000gn/T/bashenv.271918130: line 75: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]
/var/folders/1h/xkn96jrj3d71f_s06j8cnmqc0000gn/T/bashenv.271918130: line 103: :help: syntax error: operand expected (error token is ":help")
/var/folders/1h/xkn96jrj3d71f_s06j8cnmqc0000gn/T/bashenv.271918130: main: command not found

go command startup footprint

Is this a bash-compatible bash-replacement written in GO, or does this wrap a bash script?

What is the startup footprint of a go-command invoked on the commandline?
Does each go-command already somehow run in memory like a bash-builtin?

REASON: I've been tinkering with an (unreleased) similar version of this (but focused on nodejs).
However, big disappointment was nodejs's startup footprint when executing each command on the commandline.

So far C builtins is the only thing i could use without getting a speed penalty.

goroutine leak in Context.Run?

It seems there is a goroutine leak in Context.Run: https://github.com/progrium/go-basher/blob/master/basher.go#L267 goroutine is launched which iterates over signals chan. But the chan is never closed, so the routine never exits... shouldn't there be something like

defer func() {
   signal.Stop(signals)
   close(signals)
}()

after signal.Notify(signals) call?

Export Variables

How can you export a variable from the .Go to the bash script
example something like
bash.HandleVar("variablename", variablename)
then in the main.bash you can do echo $variablename

is something like that possible?

Support for windows using win-bash

go-basher is neat, however adding win-bash would make this really powerful project. (http://win-bash.sourceforge.net/).

Linux 32-bit support

Hi,

I am getting this error while trying to run a binary built on a 32-bit OS

2017/11/01 15:31:26 exec: not started

Thera re no errors form go-bindata nor go build but execution of the binary fails.

Regards
Matias

Cannot execute the binary on RHEL

I am getting below error while running this on RHEL box. The binary is working fine on Mac and Ubuntu machines.

/tmp/bashenv.235468405: line 35: syntax error near unexpected token `('

/tmp/bashenv.235468405: line 35: export BASH_FUNC_module()=$'() { eval /usr/bin/modulecmd bash $*`'

Any idea whats wrong here?

Go + bash syntax

Hi,

What about making bash + go syntax?

#!basher

export VAR=1

import "fmt"

func print_something (foo string) {
    fmt.Println(foo, $VAR);
}

print_something Mars
print_something Jupiter

An example on how to use the basher.Application() function?

I understand that this can be used in situations where we are not exactly sure if /bin/bash is available in the system or not.

But I'm not able to figure out how to use this function.

It would be great if someone can give an example!

How do I run a specific script as sudo ?

I loaded 3 scripts and embedded them using go-bindata.

In that 2 scripts needs to be run with admin privileges and 1 script should be run as user.

How can I run a specific script as sudo?

In the example code there is only a concept of calling bash functions in go and other way round.

	bash.Source("main.bash", Asset)
	status, err := bash.Run("main", os.Args[1:])
	

What about launching the whole script?

cannot use reverse (type func([]string) int) as type

github.com/progrium/go-basher/example

./example.go:45: cannot use reverse (type func([]string) int) as type func([]string) in argument to bash.ExportFunc
./example.go:46: cannot use jsonPointer (type func([]string) int) as type func([]string) in argument to bash.ExportFunc
make: *** [build] Error 2

Failure on environment variables with quotes in the value

With environment such as ITERM_PROFILE=Andy's iTerm2, go-basher fail because the value isn't properly escaped:

$ gun
/var/folders/1h/xkn96jrj3d71f_s06j8cnmqc0000gn/T/bashenv.242635297: line 160: syntax error near unexpected token `('
/var/folders/1h/xkn96jrj3d71f_s06j8cnmqc0000gn/T/bashenv.242635297: line 160: ` if grep '^init()' "$filename" > /dev/null; then'
/usr/local/bin/bash: main: command not found

hope to add an context support

hope to add the context support like using exec.CommandContext instead of exec.Command

How do we ensure miscellaneous commands(curl .. etc ) are installed?

From the examples

go-basher/example/bash/example.bash

Line 10 in 6a5b35f

curl -s https://api.github.com/repos/progrium/go-basher | json-pointer /owner/login

How do we ensure curl is installed on a system?
I like your idea.
But we can not assume all misc. commands are installed on a system except bash builin functions.

For fully safe portables binaries,
I think binary shoud include all dependent commands(32bit binary) like busybox.

If go-basher include 32bit statically compiled bash, busybox binaries and using only bash builtins + busybox supported commands, we can say it is fully self-executable binary.

Windows build issue, "undefined RestoreAsset"

I'm trying to build a small tool and cross compile it for Windows, however go-basher is giving me this issue:

$ GOOS=windows GOARCH=amd64 go build main.go 
# github.com/progrium/go-basher
../../../../../go/src/github.com/progrium/go-basher/basher.go:52:9: undefined: RestoreAsset

Builds for Linux and OSX seem to work fine, and go run main.go also runs fine. Do you have any insight on how to solve this?