Bashify

Bashify is a simple python library (also executable as a script) to generate bash scripts that contain files and commands to run, with support for piping data as standard input to the commands that are run.

It will create a temporary directory, change to it, extract all the files from the script, run all the commands in the script, then delete the temporary directory.

It's useful for creating pipe-able scripts, for example:

curl http://example.com/script.sh | bash
cat script.sh | ssh myhost bash

It depends on standard commands like mktemp, base64, chmod

Using it as a module

>>> import sys, bashify
>>> b = bashify.Bashify()
>>> b.add_file("test.txt", data=b"optionally set file contents programmatically")
>>> b.add_command("cat test.txt")
>>> b.dump(sys.stdout)
#!/bin/bash
# SECTION: INIT
set -e
mytmpdir=`mktemp -d`
test -d "$mytmpdir" || exit 255
function bashify_cleanup { cd /; rm -rf "$mytmpdir"; }
trap bashify_cleanup EXIT
cd "$mytmpdir"

# SECTION: FILES
base64 -d > test.txt <<"EOF_b64"
b3B0aW9uYWxseSBzZXQgZmlsZSBjb250ZW50cyBwcm9ncmFtbWF0aWNhbGx5
EOF_b64
# SECTION: COMMANDS
cat test.txt
>>> 

Using it as a script

$ ./bashify.py --help
usage: bashify.py [-h] [--files [FILE [FILE ...]]] [--stdin] [--output OUTPUT]
                  script [args [args ...]]

positional arguments:
  script
  args

optional arguments:
  -h, --help            show this help message and exit
  --files [FILE [FILE ...]], -f [FILE [FILE ...]]
                        add files to script: filename[=destfilename]
  --stdin, -i           embed our stdin as script's stdin
  --output OUTPUT, -o OUTPUT
                        where to write script [stdout]
$ cat hello_world.sh
#!/bin/bash

if [ -n "$1" ]; then
    NAME="$1"
else
    NAME="World"
fi

echo "Hello, $NAME!"

if [[ -e README.md ]]; then
  head -6 README.md | tail -5
fi

cat
$ echo "That's all, Folks..." | ./bashify.py --stdin --files README.md --output myscript.sh -- hello_world.sh Bob
$ ./myscript.sh
Hello, Bob!

Bashify is a simple python library (also executable as a script) to generate
bash scripts that contain files and commands to run, with support for piping
data as standard input to the commands that are run.

That's all, Folks...