Merge ~alexmurray/ubuntu-security-tools:restore-uaudit-command into ubuntu-security-tools:master

[Alex Murray]

audits: add uaudit wrapper script to restore old behaviour

This allows one to run uaudit again without having to install it first
via pipx etc

Signed-off-by: Alex Murray <email address hidden>

[Spyros Seimenis (sespiros)]

The reasoning behind the uaudit -> uaudit.py change was making setting up standalone scanner vms/containers that run uaudit more straight forward and require less custom steps. The change towards that was introduced in this branch:

https://code.launchpad.net/~sespiros/ubuntu-security-tools/+git/ubuntu-security-tools/+ref/add-python-packaging

The pipx method was simply a workaround to make use of the above while at the same time making it easy to run uaudit locally as usual.

This alternative wrapper script also LGTM.

review: Approve

diff --git a/audits/README.md b/audits/README.md
index 5f7a908..186de82 100644
--- a/audits/README.md
+++ b/audits/README.md
@@ -23,7 +23,7 @@ active development.
 
 ## Using `uaudit`
 
-1. Make sure `audits-*`, `check-source-package` and `shellcheck.sh` are in your `PATH`. It is easiest to symlink them into `~/bin`.
+1. Make sure `uaudit`, `audits-*`, `check-source-package` and `shellcheck.sh` are in your `PATH`. It is easiest to symlink them into `~/bin`.
   - Or on latest Ubuntu, you can install uaudit with pipx in editable mode by navigating to ubuntu-security-tools and doing `pipx install -e .`
 2. Read the `uaudit` help: `uaudit --help`
 3. Create a place for your notes and builds (optional):
diff --git a/audits/uaudit b/audits/uaudit
new file mode 100755
index 0000000..f2ba9d3
--- /dev/null
+++ b/audits/uaudit
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+SOURCE=${BASH_SOURCE[0]}
+while [ -L "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+  DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )
+  SOURCE=$(readlink "$SOURCE")
+  [[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+done
+DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && cd .. && pwd )
+PYTHONPATH=$DIR python3 -m audits.uaudit "$@"