From 375bf66c2c63cc394949fcda04bfac0216b23626 Mon Sep 17 00:00:00 2001
From: alban <git@albancrommer.com>
Date: Tue, 12 May 2020 10:20:41 +0200
Subject: [PATCH] [init]

---
 README.md | 36 ++++++++++++++++++++++++++++++++++++
 changelog | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 README.md
 create mode 100755 changelog

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f1b90e2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,36 @@
+# changelog : manage changes on a server
+
+Based on the Masters Book of Serious Sysadmin's Best Practices Chapter, this script aims at unifying and simplifying the management of changelog files on a server.
+
+## Crash course
+
+```
+wget https://this.repo.srs.ly/alban/changelog/bla/bla/raw/changelog
+chmod +x changelog
+sudo ./changelog
+```
+
+The script will ask for your name if no `CHANGELOG_USERNAME` environment variable is found.
+
+Then it will ask for a first change informations:
+
+* The nature of the change: which software / domain did you change? Why?
+* Some comments: How did you do it? What was happening? Is it fixed?
+
+**Limitations**
+
+* Please note that to enter multiline comments, you have for now to escape newline characters using the `\\\\n` sequence. Ugly. 
+
+* By default, it will attempt to create and edit `/etc/changelog`. You better be running it as root, by default.
+
+
+# Possible improvements
+
+* Enable a sudo requirement / ways to restart oneself as a root user
+* Enable simple multiline comments
+* Provide a way to attach files
+* Provide a way (plugins?) to report each change to a central server
+
+
+
+
diff --git a/changelog b/changelog
new file mode 100755
index 0000000..b8a65c1
--- /dev/null
+++ b/changelog
@@ -0,0 +1,52 @@
+#!/bin/bash
+#Manages an /etc/changelog
+
+CHANGELOG=/etc/changelog
+
+# functions 
+
+msg(){ echo -e "$@"; }
+panic(){ msg "${@} Exiting."; exit 1;}
+template(){ 
+t=$(mktemp)
+cat << HEREDOC >$t
+
+$(date "+%Y-%m-%d %H:%M") $CHANGELOG_USERNAME
+
+$( echo -e "$@"|sed 's/^/    /' )
+HEREDOC
+[[ -f $CHANGELOG ]] && cat /etc/changelog >> $t 
+cat "$t" > $CHANGELOG
+rm -f "$t"
+}
+
+change(){
+  local TMP=$(mktemp)
+  while true ; do
+    echo -e "\nType the nature of the change.\nExample: > mysql: do not start on boot\n"
+    read -e -p "> " SUB
+    echo -e "\nType the comments, how you did that.\nExample: > echo 'manual' | sudo tee -a /etc/init/mysql.override\n"
+    read -e -p "> " EXP
+    echo -e "* $SUB\n$EXP\n" >> $TMP
+    read -e -i "n" -p "More? [yN]:" END
+    [[ "${END^^}" == "N" ]] && break
+  done
+  echo -e "\nHere is the content you are about to add.\n\n$(cat $TMP)\n"
+  read -e -p "OK? [Yn]: " -i y RETURN
+  [[ "N" == ${RETURN^^} ]] && return
+  template "$(cat $TMP)"
+  rm $TMP
+}
+
+# Exec
+echo -e "\nWelcome to Serious Changelogs Inc. Do you have something for me?\n"
+# set environment variables
+[[ -z "$CHANGELOG_USERNAME" ]] && read -e -p "Your name?  " NAME&& read -e -p "Your email? " EMAIL && CHANGELOG_USERNAME="${NAME^}  <$EMAIL>" && echo "export CHANGELOG_USERNAME=\"$CHANGELOG_USERNAME\""
+[[ "  <>" == "$CHANGELOG_USERNAME" ]] && panic "srs.ly?"
+
+# check changelog exists
+[[ ! -f $CHANGELOG ]] && template "* Changelog: Added $CHANGELOG file\nIt was not serious. Fixed!\n\n"
+
+# parse command 
+change
+