Fix cronjobs to use BASH for RANDOM variable.

Reviewed-on: #6

files/scripts/backup_system.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+## Variables ##
+
+if [[ -z "$HOSTNAME" ]]; then
+	echo "*** Pulling Hostname From Command ***"
+	export HOSTNAME="`hostname`"
+fi
+if [[ -z "$HOSTNAME" ]]; then
+	echo "*** Pulling Hostname From /etc/ File ***"
+	export HOSTNAME="`cat /etc/hostname`"
+fi
+
+EXTRA="$1"
+TAG="System"
+DATE="`date "+%Y%m%d-%H%M%S"`"
+BACKUP_DIR="/srv/backup"
+BASENAME="Backup"
+BACKUP="$BACKUP_DIR/$BASENAME.$DATE.$HOSTNAME.$TAG.zip"
+
+## Initialization ##
+
+echo "*** Creating Backup Directory ***"
+sudo mkdir -pv "$BACKUP_DIR"
+sudo mkdir -pv "$BACKUP_DIR/TRASH"
+sudo chmod -Rv 775 "$BACKUP_DIR"
+sudo chown -Rv root:root "$BACKUP_DIR"
+
+## Cleanup ##
+
+echo "*** Removing Old Backups ***"
+cd "$BACKUP_DIR"
+sudo mv -v "$BASENAME"*"$TAG"* TRASH/
+sudo rm -v TRASH/*
+
+## Main
+
+echo "*** Creating backup at '$BACKUP' ***"
+sudo zip -rv "$BACKUP" \
+	/etc /var/{log,mail,spool} /srv /boot \
+	/usr/local/etc $EXTRA \
+	-x "/srv/backup/*"
+status="$?"
+
+if [[ "$status" != 0 ]]; then
+	echo "*** ERROR: Failed to create '$BACKUP', file may be incorrect. ***"
+fi
+
+if [[ -e "$BACKUP" ]]; then
+	ls -alh "$BACKUP"
+	echo "*** '$BACKUP' created successfully! ***"
+else
+	echo "*** '$BACKUP' not found! ***"
+	exit 1
+fi
+
+exit 0

tasks/general/acct_mgmt/users.yml

@@ -415,6 +415,7 @@
       function clean() {
         clean-trash
         clean-code
+        clean-backups
       }
     function_flatpak_usage: |
       function flatpak-usage() {
@@ -563,6 +564,16 @@
           echo -e "\n*** `basename $project` ***"
           cd $project
           if [[ -d .git ]]; then
+            git ls-remote --exit-code --heads origin dev
+            dev_exists="$?"
+            if [[ "$dev_exists" == 0 ]]; then
+              git switch dev
+            elif [[ "$dev_exists" == 2 ]]; then
+              git switch main
+            else
+              echo "ERROR: Unknown status for dev_exists, '$dev_exists'."
+              continue
+            fi
             git pull
             git push
           else
@@ -767,6 +778,7 @@
     alias_ls: |
       alias l='ls'
       alias ll='ls -alh'
+      alias lh='ls -ash'
     alias_progs: |
       alias progs='ps -ef'
     alias_nethogs: |
@@ -782,27 +794,15 @@
       }
     function_backup: |
       function backup {
-        EXTRA="$1"
+        /usr/local/bin/backup_system.sh
-        TAG="System"
-        BASENAME="/tmp/Backup"
-        BACKUP="$BASENAME.`now`.$HOSTNAME.$TAG.zip"
-        echo "*** Removing Old Backups ***"
-        sh -c 'rm -fv "$BASENAME"*"$TAG"*'
-        echo "*** Creating backup at '$BACKUP' ***"
-        sudo zip -rv "$BACKUP" \
-          /etc /var/{log,mail,spool} /srv /boot \
-          /usr/local/etc $EXTRA
-        status="$?"
-        if [[ "$status" != 0 ]]; then
-          echo "*** ERROR: Failed to create '$BACKUP', file may be incorrect. ***"
-        fi
-        if [[ -e "$BACKUP" ]]; then
-          ls -alh "$BACKUP"
-          echo "*** '$BACKUP' created successfully! ***"
-        else
-          echo "*** '$BACKUP' not found! ***"
-        fi
       }
+      alias backup-system="backup"
+      alias system-backup="backup"
+      alias check-backups="ll /srv/backup"
+      function clean-backup {
+        sh -c "rm -rfv /srv/backup/*"
+      }
+      alias clean-backups="clean-backup"
     function_log: |
       function log {
         echo -e "$1"
@@ -888,6 +888,71 @@
       }
       alias ebooks="ebook-convert"
       alias convert="ebook-convert"
+    alias_sudo: |
+      # Allows for alias expansions when using sudo, such as doing "sudo ll".
+      alias sudo="sudo "
+    function_load_branch: |
+      # Change a branch to point at another.
+      function load-branch {
+        rcvr="$1" # branch which we want to modify
+        base="$2" # branch with the changes we want
+
+        if [[ "$rcvr" == "main" ]]; then
+          echo "*** ERROR: Are you nuts, fool!? Not main! Do it manually! ***"
+          exit 1
+        fi
+
+        if [[ -z "$base" ]]; then
+          if [[ "$rcvr" == "prod" ]]; then
+            base="stage"
+          elif [[ "$rcvr" == "stage" ]]; then
+            base="dev"
+          else
+            echo "* Unsure which branch to use for '$rcvr'. Please specify."
+            exit 1
+          fi
+          echo "* Base was not specified, using '$base' for '$rcvr'."
+        else
+          echo "* Requested pointing '$rcvr' branch to '$base'."
+        fi
+
+        echo -e "\n* Ensuring we are on base branch '$base'." &&
+        git switch "$base" &&
+        echo -e "\n* Changing pointer for '$rcvr' to '$base'." &&
+        git branch -f "$rcvr" "$base" &&
+        #echo -e "\n* Switching to branch '$rcvr'." &&
+        #git switch "$rcvr" &&
+        echo -e "\n* Forcing push on branch '$rcvr'." &&
+        git push --force --set-upstream origin "$rcvr" &&
+        echo -e "\n* Done! Displaying list of remote branches." &&
+        git ls-remote --heads | sort
+
+        if [[ "$base" != "dev" ]]; then
+          echo -e "\n* Checking if a dev branch exists."
+          git ls-remote --exit-code --heads origin dev
+          dev_exists="$?"
+          if [[ "$dev_exists" == 0 ]]; then
+            echo -e "\n* Switching back to dev."
+            git switch dev
+          elif [[ "$dev_exists" == 2 ]]; then
+            echo -e "\n* Switching back to main."
+            git switch main
+          else
+            echo "*** ERROR: Unknown status for dev_exists, '$dev_exists'. ***"
+          fi
+        fi
+
+        echo -e "\n* Verifying which branch we're on."
+        git branch
+      }
+      alias load-prod="load-branch prod"
+      alias load-stage="load-branch stage"
+      alias rollback-prod="load-branch prod main"
+      alias rollback-stage="load-branch stage prod"
+      alias rollback-dev="load-branch dev stage"
+      alias reset-prod="load-branch prod main"
+      alias reset-stage="load-branch stage main"
+      alias reset-dev="load-branch dev main"
 
 - name: General | Account Management | Users | Files | Common Variable
   set_fact:
@@ -962,6 +1027,8 @@
       {{ function_log }}
       {{ function_debian_upgrade }}
       {{ function_ebook_convert }}
+      {{ alias_sudo }}
+      {{ function_load_branch }}
 
 - name: General | Account Management | Users | Files | .bashrc
   blockinfile:

tasks/general/cron/ansible.yml

@@ -1,12 +1,18 @@
 ---
 # Jobs relating to the ansible user.
 
+# $RANDOM is anywhere from 0 to 32767 in BASH. This would be up to ~9 hours.
+# $RANDOM /  10 can be up to about 3200 seconds, or ~55 minutes.
+# $RANDOM /  20 can be up to about 1600 seconds, or ~27 minutes.
+# $RANDOM /  50 can be up to about  650 seconds, or ~11 minutes.
+# $RANDOM / 100 can be up to about  320 seconds, or  ~5 minutes.
+# This prevents multiple systems from hitting it at the exact same time.
 - name: General | Cron | Ansible | Create Subscriber Job
   cron:
     user: ansible
     name: "Ansible Sync"
     minute: "*/30"
-    job: "sudo {{ ansible_pull_exec.stdout }} -v -o -U {{ git_repo_http }} --checkout {{ branch }}"
+    job: "bash -c 'sleep $(( $RANDOM / 20 )); sudo {{ ansible_pull_exec.stdout }} -v -o -U {{ git_repo_http }} --checkout {{ branch }}'"
     state: present
     disabled: "{{ 'yes' if no_telem else 'no' }}"
 
@@ -14,7 +20,7 @@
   cron:
     user: ansible
     name: "Ansible Weekly Forced Sync"
-    special_time: weekly
+    special_time: daily
-    job: "{{ user_root.home }}/bin/scm.sh"
+    job: "bash -c 'sleep $(( $RANDOM /  1 )); sudo {{ ansible_pull_exec.stdout }} -v    -U {{ git_repo_http }} --checkout {{ branch }}'"
     state: present
     disabled: "{{ 'yes' if no_telem else 'no' }}"