new scripts

Author: dhardy

log-memory

@@ -0,0 +1,16 @@
+#!/bin/bash -e
+
+if [ $# -ne 1 ]
+then
+    echo "Error: require log file name"
+    exit 1
+fi
+
+rm $1
+
+while true
+do
+    date | tee -a $1
+    free -wh | tee -a $1
+    sleep 1
+done

pipe-audio

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ "$#" -eq "0" ]; then
+    pacmd unload-module module-loopback
+    pacmd load-module module-loopback latency_msec=5
+elif [ "$1" = "unload" ]; then
+    pacmd unload-module module-loopback
+else
+    echo "Usage: $0"
+    echo "Usage: $0 unload"
+fi

sn550-backup.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Needs to be run with sudo
+if [ "$EUID" -ne 0 ]; then
+    echo "This script needs to be run with sudo or as a root user"
+    exit 1
+fi
+LOCALSNAPSHOTSDIR="/home/SNAPSHOT"
+EXTERNALSNAPSHOTSDIR="/mnt/sn550"
+USER=dhardy
+
+LATEST_HOME=(`ls -d $LOCALSNAPSHOTSDIR/$USER-* | sort | tail -c 11`)
+LATEST_HOME_EXTERNAL=(`ls -d $EXTERNALSNAPSHOTSDIR/$USER-* | sort | tail -c 11`)
+TODAY=`date +%Y-%m-%d`
+
+# make local snapshot
+if test -d "$LOCALSNAPSHOTSDIR"; then
+    echo "Using directory $LOCALSNAPSHOTSDIR for local snapshots."
+    if [[ "$LATEST_HOME" != "$TODAY" ]]; then
+        echo "Today is $TODAY and latest home backup was $LATEST_HOME doing new snapshot"
+        btrfs subvolume snapshot -r /home/$USER $LOCALSNAPSHOTSDIR/$USER-$TODAY
+    else
+        echo "Todays backup already done"
+    fi
+fi
+
+# make an external backup of the snapshot
+# destination drive needs to be formatted as BTRFS !
+if test -d "$EXTERNALSNAPSHOTSDIR"; then
+    echo "using directory $EXTERNALSNAPSHOTSDIR for external backup."
+    if [[ "$LATEST_HOME_EXTERNAL" != "$TODAY" ]]; then
+        echo "Today is $TODAY and latest external backup is $LATEST_HOME_EXTERNAL copying data to external drive"
+        # Update using latest external backup-date as reference to do the differential backup against
+        btrfs send -p $LOCALSNAPSHOTSDIR/$USER-$LATEST_HOME_EXTERNAL $LOCALSNAPSHOTSDIR/$USER-$TODAY | btrfs receive $EXTERNALSNAPSHOTSDIR
+    else
+        if test -f "$EXTERNALSNAPSHOTSDIR/$USER-$TODAY"; then
+            echo "External backup already up to date"
+        else
+            echo "Earlier versions not found, creating the first external backup to $EXTERNALSNAPSHOTSDIR"
+            btrfs send $LOCALSNAPSHOTSDIR/$USER-$TODAY | btrfs receive $EXTERNALSNAPSHOTSDIR
+        fi
+    fi
+else
+    echo "External drive not found, is it mounted?"
+fi