diff --git a/backup_sd.sh b/backup_sd.sh
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+#!/bin/bash
+
+# This programm makes a backup of an SD-Card plugged into your
+# machine e.g. for Raspberry Pi. Outputs a gzip file with current
+# date and asked file name e.g.: 2018_05_10_raspberrypi.gz
+#
+# To restore gzip to SD card use:
+# gzip -dc image.gz | sudo dd bs=4M of=/dev/$CARDSLOTNAME
+#
+# Requirements: pv - for progress bar
+#               dd - generating img file
+#               lsblk - grep filesize of sd card
+#               gzip - compression of img
+
+# Find your cardslot name with cmd "lsblk"
+CARDSLOTNAME="sdb"
+CARDSIZE="$(lsblk --bytes | grep -m 1 $CARDSLOTNAME | awk '{print $4}')"
+OUTPUTPATH="/home/$USER/Desktop/"
+
+echo "Please insert file name:"
+read FILENAME
+echo "Writing file to: $OUTPUTPATH`date +%Y_%m_%d_`$FILENAME.gz"
+
+sudo dd bs=4M if=/dev/$CARDSLOTNAME | pv -s $CARDSIZE | gzip > $OUTPUTPATH`date +%Y_%m_%d_`$FILENAME.gz
+
+echo "Syncing disk"
+sync
+echo "Done!"