Made destination dir modular
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README.md
20
README.md
@ -13,7 +13,7 @@ $> sudo make install
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This will copy `backup.sh` into `/usr/local/bin/backup.sh`, `backup_sources.bk` into `/usr/local/etc/backup_sources.bk` and
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`backup.sh.1` into `/usr/local/share/man/man1`.
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At this point you still need to install the dependencies:
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At this point you still need to install the following dependencies:
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- `rsync`
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- `tar`
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- `openssl`
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@ -25,7 +25,7 @@ backup.sh - POSIX compliant, modular and lightweight backup utility.
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Syntax: ./backup.sh [-b|-e|-h]
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options:
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-b|--backup SOURCES USER PASS Backup folders from SOURCES file.
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-b|--backup SOURCES DEST PASS Backup folders from SOURCES file.
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-e|--extract ARCHIVE PASS Extract ARCHIVE using PASS.
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-h|--help Show this helper.
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```
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@ -34,7 +34,7 @@ As you can see, `backup.sh` supports two options: **backup creation** and **arch
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root permissions, while the latter does not. Let us see them in details.
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### Backup creation
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To specify the directories to backup, `backup.sh` uses an associative array called
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To specify the directories to backup, `backup.sh` uses an associative array
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defined in a text file(called _sources file_) with the following syntax:
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```text
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@ -42,7 +42,7 @@ defined in a text file(called _sources file_) with the following syntax:
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```
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Where `<LABEL>` is the name of the backup and `<PATH>` is its path. For example,
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if you want you back up `/etc/nginx` and `/etc/ssh`, add the following entries to the _sources file_:
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if you want to back up `/etc/nginx` and `/etc/ssh`, add the following entries to the _sources file_:
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```text
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nginx=/etc/nginx/
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@ -70,15 +70,15 @@ You can find a sample _sources file_ at `backup_sources.bk`(or at `/usr/local/et
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After having defined the _sources file_, you can invoke `backup.sh` using the following syntax:
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```sh
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$> sudo ./backup.sh --backup <SOURCES_FILE> <USER> <ENCRYPTION_PASSWORD>
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$> sudo ./backup.sh --backup <SOURCES_FILE> <DEST> <ENCRYPTION_PASSWORD>
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```
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Where `<SOURCES_FILE>` is the _sources file_, `<USER>` is the home directory where you want the final backup
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and `<ENCRYPTION_PASSWORD>` is the password to encrypt the compressed archive.
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Where `<SOURCES_FILE>` is the _sources file_, `<DEST>` is the absolute path of the output of the backup
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**without trailing slashes** and `<ENCRYPTION_PASSWORD>` is the password to encrypt the compressed archive.
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In the previous example, this would be:
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```sh
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$> sudo ./backup.sh --backup sources.bk john badpw1234
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$> sudo ./backup.sh --backup sources.bk /home/john badpw1234
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```
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The backup utility will begin to copy the files defined in the _sources file_:
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@ -94,7 +94,7 @@ After that, you will find the final backup archive in `/home/john/backup-<HOSTNA
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You can also use `backup.sh` from a crontab rule:
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```sh
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$> sudo crontab -e
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30 03 * * 6 EKEY=$(cat /home/john/.ekey) /usr/local/bin/backup.sh -b /usr/local/etc/sources.bk john $EKEY
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30 03 * * 6 EKEY=$(cat /home/john/.ekey) /usr/local/bin/backup.sh -b /usr/local/etc/sources.bk /home/john $EKEY
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```
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@ -109,7 +109,7 @@ adopt this practice while using the `--extract` option to avoid password leaking
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$> ./backup.sh --extract <ENCRYPTED_ARCHIVE> <ARCHIVE_PASSWORD>
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```
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where `<ENCRYPTED_ARCHIVE>` is the encrypted backup and `<ARCHIVE_PASSWORD>` is the backup password.
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Where `<ENCRYPTED_ARCHIVE>` is the encrypted backup and `<ARCHIVE_PASSWORD>` is the backup password.
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For instance:
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24
backup.sh
24
backup.sh
@ -1,5 +1,4 @@
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#!/bin/bash
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# backup.sh - Backup and encrypt your files.
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# backup.sh is a POSIX compliant, modular and lightweight
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# backup utility to save and encrypt your files.
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#
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@ -14,7 +13,7 @@
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# logs=/var/log/
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#
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# After that you can launch the script with(sample usage):
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# sudo ./backup.sh --backup sources.bk john badpw1234
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# sudo ./backup.sh --backup sources.bk /home/john badpw1234
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#
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# This will create an encrypted tar archive(password: 'badpw1234')
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# in '/home/john/backup-<hostname>-<YYYMMDD>.tar.gz.enc' containing
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@ -48,12 +47,12 @@ fi
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make_backup() {
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BACKUP_SH_SOURCES_PATH="$1"
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BACKUP_SH_USER="$2"
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BACKUP_SH_OUTPATH="$2"
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BACKUP_SH_PASS="$3"
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BACKUP_SH_COMMAND="rsync -aPhvrq --delete"
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BACKUP_SH_DATE="$(date +'%Y%m%d')"
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BACKUP_SH_FOLDER="backup.sh.tmp"
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BACKUP_SH_OUTPUT="/home/$BACKUP_SH_USER/$BACKUP_SH_FOLDER"
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BACKUP_SH_OUTPUT="$BACKUP_SH_OUTPATH/$BACKUP_SH_FOLDER"
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BACKUP_SH_START_TIME="$(date +%s)"
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declare -A BACKUP_SH_SOURCES
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@ -94,9 +93,9 @@ make_backup() {
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# Compress and encrypt backup directory
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echo "Compressing and encrypting backup..."
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tar -cz -C /home/"$BACKUP_SH_USER" $BACKUP_SH_FOLDER | \
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tar -cz -C $BACKUP_SH_OUTPATH $BACKUP_SH_FOLDER | \
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openssl enc -aes-256-cbc -md sha512 -pbkdf2 -iter 100000 -salt -k "$BACKUP_SH_PASS" \
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> /home/"$BACKUP_SH_USER"/"backup-$(uname -n)-$BACKUP_SH_DATE.tar.gz.enc"
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> $BACKUP_SH_OUTPATH/"backup-$(uname -n)-$BACKUP_SH_DATE.tar.gz.enc"
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# Remove temporary files
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rm -rf "$BACKUP_SH_OUTPUT"
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@ -123,9 +122,12 @@ backup.sh - POSIX compliant, modular and lightweight backup utility.
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Syntax: $CLI_NAME [-b|-e|-h]
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options:
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-b|--backup SOURCES USER PASS Backup folders from SOURCES file.
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-b|--backup SOURCES DEST PASS Backup folders from SOURCES file.
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-e|--extract ARCHIVE PASS Extract ARCHIVE using PASS.
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-h|--help Show this helper.
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General help with the software: https://github.com/ice-bit/backup.sh
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Report bugs to: Marco Cetica(<email@marcocetica.com>)
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EOF
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}
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@ -141,15 +143,15 @@ while [ $# -gt 0 ]; do
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case $1 in
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-b|--backup)
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BACKUP_SH_SOURCES_PATH="$2"
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BACKUP_SH_USER="$3"
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BACKUP_SH_OUTPATH="$3"
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BACKUP_SH_PASSWORD="$4"
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if [ -z "$BACKUP_SH_SOURCES_PATH" ] || [ -z "$BACKUP_SH_USER" ] || [ -z "$BACKUP_SH_PASSWORD" ]; then
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echo "Please, specify a source file, a user and a password."
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if [ -z "$BACKUP_SH_SOURCES_PATH" ] || [ -z "$BACKUP_SH_OUTPATH" ] || [ -z "$BACKUP_SH_PASSWORD" ]; then
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echo "Please, specify a source file, an output path and a password."
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echo "For more informatio, try --help"
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exit 1
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fi
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make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_USER" "$BACKUP_SH_PASSWORD"
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make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD"
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exit 0
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;;
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-e|--extract)
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