shellcheck fixes (#2)

backupnaz.sh

@@ -1,19 +1,40 @@
-#!/bin/bash
+#!/bin/sh
 # Monthly backup script for my NAS
 
-DEVICE=`readlink -f /dev/disk/by-id/usb-ST3000DM_001-1CH166_000000000000-0:0-part1`
+#set -e
 
-if grep $DEVICE /proc/mounts >/dev/null
+DEVICE=/dev/sdb1
+
+pass backups/disk | sudo /sbin/cryptsetup luksOpen $DEVICE backups "$@"
+
+if grep /dev/mapper/backups /proc/mounts >/dev/null
 then
 	echo "external drive ($DEVICE) seems to be mounted. good."
 else
-	if sudo mount $DEVICE /mnt/usb/
+	if sudo mount /dev/mapper/backups /mnt/backups/
 	then 
-		echo "external drive ($DEVICE) successfuly mounted."
+		echo " * external drive ($DEVICE) successfuly mounted."
 	else
-		echo "FATAL: unable to mount"
+		echo " * FATAL: unable to mount"
 		exit 1
 	fi 
 fi
 
-time ionice -c 2 sudo rsync --info=progress2 -av --delete --exclude-from /root/.backup_excludes naz:/mnt/md1/ /mnt/usb/
+for slot in public private
+do
+	echo
+	echo " * backing up $slot"
+	echo
+	time ionice -c 2 rsync --rsh='ssh -q -o RemoteCommand=none' --info=progress2 -av --delete --exclude-from ~/.backup_excludes naz:/nfs/$slot/ /mnt/backups/$slot/
+done
+
+echo
+echo " * unmounting"
+echo
+
+sleep 2
+sync
+
+sudo umount /dev/mapper/backups
+sudo dmsetup remove /dev/mapper/backups
+

bootstraponline.sh

@@ -1,3 +1,5 @@
+#!/bin/sh
+
 gpart destroy -F ada0
 gpart create -s gpt ada0
 gpart add -s 222 -a 4k -t freebsd-boot -l boot0 ada0

cleanmaildir.sh

@@ -12,13 +12,13 @@
 # and maxdays is the maximum number of days before a message is deleted
 #
 # put it in the user's crontab:
-# 50 * * * * /path/to/cleanmaildir.sh
+# 50 * * * * /path/to/cleanmaildir
 
-etcfile=/etc/cleanmaildir.conf
+etcfile=/usr/local/etc/cleanmaildir.conf
 
-for i in `cat $etcfile`
+grep -v '^#' < $etcfile | while IFS= read -r i
 do
-	dir=`echo $i | cut -f 1 -d ,`
+        dir=$(echo "$i" | cut -f 1 -d ,)
-	time=`echo $i | cut -f 2 -d ,`
+        time=$(echo "$i" | cut -f 2 -d ,)
-	find ~/Maildir/$dir/cur/* -mtime +`expr $time - 1` -exec rm '{}' \;
+        find "$HOME/Maildir/$dir/cur/" -type f -mtime +$(( time - 1)) -exec rm '{}' \;
 done

dodo.sh

@@ -1 +1,3 @@
+#!/bin/sh
+
 xset dpms force off

dump_mysql.sh

@@ -1,20 +1,20 @@
 #!/bin/sh
 
-BACKUPDIR=/home/mysql_backup
+BACKUPDIR=/home/backups/mysql
 LOGFILE=${BACKUPDIR}/my_dump_mysql.log
-SENDNSCA=/usr/local/sbin/send_nsca\ -H\ <nagios_host>\ -d\ ';;'\ -c\ /usr/local/etc/nagios/send_nsca.cfg
+SENDZABBIX="zabbix_sender --config /usr/local/etc/zabbix6/zabbix_agentd.conf --key mysql.backups"
-HOSTNAME=`/bin/hostname -f | /usr/bin/cut -d '.' -f 1,2`
+HOSTNAME=$(hostname -f | cut -d '.' -f 1,2)
 backup_success=1
 
 mkdir -p ${BACKUPDIR}
 rm -f ${LOGFILE};
 
-for i in `echo 'show databases;' | mysql | grep -v Database`;
+for i in $(mysql --skip-column-names --silent --raw --execute 'show databases;' | grep --invert-match Database);
 do
-  echo -n " ---> backing up ${i}..." >> ${LOGFILE}
+  printf " ---> backing up %s..." "$i" >> ${LOGFILE}
   mysqldump --add-drop-table --add-locks --create-options --disable-keys --extended-insert --single-transaction\
-    --databases --lock-tables --quick --set-charset $i > ${BACKUPDIR}/$i.sql 2>> ${LOGFILE};
+    --databases --lock-tables --quick --set-charset "$i" | lbzip2 > "$BACKUPDIR/$i.sql.bz2" 2>> ${LOGFILE};
-  if [ $? -eq 0 ];
+  if [ $? ];
   then
     echo " OK" >> ${LOGFILE};
   else
@@ -24,7 +24,7 @@ done
 
 if [ $backup_success -eq 1 ]
 then
-        echo "${HOSTNAME};;mysql_backups;;0;OK - backup succeeded at `date`" | ${SENDNSCA} >/dev/null
+	${SENDZABBIX} --value 0 >/dev/null
 else
-        echo "${HOSTNAME};;mysql_backups;;2;CRITICAL - backup failed at `date`, please check ${LOGFILE} for complete report." | ${SENDNSCA} >/dev/null
+	${SENDZABBIX} --value 1 >/dev/null
 fi

dump_postgresql.sh

@@ -2,19 +2,19 @@
 
 BACKUPDIR=/home/backups/postgresql
 LOGFILE=${BACKUPDIR}/my_dump_postgresql.log
-SENDNSCA=/usr/local/sbin/send_nsca\ -H\ <nagios_host>\ -d\ ';;'\ -c\ /usr/local/etc/nagios/send_nsca.cfg
+SENDZABBIX="zabbix_sender --config /usr/local/etc/zabbix6/zabbix_agentd.conf --key pgsql.backups"
-HOSTNAME=`/bin/hostname -f | /usr/bin/cut -d '.' -f 1,2`
+HOSTNAME=$(/bin/hostname -f | /usr/bin/cut -d '.' -f 1,2)
 backup_success=1
 
 mkdir -p ${BACKUPDIR}
 rm -f ${LOGFILE}
-cd ${BACKUPDIR}
+cd ${BACKUPDIR} || backup_success=0
 echo "start" >> ${LOGFILE}
-for i in `psql --list --tuples-only --port 6432 | grep -v template0 | grep -v template1 | cut -f 2 -d " " | sed '/^$/d' | tr "\n" " "`;
+for i in $(psql --list --tuples-only --port 6432 | grep -v template0 | grep -v template1 | cut -f 2 -d " " | sed '/^$/d' | tr "\n" " ");
 do
-  echo -n " ---> backing up ${i}..." >> ${LOGFILE}
+  printf " ---> backing up %s..." "$i" >> ${LOGFILE}
-  pg_dump --port 5432 ${i} > ${i}.sql && rm -f ${i}.sql.bz2 && bzip2 ${i}.sql >> ${LOGFILE};
+  pg_dump --port 6432 --format c "${i}" > "${i}".dump 2>> ${LOGFILE} 2>&1;
-  if [ $? -eq 0 ];
+  if [ $? ];
   then
     echo " OK" >> ${LOGFILE};
   else
@@ -24,8 +24,8 @@ done
 
 if [ $backup_success -eq 1 ]
 then
-        echo "${HOSTNAME};;postgresql_backups;;0;OK - backup succeeded at `date`" | ${SENDNSCA} >/dev/null
+	${SENDZABBIX} --value 0 >/dev/null
 else
-        echo "${HOSTNAME};;postgresql_backups;;2;CRITICAL - backup failed at `date`, please check ${LOGFILE} for complete report." | ${SENDNSCA} >/dev/null
+	${SENDZABBIX} --value 1 >/dev/null
 fi
 echo "end" >> ${LOGFILE}

pivotroot.sh

@@ -45,16 +45,18 @@ cp -vrp /etc/* ${CHROOTDIR}/etc/
 chmod g+w ${CHROOTDIR}/run 
 
 echo "" > ${CHROOTDIR}/root/.bash_history
-echo "TERM=xterm-16color" >>${CHROOTDIR}/root/.profile #necessary for tmux/screen to work
+{
-echo "alias halt=\"echo 'o' > /proc/sysrq-trigger\"" >>${CHROOTDIR}/root/.profile 
+  echo "TERM=xterm-16color" #necessary for tmux/screen to work
-echo "alias reboot=\"echo 'b' > /proc/sysrq-trigger\"" >>${CHROOTDIR}/root/.profile 
+  echo "alias halt=\"echo 'o' > /proc/sysrq-trigger\"" 
+  echo "alias reboot=\"echo 'b' > /proc/sysrq-trigger\"" 
+} >> ${CHROOTDIR}/root/.profile 
 
 pivot_root ${CHROOTDIR} ${CHROOTDIR}/oldroot
 /sbin/dropbear -p ${CHROOTPORT}
 
 echo
 echo "system pivot-rooted."
-echo "you can now connect with ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p ${CHROOTPORT} root@`hostname`, launch screen/tmux and shred"
+echo "you can now connect with ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p ${CHROOTPORT} root@$(hostname), launch screen/tmux and shred"
 echo "and finaly use reboot or halt commands (warning: they are not the real thing...)"
 echo
 echo "happy wiping!"

randomwallpaper.sh

@@ -1,10 +1,9 @@
-#!/bin/bash
+#!/bin/sh
 
-#export DISPLAY=:0.0
 echo "DISPLAY:$DISPLAY"
 
-Dir="~/img/wallpap/1920x1200/"
+Dir="/home/n/img/wallpap/2560x1440/"
-wallpaplist="~/.wallpaplist"
+wallpaplist="/home/n/.cache/wallpaplist"
 contact="n@tourmentine.com"
 
 if [ ! -d "$Dir" ];
@@ -19,47 +18,41 @@ then
 fi
 
 while true; do
-AvailableFiles=`ls -1 ${Dir} | wc -l`
+AvailableFiles=$(find ${Dir} | wc -l)
-AlreadyViewedFiles=`cat ${wallpaplist} | wc -l`
+AlreadyViewedFiles=$(cat ${wallpaplist} | wc -l)
 
-TotalFiles=`expr $AvailableFiles - $AlreadyViewedFiles`
+TotalFiles=$((AvailableFiles-AlreadyViewedFiles))
 
-if [ $TotalFiles -lt 1 ];
+if [ "$TotalFiles" -lt 1 ];
 then
         echo "*** Seems we have displayed all available wallpapers; let's do the time warp...again. ***"
-        echo ""> ${wallpaplist}
+        printf ""> ${wallpaplist}
 	echo "" | /usr/bin/mail -s "Seems we have displayed all available wallpapers; let's do the time warp...again." ${contact}
         TotalFiles=$AvailableFiles
 fi
 
-RandomNumber=$(( $RANDOM % $TotalFiles ))
+RandomNumber=$(shuf --input-range=1-"$TotalFiles" --head-count=1)
-test ! $RandomNumber = 0 || RandomNumber=1
+test ! "$RandomNumber" = 0 || RandomNumber=1
 
-RandomFile="$( ls -1 ${Dir} | grep -w -v -F -f ${wallpaplist} | head -n $RandomNumber | tail -n 1)"
+RandomFile="$(find ${Dir} -type f -printf '%f\n' | sort | grep -w -v -F -f ${wallpaplist} | head -n "$RandomNumber" | tail -n 1)"
-if [[ ${RandomFile} == "" ]];
+if [ "${RandomFile}" = "" ];
 then
         echo "*** Oops, something went wrong. erasing cache for security ***"
-        echo ""> ${wallpaplist}
+        printf ""> ${wallpaplist}
 	echo "" | /usr/bin/mail -s "Oops, something went wrong. erasing cache for security" ${contact}
         exit 1
 else
         echo "${RandomFile}" >> ${wallpaplist}
 fi
 
-if [ -z "${DBUS_SESSION_BUS_ADDRESS}" ] ; then
+export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
-        . ${HOME}/.dbus/session-bus/`ls -rt ${HOME}/.dbus/session-bus/ | tail -1`
-        export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
-fi
 
-#echo ${DBUS_SESSION_BUS_ADDRESS}
+AlreadyViewedFiles=$(cat ${wallpaplist} | wc -l)
-
+echo "" | /usr/bin/mail -s "New wallpaper: ${RandomFile} (${AlreadyViewedFiles}/${AvailableFiles})" ${contact}
-echo "" | /usr/bin/mail -s "New wallpaper: ${RandomFile}" ${contact}
+echo "Selected File: $RandomFile, which is the ${AlreadyViewedFiles}th out of ${AvailableFiles}"
-echo "Selected File: $RandomFile"
+for workspace in 1 2 3 4
-xfconf-query -c xfce4-desktop -p /backdrop/screen0/monitor0/image-path -s "${Dir%/}/${RandomFile}"
+do
-xfconf-query -c xfce4-desktop -v -p /backdrop/screen0/monitor0/last-image -s "${Dir%/}/${RandomFile}"
+  xfconf-query -c xfce4-desktop -p /backdrop/screen0/monitorDisplayPort-${workspace}/workspace0/last-image -s "${Dir%/}/${RandomFile}" 2>/dev/null
-xfconf-query -c xfce4-desktop -v -p /backdrop/screen0/monitorVGA1/workspace0/last-image -s "${Dir%/}/${RandomFile}"
+done
-xfconf-query -c xfce4-desktop -v -p /backdrop/screen0/monitor0/workspace0/last-image -s "${Dir%/}/${RandomFile}"
+sleep 3h
-pkill gkrellm && gkrellm &
-# 3 hours
-sleep 10800
 done

superscreen

@@ -16,20 +16,20 @@ then
 fi
 
 # main screen (physical host)
-screen -d -m -S $session -t `hostname -s`
+screen -d -m -S "$session" -t "$(hostname -s)"
 
 # servers' screens : open a ssh connexion from the host to them, then rename it
 for server in $servers
 do
    window=$(( window + 1 ))
-   screen -S $session -X screen ssh $server
+   screen -S "$session" -X screen ssh "$server"
-   screen -S $session -p $window -X title $server
+   screen -S "$session" -p "$window" -X title "$server"
 done
 
 # do not attach screen if "-d" option is set
-if [ ! -z "$1" ]
+if [ -n "$1" ]
 then
-   if [ $1 == "-d" ]
+   if [ "$1" = "-d" ]
    then
       exit 0
    fi

supertmux

@@ -1,28 +1,25 @@
 #!/bin/sh
+
 # supertmux: open a tmux session with ssh connections to some servers
 
-session=`hostname -s`
+session=$(hostname -s)
 servers="db dns ftp mail web"
 
 tmux kill-server
 tmux start-server
 
-tmux new-session -d -s $session;
+tmux new-session -d -s "$session";
-tmux rename-window $session 
+tmux rename-window hv 
-
-tmux set-option status-style fg=white,bg=black
-tmux set-option -g status-right "[%D %H:%M]"
-tmux set-option -g status-justify centre
 
 counter=1
 for server in $servers
 do
-	tmux new-window -t $session:$counter 
+	tmux new-window -t "$session":"$counter" 
-	tmux select-window -t $session:$counter
+	tmux select-window -t "$session":"$counter"
-	tmux rename-window $server
+	tmux rename-window "$server"
-	tmux send -t $session:$counter "ssh $server" ENTER
+	tmux send -t "$session":"$counter" "ssh $server" ENTER
-	let counter=$counter+1 >/dev/null
+	counter=$(( counter + 1 ))
 done
 
-tmux select-window -t $session:0
+tmux select-window -t "$session":0
-tmux attach-session -t $session
+tmux attach-session -t "$session"

zfsync.sh

@@ -8,52 +8,49 @@
 #
 # or manually:
 #
-# - destroy all snapshots on both local & ${bro}
+# - destroy all snapshots on both local & $bro
 # - for i in ftp web mail; do zfs snapshot servers/$i/home@newsync ;done
-# - for i in ftp web mail; do zfs send servers/$i/home@newsync | ssh ${bro} zfs receive -vFd servers ;done
+# - for i in ftp web mail; do zfs send servers/$i/home@newsync | ssh "$bro" zfs receive -vFd servers ;done
 # - for i in ftp web mail; do zfs rename servers/$i/home@newsync servers/$i/home@prevsync ;done
-# - ssh ${bro} 'for i in ftp web mail; do zfs rename servers/$i/home@newsync servers/$i/home@prevsync ;done'
+# - ssh "$bro" 'for i in ftp web mail; do zfs rename servers/$i/home@newsync servers/$i/home@prevsync ;done'
 
 
-bro="small"
+bro="{{ bro }}"
 pools="ftp mail web"
 
-SENDNSCA=/usr/local/sbin/send_nsca\ -H\ 192.168.X.X\ -d\ ';;'\ -c\ /usr/local/etc/nagios/send_nsca.cfg
+SENDZABBIX="zabbix_sender --config /usr/local/etc/zabbix6/zabbix_agentd.conf --key check.zfsync"
-HOSTNAME=`/bin/hostname -f | /usr/bin/cut -d '.' -f 1,1`
+HOSTNAME=$(/bin/hostname -f | /usr/bin/cut -d '.' -f 1,1)
-SERVICENAME=zfsync
-LOGFILE=/tmp/zfsync.log
 LOCKFILE=/tmp/zfsync.lock
 ZROOT=zdata/servers
-sync_success=1
 
-echo "`date`: ZFSync starting."
+echo "$(date): ZFSync starting."
-if [ -e $LOCKFILE ]
+if [ -e "$LOCKFILE" ]
 then
-	echo "ERROR: $0 is already running with pid `cat $LOCKFILE`, check $LOCKFILE"
+	echo "ERROR: $0 is already running with pid $(cat $LOCKFILE), check $LOCKFILE"
 	exit 1
 fi
 echo ${$}>$LOCKFILE
 
 alert()
 {
-	echo "${HOSTNAME};;${SERVICENAME};;2;CRITICAL - ZFS Sync failed at `date`, please check ${LOGFILE} for complete report." | ${SENDNSCA} >/dev/null
+	${SENDZABBIX} --value 1 >/dev/null
 	exit $?
 }
 
-if [ $1 ]
+if [ "$1" ]
 then
-if [ $1 = "init" ]
+if [ "$1" = "init" ]
 then
 	echo "wiping previous syncs"
-	for snapshot in `zfs list -t snapshot -o name | grep -e prevsync -e newsync`; do zfs destroy $snapshot ; done
+	for snapshot in $(zfs list -t snapshot -o name | grep -e prevsync -e newsync); do zfs destroy "$snapshot" ; done
-	ssh -q ${bro} 'for snapshot in `zfs list -t snapshot -o name | grep -e prevsync -e newsync`; do zfs destroy $snapshot ; done'
+	ssh -q "$bro" 'for snapshot in $(zfs list -t snapshot -o name | grep -e prevsync -e newsync); do zfs destroy $snapshot ; done'
 	echo "making full snapshots"
-	for jail in $pools; do zfs snapshot $ZROOT/$jail/home@newsync;done
+	for jail in $pools; do zfs snapshot "$ZROOT/$jail/home@newsync";done
 	echo "sending full snapshots"
-	for jail in $pools; do zfs send $ZROOT/$jail/home@newsync | ssh -q ${bro} 'zfs receive -vFdu zdata' ;done
+	for jail in $pools; do zfs send "$ZROOT/$jail/home@newsync" | ssh -q "$bro" 'zfs receive -vFdu zdata' ;done
 	echo "renaming them to use them as a base for diff snapshots"
-	for jail in $pools; do zfs rename $ZROOT/$jail/home@newsync $ZROOT/$jail/home@prevsync ;done
+	for jail in $pools; do zfs rename "$ZROOT/$jail/home@newsync" "$ZROOT/$jail/home@prevsync" ;done
-	ssh -q ${bro} 'for jail in ftp mail web; do zfs rename zdata/servers/$jail/home@newsync zdata/servers/$jail/home@prevsync ;done'
+	ssh -q "$bro" 'for jail in ftp mail web; do zfs rename zdata/servers/$jail/home@newsync zdata/servers/$jail/home@prevsync ;done'
 	exit $?
 fi
 fi
@@ -62,20 +59,20 @@ for pool in $pools
 do
 	dataset="$ZROOT/${pool}/home"
 	echo "making new snapshot for ${pool}"
-	zfs snapshot ${dataset}@newsync || alert
+	zfs snapshot "${dataset}@newsync" || alert
 	echo "sending snapshot"
-        ssh -q ${bro} "zfs set readonly=on ${dataset}" || alert
+	ssh -q "$bro" "zfs set readonly=on ${dataset}" || alert
-        sleep 2
+	sleep 2
-	zfs send -i @prevsync ${dataset}@newsync | ssh -q ${bro} "zfs receive -vFdu zdata" || alert
+	zfs send -i @prevsync "${dataset}@newsync" | ssh -q "$bro" "zfs receive -vFdu zdata" || alert
-        ssh -q ${bro} "zfs set readonly=off ${dataset}" || alert
+	ssh -q "$bro" "zfs set readonly=off ${dataset}" || alert
 	echo "cleaning"
-	zfs destroy ${dataset}@prevsync || alert
+	zfs destroy "${dataset}@prevsync" || alert
-	zfs rename ${dataset}@newsync ${dataset}@prevsync || alert
+	zfs rename "${dataset}@newsync" "${dataset}@prevsync" || alert
-	ssh -q ${bro} "zfs destroy ${dataset}@prevsync && zfs rename ${dataset}@newsync ${dataset}@prevsync" || alert
+	ssh -q "$bro" "zfs destroy ${dataset}@prevsync && zfs rename ${dataset}@newsync ${dataset}@prevsync" || alert
 done
 
 echo
-echo "${HOSTNAME};;${SERVICENAME};;0;OK - ZFS Sync succeeded at `date`" | ${SENDNSCA} >/dev/null
+${SENDZABBIX} --value 0 >/dev/null
 
 rm -f $LOCKFILE
-echo "`date`: ZFSync ending."
+echo "$(date): ZFSync ending."