A way to get an emailable report of all mailboxes in a domain, their quota, usage and account status, so a domain admin can review their accounts without having to login to zimbra. (most of this is the same as viewing quota usage in zimbra admin, but this was easier, as it can then be emailed on a schedule)
I saved this file in /opt/zimbra/backup/scripts/ as usagereport.sh, owned by zimbra.zimbra chmod 755 accountusage.sh
#!/bin/bash
SMTP="10.0.0.2"
FROM="user@yourdomain.com"
TO="user@yourdomain.com"
SUB="Mailbox Usages"
MSG="Mailbox Usages"
output="/tmp/accountusage.csv"
domain="yourdomain.com"
SendTo="user@yourdomain.com"
rm -f $output
touch $output
server=`zmhostname`
/opt/zimbra/bin/zmprov gqu $server|grep $domain|awk {'print $1" "$3" "$2'}|sort|while read line
do
usage=`echo $line|cut -f2 -d " "`
quota=`echo $line|cut -f3 -d " "`
user=`echo $line|cut -f1 -d " "`
#status=`/opt/zimbra/bin/zmprov ga $user | grep ^zimbraAccountStatus | cut -f2 -d " "`
#with status
#echo "$user; `expr $usage / 1024 / 1024`MB; `expr $quota / 1024 / 1024`MB; ($status account)" >> $output
# without status
echo "$user; `expr $usage / 1024 / 1024`MB; `expr $quota / 1024 / 1024`MB" >> $output
done
#cat $output | mail @SendTo -s"Mailbox Usages for $domain"
sendemail -q -o tls=no -f $FROM -t $TO -u $SUB -m $MSG -s $SMTP:25 -a $output
Mostrando postagens com marcador Shell Script. Mostrar todas as postagens
Mostrando postagens com marcador Shell Script. Mostrar todas as postagens
Remove files 30+ days old
#!/bin/bash
# log and delete files 30 days old
FILENAME=FILES_$(date +%Y%m%d%H%M%m).log
find . -mtime +30 -exec echo {} \; > $FILENAME
rm -rfv $(cat $FILENAME)
# log and delete files 30 days old
FILENAME=FILES_$(date +%Y%m%d%H%M%m).log
find . -mtime +30 -exec echo {} \; > $FILENAME
rm -rfv $(cat $FILENAME)
Shell script input trick
In the occasion where you are not sure how long the user input might be and you want to capture it all, you would use
In script run_this.sh:
userInputs=($@)
for i in "${userInputs[@]}";; do
echo "$i"
done
Running the command:
./run_this.sh who knows how long this can go
who
knows
how
long
this
can
go
source: https://medium.freecodecamp.org/functional-and-flexible-shell-scripting-tricks-a2d693be2dd4
$@
instead. In the following example, I took in the entire string and
print it out word by word after breaking them into a string array
according to the spaces in between. In script run_this.sh:
userInputs=($@)
for i in "${userInputs[@]}";; do
echo "$i"
done
Running the command:
./run_this.sh who knows how long this can go
who
knows
how
long
this
can
go
source: https://medium.freecodecamp.org/functional-and-flexible-shell-scripting-tricks-a2d693be2dd4
Remove comments and whitespaces with sed
pico /usr/bin/scrub
# Remove all comments and empty lines
sed -e ‘s/#.*//’ -e ‘s/[ ^I]*$//’ -e ‘/^$/ d’ $1
chmod 755 /usr/bin/scrub
pico /usr/bin/clrspace
# Remove all leading and trailing whitespace from each line;
sed ‘s/^[ t]*//;s/[ t]*$//’ $1
chmod 755 /usr/bin/clrspace
now you can simply run
scrub filename
clrspace filename
# Remove all comments and empty lines
sed -e ‘s/#.*//’ -e ‘s/[ ^I]*$//’ -e ‘/^$/ d’ $1
chmod 755 /usr/bin/scrub
pico /usr/bin/clrspace
# Remove all leading and trailing whitespace from each line;
sed ‘s/^[ t]*//;s/[ t]*$//’ $1
chmod 755 /usr/bin/clrspace
now you can simply run
scrub filename
clrspace filename
Clean up boot partition - Ubuntu
1. Check the current kernel version
$ uname -r
It will shows the list like below:
3.19.0-64-generic
2. Remove the OLD kernels
2.a. List the old kernel
$ sudo dpkg --list 'linux-image*'|awk '{ if ($1=="ii") print $2}'|grep -v `uname -r`
You will get the list of images something like below:
linux-image-3.19.0-59-generic
linux-image-3.19.0-61-generic
linux-image-3.19.0-65-generic
linux-image-extra-3.19.0-58-generic
linux-image-extra-3.19.0-59-generic
linux-image-extra-3.19.0-61-generic
2.b. Now its time to remove old kernel one by one as
$ sudo apt-get purge linux-image-3.19.0-58-generic
$ sudo apt-get purge linux-image-3.19.0-59-generic
$ sudo apt-get purge linux-image-3.19.0-61-generic
$ sudo apt-get purge linux-image-3.19.0-65-generic
When you're done removing the older kernels, you can run this to remove ever packages you won't need anymore:
$ sudo apt-get autoremove
Send desktop notification from shell scripts
Install packages
sudo apt-get install libnotify-bin
send some notification
notify-send "rsnapshot done :)"
#another example
...
alert=18000
live=$(lynx --dump http://money.rediff.com/ | grep 'BSE LIVE' | awk '{ print $5}' | sed 's/,//g;s/\.[0-9]*//g')
[ $notify_counter -eq 0 ] && [ $live -ge $alert ] && { notify-send -t 5000 -u low -i "BSE Sensex touched 18k"; notify_counter=1; }
...
-t 5000: Specifies the timeout in milliseconds ( 5000 milliseconds = 5 seconds)
-u low : Set the urgency level (i.e. low, normal, or critical).
-i gtk-dialog-info : Set an icon filename or stock icon to display (you can set path as -i /path/to/your-icon.png).
A Note About GUI Tools and Cronjob
You need to request local display/input service using export DISPLAY=[user’s machine]:0 command if you are using cronjob to call your scripts. For example, call /home/vivek/scripts/monitor.stock.sh as follows which uses zenity tool:
@hourly DISPLAY=:0.0 /home/vivek/scripts/monitor.stock.sh
sudo apt-get install libnotify-bin
send some notification
notify-send "rsnapshot done :)"
#another example
...
alert=18000
live=$(lynx --dump http://money.rediff.com/ | grep 'BSE LIVE' | awk '{ print $5}' | sed 's/,//g;s/\.[0-9]*//g')
[ $notify_counter -eq 0 ] && [ $live -ge $alert ] && { notify-send -t 5000 -u low -i "BSE Sensex touched 18k"; notify_counter=1; }
...
-t 5000: Specifies the timeout in milliseconds ( 5000 milliseconds = 5 seconds)
-u low : Set the urgency level (i.e. low, normal, or critical).
-i gtk-dialog-info : Set an icon filename or stock icon to display (you can set path as -i /path/to/your-icon.png).
A Note About GUI Tools and Cronjob
You need to request local display/input service using export DISPLAY=[user’s machine]:0 command if you are using cronjob to call your scripts. For example, call /home/vivek/scripts/monitor.stock.sh as follows which uses zenity tool:
@hourly DISPLAY=:0.0 /home/vivek/scripts/monitor.stock.sh
convert single line output to multiple line
$ips="10.26.208.28 10.26.208.26 10.26.208.27"
echo $ips | tr -s " " "\n"
or
echo $ips|xargs -n1
result
10.26.208.28
10.26.208.26
10.26.208.27
echo $ips | tr -s " " "\n"
or
echo $ips|xargs -n1
result
10.26.208.28
10.26.208.26
10.26.208.27
Remove blank lines with grep
Remove blank lines ( new line ) with grep
echo -e "a\n\nb" | grep -v '^ *$'
or
grep -v '^[\s\t]*$' file.txt > new_file.txt
Include Shell Script
Include Shell Script
File in same directory
source $( dirname $0 )/include-functions.sh
File in same directory
source $( dirname $0 )/include-functions.sh
Manipulate dates with linux
Current formatted date
date +%d-%m-%Y
Current formatted date with time
date '+%d-%m-%Y %H:%M:%S'
1 day before the current date
date -d '-1 day' +%d-%m-%Y
1 day after the current date
date -d '+1 day' +%d-%m-%Y
First day of current month
date -d '-0 month' +01-%m-%Y
Last day of current month
date -d "-$(date +%d) days +1 month" +%d-%m-%Y
Last day of current month + one day
date -d "-$(date +%d) days +1 month +1 day" +%d-%m-%Y
First day of the previous month
date -d '-1 month' +01-%m-%Y
Last day of the previous month
date -d "-$(date +%d) days -0 month" +%d-%m-%Y
First day of the next month
date -d '+1 month' +01-%m-%Y
Last day of the next month
date -d "-$(date +%d) days +2 month" +%d-%m-%Y
Date format style /var/log/messages ( Aug 25 19:15:20 )
date '+%b %d %R:%S'
Comment line with sed
comment line starting with abc
sed -i '/^abc.*/s/^/#/' file
comment all lines in the file
sed -i '/^/s/^/#/' file
comment line starting with abc and append a comment on end of line
sed '/^abc.*/s/^/# /; //s/$/ comment/' file
sed -i '/^abc.*/s/^/#/' file
comment all lines in the file
sed -i '/^/s/^/#/' file
comment line starting with abc and append a comment on end of line
sed '/^abc.*/s/^/# /; //s/$/ comment/' file
Loop for shell script
loop for shell script
loop 1 until 10
for i in {1..10}; do echo $i; done
list all files in directory
for i in /etc/*; do echo $i; done
loop 1 until 10
for i in {1..10}; do echo $i; done
list all files in directory
for i in /etc/*; do echo $i; done
Replace char/word in shell script
substitute whitespace by commas to generate csv output
echo a b c | tr -s ' ' ','
Bandwidth control script for some ips
#!/bin/bash
BANDWIDTH_KBIT=7000
BANDWIDTH_INTERFACE=eth0
FINAL_IPs_WITH_BANDWIDTH_CONTROL=(7 8 50 111)
LAN_IP=$( ip addr show $BANDWIDTH_INTERFACE | grep -Eo '([0-9]{1,3}\.){3}' | sed -n 1p )
# clear all tc rules
tc qdisc del dev $BANDWIDTH_INTERFACE root
# create tc rules
tc qdisc add dev $BANDWIDTH_INTERFACE root handle 1: htb
for i in ${FINAL_IPs_WITH_BANDWIDTH_CONTROL[*]}; do
tc class add dev $BANDWIDTH_INTERFACE classid 1:${i} htb rate ${BANDWIDTH_KBIT}kbit
tc filter add dev $BANDWIDTH_INTERFACE parent 1: protocol ip prio 1 u32 match ip dst $LAN_IP${i} flowid 1:${i}
done
to list only machines that have traffic
tc -s -d class show dev eth0 | awk '$1 == "Sent" && $2 { print "\n"x; print } { x=$0 }'
to list only machines that have traffic order by traffic usage
tc -s -d class show dev eth0 | awk 'BEGIN{ ORS=" " } $1 == "Sent" && $2 { print "\n"x; print } { x=$0 }' | cut -d' ' -f1,3,9,10,29,30 | sort -k6n
Reboot machine if it can’t ping
#!/bin/bash
# reboot if ping test fails for 3 times
unset IVAR
for i in {1..3}; do
ping -c 1 8.8.8.8 > /dev/null || ((IVAR++))
done
if [ "$IVAR" == 3 ]; then
echo '[' $( date '+%d/%m/%Y %R' ) '] reboot' | tee -a /var/log/$( basename $0 ).log
/sbin/init 6
fi
# reboot if ping test fails for 3 times
unset IVAR
for i in {1..3}; do
ping -c 1 8.8.8.8 > /dev/null || ((IVAR++))
done
if [ "$IVAR" == 3 ]; then
echo '[' $( date '+%d/%m/%Y %R' ) '] reboot' | tee -a /var/log/$( basename $0 ).log
/sbin/init 6
fi
Block IP's by countries
#!/bin/bash
# block countries with iptables based on list with range of ips
# download list with range of countries ips
rm -rf /tmp/all-zones*; wget -nc http://www.ipdeny.com/ipblocks/data/countries/all-zones.tar.gz -P /tmp
mkdir /tmp/all-zones; tar -xzvf /tmp/all-zones.tar.gz -C $_
COUNTRIES_ISO_CODE_LIST=(af cu mo)
for country_iso_code in ${COUNTRIES_ISO_CODE_LIST[*]}; do
for country_ip in $( cat /tmp/all-zones/$country_iso_code.zone ); do
echo creating rules to $country_iso_code $country_ip
/sbin/iptables -A INPUT -s $country_ip -m comment --comment "rule to $( echo $country_iso_code | tr '[:lower:]' '[:upper:]' ) country" -j DROP
done
done
Creating columns bash
create 1 column
seq 10
create 2 columns
printf %s\\n ID-{1..3}' '{10..25..5}
create 3 or more columns
seq 12 | pr -3t | column -t
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