I've made a little bash script to backup my nextcloud files including my database from my ubuntu 18.04 server. I want the backup to be executed every day. When the job is done I want to reseive one mail if the job was done (additional if it was sucessful or not). With the current script I reseive almost 20 mails and I can't figure out why. Any ideas?
My cronjob looks like this:
* 17 * * * "/root/backup/"backup.sh >/dev/null 2>&1
My bash script
#!/usr/bin/env bash
LOG="/user/backup/backup.log"
exec > >(tee -i ${LOG})
exec 2>&1
cd /var/www/nextcloud
sudo -u www-data php occ maintenance:mode --on
mysqldump --single-transaction -h localhost -u db_user --password='PASSWORD' nextcloud_db > /BACKUP/DB/NextcloudDB_`date +"%Y%m%d"`.sql
cd /BACKUP/DB
ls -t | tail -n +4 | xargs -r rm --
rsync -avx --delete /var/www/nextcloud/ /BACKUP/nextcloud_install/
rsync -avx --delete --exclude 'backup' /var/nextcloud_data/ /BACKUP/nextcloud_data/
cd /var/www/nextcloud
sudo -u www-data php occ maintenance:mode --off
echo "###### Finished backup on $(date) ######"
mail -s "BACKUP" name#domain.com < ${LOG}
Are you sure about the CRON string? For me this means "At every minute past hour 17".
Should be more like 0 17 * * *, right?
Related
I have multiple sites and all this sites have cache plugin. I want to set crontab to all my these sites to clear cache. But I don't know how to do it with cron.
I use this code for only 1 site :
wget -O - "https://domain1/?action=wpfastestcache&type=clearcache&token=ABCD" >/dev/null 2>&1
So there are these sample sites, too :
https://domain1/?action=wpfastestcache&type=clearcache&token=ABCD
https://domain2/?action=wpfastestcache&type=clearcache&token=ABCD
https://domain3/?action=wpfastestcache&type=clearcache&token=ABCD
...
I don't want to set multiple cron for each site. I want to do it for all sites with 1 cron.
You can write a bash script to clear cache for all this sites from a single file
vim cache-clear.sh
#!/bin/bash
wget -O - "https://domain1/?action=wpfastestcache&type=clearcache&token=ABCD" >/dev/null 2>&1
wget -O - "https://domain2/?action=wpfastestcache&type=clearcache&token=ABCD" >/dev/null 2>&1
wget -O - "https://domain3?action=wpfastestcache&type=clearcache&token=ABCD" >/dev/null 2>&1
Then run this bash script from crontab , suppose you want to clear cache every 10 minutes
crontab -e ---> to edit crontab
*/10 * * * * bash cache-clear.sh >/dev/null 2>&1
Run this script from crontab every 10th minute by adding above command in crontab
I am not a linux expert and I have a problem I do not manage to solve. I am sorry if it is obvious.
I am trying to execute a bash script in a cron table on a raspberry pi, and I don't manage to get it work.
Here is the example script I want to execute:
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
plouf=$( ps -aux | grep reviews | wc -l)
if [[ "$plouf" == 1 ]] ;
then
echo "plouf" >> /home/pi/Documents/french_pain/crontest.txt
fi
My script in the cron consist in starting a script if there is no progam with review in its name running. To test I am just appending "plouf" to a file. I count the number of line of ps -aux | grep reviews | wc -l , and if there in only one line I do append "plouf" in a file.
Here is my crontab:
crontab -l
SHELL=/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
* * * * * sudo /home/pi/Documents/french_pain/script2.sh
The script do work when I do ./ script2.sh or /home/pi/Documents/french_pain/script2.sh directly in terminl: it add a "plouf" to the file.
I came across this page and tried different possibilities, by setting my path as the path given by env, and by explicitly setting the shell in the cron. But still not working.
What I am I doing wrong ?
To answer Mark Setchell comment:
raspberrypi:~/Documents/french_pain $ sudo /home/pi/Documents/french_pain/script2.sh
raspberrypi:~/Documents/french_pain $ cat crontest.txt
plouf
and cron is running:
raspberrypi:~/Documents/french_pain $ pgrep cron
353
I manage to do simple jobs like
* * * * * /bin/echo "cron works" >> /tmp/file
I tried with the direct path to the commands:
plouf=$( /bin/ps -aux | /bin/grep 'R CMD.*reviews' | usr/bin/wc -l)
if [[ "$plouf" == 1 ]] ;
then
/bin/echo "plouf" >> /home/pi/Documents/french_pain/crontest.txt
fi
without any luck. The permission for the file:
-rw-rw-rw- 1 root root 6 juil. 3 23:30 crontest.txt
I tried deleting it, and did not work either.
help !
I guess you trying this as "pi" user then 'sudo' won't work unless you have allowed nopasswd:all or using a command that is able to handle the password that Sudo requires from stdin in this case. The example below is dangerous since it will not require any password for sudo command anymore but since you wanted to use sudo in cronie:
Example 1:
With default /etc/sudoers below example will create an empty file:
* * * * * sudo ls / > ~/cronietest.txt
Try add below in /etc/sudoers at bottom (obs: do not use pi as username on a rpi):
pi ALL=(ALL) NOPASSWD:ALL
Now try again to add below in crontab
* * * * * sudo ls / > ~/cronietest.txt
It works!
Example 2:
This is more safe, add this to sudoers file for allow 'command' for "pi" user without any password when sudo is executed:
pi ALL= NOPASSWD: /bin/<command>
Example 3:
Without editing sudoers file, this is another example that will work (this is dangerous since your password is stored in cron file as plaintext)
* * * * * echo "password" | sudo -S ls / > ~/cronietest.txt
I did not find the reason why the sript was not working, but I finally found a way to make it work thanks to this post: I used shell script instead of bash:
The file script3.sh
#!/bin/sh
if ps -ef | grep -v grep | grep 'reviews'; then
exit 0
else
echo "plouf" >> /home/pi/Documents/french_pain/crontest.txt
fi
together with
* * * * * /home/pi/Documents/french_pain/script3.sh
in my crontab did the work I wanted.
I am trying cron job for the first time. I am trying to generate file which will contain user installed application in Ubuntu and the same file needs to be uploaded to server.
I am unable to generate the text file with that information. Below is the command which i am trying.
Script file which needs to be run for the cron job /tmp/aptlist.sh
#!/bin/bash
comm -23 <(apt-mark showmanual | sort -u) <(gzip -dc /var/log/installer/initial-status.gz | sed -n 's/^Package: //p' | sort -u) &> /tmp/$(hostname)-$(date +%d-%m-%Y-%S)
cron has following entry done using crontab -e
:~$ crontab -l
0 0 1 * * /tmp/aptlist.sh > /dev/null 2>&1
syslog has following entry however no file is generated
Oct 21 14:09:01 Astrome46 CRON[14592]: (user) CMD (/tmp/aptlist.sh > /dev/null 2>&1)
Oct 21 14:10:01 Astrome46 CRON[14600]: (user) CMD (/tmp/aptlist.sh > /dev/null 2>&1)
Kindly let me know how to fix the issue.
Thank You
Try this:
0 0 1 * * bash /tmp/aptlist.sh > /dev/null 2>&1
If this works then I suspect it is because the file doesn't have executable permissions.
You can find that out by typing in the terminal:
ls -l /tmp/aptlist.sh.
If that is really the case then you can also edit the file permissions to allow it to run by typing:
chmod u+x /tmp/aptlist.sh
This will enable the file owner to run it, but will not allow that to other users. If you need it to run for a different user do:
chmod a+x /tmp/aptlist.sh
Good luck!
I have strange issue: wher i run bash script via su user /path/script.sh all work fine, but when same script running via cron, it's use all free memory and make down both servers (from and to) plus ignoring --bwlimit (i see it in control pannel of VDS).
in cron:
* 10 * * * gituser /path/script.sh
my sciprt:
#!/bin/bash
cd /backup
now=$(date +"%Y_%m_%d")
#mysql
mysqldump --all-databases > "$now.sql"
sshpass -p 'pass' rsync --bwlimit=5000 -rz "$now.sql"
sftpuser#ip:/backup/"$now.sql"
#rm -f "$now.sql"
#for test archive
> /home/bitrix/www/testscript
echo "$now" > /path/testscript
#site files
tar cf "$now.tar" /path/. --exclude=/path/./upload --exclude=/path/./wp-content --ignore-failed-read
split --bytes=500MB "$now.tar" "$now.tar.part"
sshpass -p 'pass' rsync --bwlimit=5000 -rz "$now.tar.part"* sftpuser#ip:/backup/
#rm -f "$now.tar"
#upload files
sshpass -p 'pass' rsync --bwlimit=5000 -rz /path/upload/ sftpuser#ip:/backup/upload/
sshpass -p 'pass' rsync --bwlimit=5000 -rz /path/ sftpuser#ip:/backup/wp-content/
toruble was in cron time (* in minutes so its start every new minut)
Hello i have a script like this one:
#!/usr/bin/bash
ARSIP=/apps/bea/scripts/arsip
CURDIR=/apps/bea/scripts
OUTDIR=/apps/bea/scripts/out
DIRLOG=/apps/bea/jboss-6.0.0/server/default/log
LISTFILE=$CURDIR/tmp/file.$$
DATE=`perl -e 'use POSIX; print strftime "%Y-%m-%d", localtime time-86400;'`
JAVACMD=/apps/bea/jdk1.6.0_26/bin/sparcv9/java
HR=00
for (( c=0; c<24; c++ ))
do
echo $DATE $HR
$JAVACMD -jar LatencyCounter.jar LatencyCounter.xml $DATE $HR
sleep 1
cd $OUTDIR
mv btw_120-180.txt btw_120-180-$DATE-$HR.txt
mv btw_180-360.txt btw_180-360-$DATE-$HR.txt
mv btw_60-120.txt btw_60-120-$DATE-$HR.txt
mv failed_to_deliver.txt failed_to_deliver-$DATE-$HR.txt
mv gt_360.txt gt_360-$DATE-$HR.txt
mv out.log out-$DATE-$HR.log
cd -
let HR=10#$HR+1
HR=$(printf %02d $HR);
done
cd $OUTDIR
tar -cf latency-$DATE.tar btw*-$DATE-*.txt gt*$DATE*.txt out-$DATE-*.log
sleep 300
gzip latency-$DATE.tar
sleep 300
/apps/bea/scripts/summaryLatency.sh
sleep 300
rm -f btw* failed* gt* out*
#mv latency-$DATE.tar.gz ../$ARSIP
cd -
It basically execute jar files in same directory as this script and then tar the result, gzip it and execute another bash file then delete all of the previous collected files. The problem is i need this script to run daily and i use crontab to do that. It still return empty tar file but if i execute it manually it works well..I also have other 4 scripts running in crontab and they work good..i still can't figure out what is the main reason of this phenomena
thank you
I'll take a stab: your script is run by /bin/sh instead of /bin/bash.
Try explicitly running it with bash at the cron entry, like this:
* * * * * /bin/bash /your/script
I'm guessing that when you execute $JAVACMD -jar LatencyCounter.jar LatencyCounter.xml $DATE $HR, you're not in the directory containing LatencyCounter.jar. You might want to cd $CURDIR before you enter the for loop.