crontab

I have this line in crontab: * * * * * /var/www/dir/sh/mysql_dumb.sh | mail -s "mysql_dump" example@mail.com (every minute only a sample) So, all works fine, but the email is empty. UPDATE: The output from mysql_dumb.sh is a *.sql file and they save the file in a directory. How can I send a copy (*.sql file) from this output -> mysql_dumb.sh to my email? mysql_dumb.sh: #!/bin/bash PATH=/usr/bin:/bin SHELL=/bin/bash /usr/bin/mysqldump -u USER -pPASS DATABASE > /var/www/dir/backup/backup_DB_`date +%d_%m_%Y`.sql Barmar If the script is reporting errors, they may be going to stderr , but you're

I'm learning node.js and just set up an empty Linux Virtual Machine and installed node. I'm running a function constantly every minute var request = require('request') var minutes = 1, the_interval = minutes * 60 * 1000 setInterval(function() { // Run code }) }, the_interval); And considering adding some other functions based on current time. - (e.g. run function if dateTime = Sunday at noon) My question is are there any disadvantages to running a set up like this compared to a traditional cron job set up? Keep in mind I have to run this function in node every minute anyways. It depends on how

Source Wikipedia: Question mark (?) is used instead of '*' for leaving either day-of-month or day-of-week blank. The above statement is not making much sense to me. So if I write some cron as 0 0 0 ? * * then does it mean first of every month or it means it will execute daily? It is a bit confusing as Java crons start with seconds while other crons start with minute. I am not Cron expert But according www.cronmaker.com it is executed daily. Dan King According to the Quartz CronTrigger tutorial (Quartz is used by www.cronmaker.com, referenced above), the ? wildcard is only used in the day of

I want to execute my scrapy crawler from cron job . i create bash file getdata.sh where scrapy project is located with it's spiders #!/bin/bash cd /myfolder/crawlers/ scrapy crawl my_spider_name My crontab looks like this , I want to execute it in every 5 minute */5 * * * * sh /myfolder/crawlers/getdata.sh but it don't works , whats wrong , where is my error ? when I execute my bash file from terminal sh /myfolder/crawlers/getdata.sh it works fine I solved this problem including PATH into bash file #!/bin/bash cd /myfolder/crawlers/ PATH=$PATH:/usr/local/bin export PATH scrapy crawl my_spider

1.　Crontab定时任务 　　　Crontab 基本语法 　　t1 t2 t3 t4 t5 program 其中 t1 是表示分钟，t2 表示小时，t3 表示一个月份中的第几日，t4 表示月份，t5 表示一个星期中的第几天。program 表示要执行的程序。 当 t1 为 * 时表示每分钟都要执行 program，t2 为 * 时表示每小时都要执行程序，其馀类推 当 t1 为 a-b 时表示从第 a 分钟到第 b 分钟这段时间内要执行，t2 为 a-b 时表示从第 a 到第 b 小时都要执行，其馀类推 当 t1 为 */n 时表示每 n 分钟个时间间隔执行一次，t2 为 */n 表示每 n 小时个时间间隔执行一次，其馀类推 当 t1 为 a, b, c,... 时表示第 a, b, c,... 分钟要执行，t2 为 a, b, c,... 时表示第 a, b, c...个小时要执行，其馀类推 2.　Tomcat日志清理脚本 　　Tomcat日志随着项目运行时长越来越多，访问量大时很可能撑满硬盘。下面贴一个自用的Tomcat日志清理脚本。 1 #!/bin/sh 2 3 #日志文件所在目录 4 #path=/usr/local/tomcat/apache-tomcat-8.5.32/logs 5 path=/usr/local/tomcat/apache-tomcat-8.5

1，crond定时任务是Linux系统支持可扩展的一种自动执行命令或者脚本的功能 1，yum provides crond(查看命令包源） 2，系统定时任务目录文件 crond.hourly ------------系统定时任务每小时运行这个目录文件 crond.daily -------------系统定时任务每天运行这个目录文件 crond.weekly -------------系统定时任务每周运行这个目录文件 crond.monthly -----------系统定时任务每月运行这个目录文件 cond.deny ----------------系统禁止某些用户使用定时任务 crontab -------------------定时任务配置文件 2. crontab -l 查看当前定时任务列表 crontab -e 编辑定时任务 /var/spool/cron/root root用户写的定时任务会在这个目录下自动生成root定时任务文件 /var/spool/cron/普通用户名 普通用户写的定时任务会在这个目录下自动生成普通用户名定时任务文件 systemctl status crond systemctl start/stop crond /var/log/cron 定时任务日志记录 3.vi/etc/crontab 全局生效 分 时 日 月 周 30 8

I am running next command within a crontab to encrypt a file and I don't want a keyboard interaction echo "PASSPHRASE" | gpg --passphrase-fd 0 -r USER --encrypt FILENAME.TXT but I have this answer: gpg: C042XXXX: There is no assurance this key belongs to the named user pub 40XXX/C042XXXX 2012-01-11 Name LastName. (comment) <user@email.com> Primary key fingerprint: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX Subkey fingerprint: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX It is NOT certain that the key belongs to the person named in the user ID. If you *really* know what you are

I tried to run a cron job inside a docker container but nothing works for me my container have only cron.daily and cron.weekly file crontab,cron.d,cron.hourly ... are absent in my container crontab -e also not working my container runs with /bin/bash Here is how I run one of my cron containers. Dockerfile: FROM alpine:3.3 ADD crontab.txt /crontab.txt ADD script.sh /script.sh COPY entry.sh /entry.sh RUN chmod 755 /script.sh /entry.sh RUN /usr/bin/crontab /crontab.txt CMD ["/entry.sh"] crontab.txt */30 * * * * /script.sh >> /var/log/script.log entry.sh #!/bin/sh # start cron /usr/sbin/crond -f