CentOS 中使用yum时常见的一种提示信息

人盡茶涼 提交于 2019-12-14 21:33:01
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 相信你也遇到过类似的情况,当你安装centos系统的虚拟机有一段时间没有用的时候,再次使用yum去安装一些工具的时候会提示: Repodata is over 2 weeks old(镜像源过期)。 提示信息中往往还会有如下内容:Install yum-cron? Or run: yum makecache fast(设置定时任务计划或者执行命令yum makecache fast) 其目的是更新本地yum源缓存,但是当你使用的镜像源对应的地址无法访问的时候,又会提示如下信息:

Daily XML's download to webserver from fixed external URL's

大兔子大兔子 提交于 2019-12-14 04:23:20
问题 I have multiple URL's which each points to a XML file, though it takes a few minutes pointing to URL manually and waiting for each XML to be collected and saved to desktop. Therefor I am looking for a script that could automatically visit the URL's (one by one) at night and download each XML to a

psql: error while loading shared libraries: cannot open shared object file: No such file or directory

拈花ヽ惹草 提交于 2019-12-14 04:09:56
问题 I have the psql path in my path variable. crontab path is usr:/usr/bin:/bin I add all the user directories and then execute the cron job. Default PATH for usr:/usr/bin:/bin user is:gpadmin PATH for usr:/usr/bin:/bin:/usr/local/greenplum-db/./bin:/usr/local/greenplum-db/./ext/python/bin:/home

Laravel requires the Mcrypt PHP extension. Not working for cron jobs

纵饮孤独 提交于 2019-12-14 04:07:33
问题 So I am plagued with this issue like many others have been but with no solution. The Issue : commands issued by a cron task do not run and give the message: Laravel requires the Mcrypt PHP extension. I can run commands through artisan and they work fine. I am using MAMP on OSX 10.8. I've

PHP function to increment variable by 1 each time script is executed

别说谁变了你拦得住时间么 提交于 2019-12-13 22:22:14
问题 Is it possible to increment a variable or array by 1 each time the script is executed. An example would be, I execute the script and it sets a variable to $increment = '1'; I then close the script and come back 30 min later to execute the script again. This time the variable needs to be

random cron job

无人久伴 提交于 2019-12-13 21:29:20
问题 I need a script1 that will execute script2 at random times a day. I'm looking to execute the script2 around 30 times a day within random times. script1 will be set in the cron job. Could someone please help how to make it happen? PS I am not a programmer, so would need something ready to go,

Telnet fails to run properly when run from daemon process

倾然丶 夕夏残阳落幕 提交于 2019-12-13 19:26:30
问题 When I call telnet to connect to daytime server from interactive shell, it works fine. However, when the same telnet call is issued from a shell script run by cron or some bash daemon process, it fails to yield any otput. I straced the both calls, and here they are: Successful one: execve("/usr