crontab

How do I get colored output to a file from a bash script running in crontab?

由 一个人想着一个人 提交于 2019-12-22 12:52:31
问题 When I run a bash script manually, the output appends my log file in the color specified using tput. When I run the bash script as a cronjob, the output loses the color. Thanks. 回答1: Your cron environment almost certainly is just not specifying a terminal type that supports colors and so tput is not returning anything. Compare: $ echo $TERM xterm-256color $ printf %q\\n "$(tput setaf 5)" $'\E[35m' $ printf %q\\n "$(TERM=dumb tput setaf 5)" '' 回答2: I put TERM=xterm export TERM in the bash

Hourly cronjob on Windows

由 偶尔善良 提交于 2019-12-22 11:29:08
问题 I just setup cron on my windows dev system in order to perform an hourly run of a script. I tried to edit crontab in order to run my script hourly, sadly with no success. Could anyone pls. drop me the crontab line which will execute script.xy every hour? 回答1: If you're using Windows, why not use the built-in Scheduled Tasks (Accessories-System Tools)? It may not show up immediately in the Wizard, but it is possible to set up tasks to be run hourly. Just add a daily task and then tick the

Crontab without crontab -e

由 人盡茶涼 提交于 2019-12-22 10:58:27
问题 I would like to add a crontab schedule by doing this in my server: echo "30 * * * * /home/my/var/dir/to/script /var/etc/etc/etc/" > crontab -e Is there a way to do this without going doing crontab -e and then typing in the command? 回答1: Could try 1)nano /etc/crontab (or any other editor, e.g. emacs) 2)echo "30 * * * * /home/my/var/dir/to/script /var/etc/etc/etc/" > /etc/crontab 3)or put the contents of this into a file, then do "file > /etc/crontab" 回答2: like root: echo "30 * * * * /home/my

How to test a cron job?

由 谁说胖子不能爱 提交于 2019-12-22 10:00:03
问题 I'm using Ubuntu Linux 10.0.4. I want to run a script every 6 hours, every day. When I issue sudo crontab -e , I see: # m h dom mon dow command * 00,06,12,18 * * * /opt/scripts/selenium/run_nis_inf_tests.sh However, I'm not seeing the expected outcome from my script, and I'm not even sure if its running. Is there a way to test, short of waiting until the specified time, that the script is running properly. Or, how can I view the errors the script is generating? - Dave 回答1: You can update the

Detect if python script is run from console or by crontab [duplicate]

由 我的梦境 提交于 2019-12-22 02:16:52
问题 This question already has answers here : Checking for interactive shell in a Python script (5 answers) Closed 2 years ago . Imagine a script is running in these 2 sets of "conditions": live action, set up in sudo crontab debug, when I run it from console ./my-script.py What I'd like to achieve is an automatic detection of "debug mode", without me specifying an argument (e.g. --debug ) for the script. Is there a convention about how to do this? Is there a variable that can tell me who the

crontab command not found in my git-bash for windows 7

由 情到浓时终转凉″ 提交于 2019-12-22 00:55:23
问题 I cannot use crontab -e in my git that I installed it in my pc windows 7. It produced the error bash: crontab: command not found Did someone use to do it, please tell me? 回答1: I confirm that even the latest git for windows (2.6.3) with its 4.3.42(3)-bash does not include any cron command. You would need to use another "cron from Windows", like the official Microsoft command Schtasks.exe. 来源： https://stackoverflow.com/questions/33775581/crontab-command-not-found-in-my-git-bash-for-windows-7

Linux cron 配置样例

由 亡梦爱人 提交于 2019-12-22 00:11:39
1.cron 是一个可以用来根据时间、日期、月份、星期的组合来调度对重复任务的执行的守护进程。 cron 假定系统持续运行。如果当某任务被调度时系统不在运行，该任务就不会被执行。 要 使用 cron 服务，你必须安装了 vixie-cron RPM 软件包，而且必须在运行 crond 服务。要判定该软件包是否已安装，使用 rpm -q vixie-cron 命令。要判定该服务是否在运行，使用 /sbin/service crond status 命令。 1.1. 配置 cron 任务 cron 的主配置文件是 /etc/crontab，它包括下面几行： SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly 前 四行是用来配置 cron 任务运行环境的变量。SHELL 变量的值告诉系统要使用哪个 shell 环境（在这个例子里是 bash

linux crontab配置

由 隐身守侯 提交于 2019-12-21 22:17:11
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> cron 是一个可以用来根据时间、日期、月份、星期的组合来调度对重复任务的执行的守护进程。 cron 假定系统持续运行。如果当某任务被调度时系统不在运行，该任务就不会被执行。 要使用 cron 服务，你必须安装了 vixie-cron RPM 软件包，而且必须在运行 crond 服务。要判定该软件包是否已安装，使用 rpm -q vixie-cron 命令。要判定该服务是否在运行，使用 /sbin/service crond status 命令。 37.1.1. 配置 cron 任务 cron 的主配置文件是 /etc/crontab ，它包括下面几行： SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly 前四行是用来配置 cron 任务运行环境的变量。

ubuntu 创建定时备份pg数据库定时任务

由 只愿长相守 提交于 2019-12-21 20:08:28
ubuntu创建定时备份数据库定时任务 一、命令文件 创建db_back.sh #!/bin/bash echo "start backup" /usr/lib/postgresql/10/bin/pg_dump -h 127.0.0.1 -p 5432 -U username -c -f /data/db_backup/demo_$(date "+%Y%m%d_%H_%M_%S").sql dbname echo "backup finished" 二、创建定时任务 　　通过 crontab 命令进行添加定时任务。 输入命令： crontab -e 然后在文件最下面添加： 00 2 1 * * dp_user /home/dp_user/db_backup.sh 三、相关命令 cron是一个Linux定时执行工具，可以在无需人工干预的情况下运行作业。在Ubuntu server 下，cron是被默认安装并启动的。通过/etc/crontab文件进行查看。 ununtu 通过调用 run-parts 命令，定时运行四个目录下的所有脚本。 /etc/cron.hourly，目录下的脚本会每个小时让执行一次，在每小时的2分钟时运行； /etc/cron.daily，目录下的脚本会每天让执行一次，在每天0点17分时运行； /etc/cron.weekly，目录下的脚本会每周让执行一次

Is there a Python module to get next runtime from a crontab-style time definition?

由 烂漫一生 提交于 2019-12-21 17:28:28
问题 I'm writing a dashboard application and I need a way to figure out how long an item is "valid", i.e. when should it have been superseded by a new value (it's possible to have an error such that the next value never arrives). Since I know the schedules for the processes producing data, I can define valid as "until the next time the process should have ran". I thought the crontab format for specifying schedules was very compact (i.e. easy to store in a database), and also easy to understand.
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