linux使用定时任务时发现提示bash: crontab: command not found错误了，出现这个错误是因为没有安装安装 crontab情况居多了，下面我们一看看问题解决办法。
1. 确认crontab是否安装：
执行 crontab 命令如果报 command not found，就表明没有安装
2. 安装 crontab
安装过程如下
[root@10vps ~]# crontab -e
-bash: crontab: command not found
[root@10vps ~]# yum install -y vixie-cron
Loaded plugins: fastestmirror, security
Determining fastest mirrors
* rpmforge:
ftp.riken.jp
base | 3.7 kB 00:00
extras | 3.4 kB 00:00
rpmforge | 1.9 kB 00:00
rpmforge/primary_db | 2.7 MB 00:02
updates | 3.4 kB 00:00
updates/primary_db | 3.2 MB 00:13
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package cronie.x86_64 0:1.4.4-12.el6 will be installed
–> Processing Dependency: dailyjobs for package: cronie-1.4.4-12.el6.x86_64
–> Running transaction check
—> Package cronie-anacron.x86_64 0:1.4.4-12.el6 will be installed
–> Processing Dependency: crontabs for package: cronie-anacron-1.4.4-12.el6.x86_64
–> Running transaction check
—> Package crontabs.noarch 0:1.10-33.el6 will be installed
–> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
cronie x86_64 1.4.4-12.el6 base 73 k
Installing for dependencies:
cronie-anacron x86_64 1.4.4-12.el6 base 30 k
crontabs noarch 1.10-33.el6 base 10 k
Transaction Summary
================================================================================
Install 3 Package(s)
Total download size: 114 k
Installed size: 220 k
Downloading Packages:
(1/3): cronie-1.4.4-12.el6.x86_64.rpm | 73 kB 00:00
(2/3): cronie-anacron-1.4.4-12.el6.x86_64.rpm | 30 kB 00:00
(3/3): crontabs-1.10-33.el6.noarch.rpm | 10 kB 00:00
——————————————————————————–
Total 15 kB/s | 114 kB 00:07
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : cronie-1.4.4-12.el6.x86_64 1/3
Installing : crontabs-1.10-33.el6.noarch 2/3
Installing : cronie-anacron-1.4.4-12.el6.x86_64 3/3
Verifying : crontabs-1.10-33.el6.noarch 1/3
Verifying : cronie-anacron-1.4.4-12.el6.x86_64 2/3
Verifying : cronie-1.4.4-12.el6.x86_64 3/3
Installed:
cronie.x86_64 0:1.4.4-12.el6
Dependency Installed:
cronie-anacron.x86_64 0:1.4.4-12.el6 crontabs.noarch 0:1.10-33.el6
Complete!
[root@10vps ~]# crontab -l
no crontab for root
3. 确认是否安装成功:
代码如下 复制代码
执行 crontab -l
4. 看是否设置了开机自动启动
代码如下 复制代码
chkconfig –list crond
5. 启动crontab
代码如下 复制代码
service crond start
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