centos7釋出到現在有4年多了，公司項目也被迫需要全部更新到centos7，畢竟網際網路項目就是不斷的在更新再更新，升到不能升為止！哈哈~~
看看下面的centos釋出時間，是不是感覺跟你孩子的年齡一樣，對了，忘了還有單身的朋友！
| 版本 | 平台 | RHEL 版本 | 釋出日期 | RHEL 釋出日期 |
| 2 | i386 | 2.1 | 2004.05.14 | 2002.05.17 |
| 3.1 | i386,x86_64,ia64,s390,s390x | 3 | 2004.03.19 | 2003.10.23 |
| 3.4 - Server CD | i386,x86_64,ia64,s390,s390x | 3.4 | 2005.01.23 | - |
| 3.7 | i386,x86_64,ia64,s390,s390x | 3.7 | 2006.04.11 | - |
| 3.8 | i386,x86_64 | 3.8 | 2006.08.25 | 2006.07.20 |
| 3.9 | i386,x86_64,ia64,s390,s390x | 3.9 | 2007.07.26 | 2007.06.15 |
| 4.0 | i386,x86_64,various | 4 | 2005.03.09 | 2005.02.14 |
| 4.6 | i386,x86_64,ia64,alpha,s390,s390x,ppc (beta),sparc (beta) | 4.6 | 2007.12.16 | 2007.11.16 |
| 4.7 | i386,x86_64,ia64,alpha,s390,s390x | 4.7 | 2008.09.13 | 2008.07.24 |
| 4.7 - Server CD | i386,x86_64,ia64,alpha,s390,s390x | 4.7 | 2008.10.17 | - |
| 4.8 | i386,x86-64,ia64,alpha,s390,s390x | 4.8 | 2009.08.21 | 2009.05.18 |
| 4.9 | i386,x86-64,ia64,alpha,s390,s390x | 4.9 | 2011.03.02 | 2011.02.16 |
| 5.0 | i386,x86_64 | 5 | 2007.04.12 | 2007.03.14 |
| 5.1 | i386,x86_64 | 5.1 | 2007.12.02 | 2007.11.07 |
| 5.1 - LiveCD | i386 | 5.1 | 2008.02.18 | - |
| 5.2 | i386,x86_64 | 5.2 | 2008.06.24 | 2008.05.21 |
| 5.2 - LiveCD | i386 | 5.2 | 2008.07.17 | - |
| 5.3 | i386,x86_64 | 5.3 | 2009.03.31 | 2009.01.20 |
| 5.3 - Live CD | i386 | 5.3 | 2009.05.27 | - |
| 5.4 | i386,x86_64 | 5.4 | 2009.10.21 | 2009.09.02 |
| 5.5 | i386,x86_64 | 5.5 | 2010.05.14 | 2010.03.31 |
| 5.5 - LiveCD | i386,x86-64 | 5.5 | 2010.05.14 | - |
| 5.6 | i386,x86-64 | 5.6 | 2011.04.07 | 2011.01.13 |
| 5.7 | i386,x86-64 | 5.7 | 2011.09.14 | - |
| 5.8 | i386,x86-64 | 5.8 | 2012.03.07 | |
| 5.9 | i386,x86-64 | 5.9 | 2013.01.17 | 2013.01.07 |
| 5.10 [3] | i386,x86-64 | 5.10 | 2013.10.19 | 2013.10.01 |
| 5.11 | i386,x86-64 | 5.11 | 2014.09.30 | 2014.09.16 |
| 6.0 | i386,x86-64 | 6 | 2011.07.04 | 2010-11-10 |
| 6.1 | i386,x86-64 | 6.1 | 2011.12.10 | 2011-05-19 |
| 6.2 | i386,x86-64 | 6.2 | 2011.12.20 | 2011-12-06 |
| 6.3 | i386,x86-64 | 6.3 | 2012.07.10 | 2012.06.21 |
| 6.4 | i386,x86-64 | 6.4 | 2013.03.08 | 2013.02.21 |
| 6.5 [4] | i386,x86_64 | 6.5 | 2013.12.01 | 2013.11.21 |
| 6.6 | i386,x86_64 | 6.6 | 2014.10.27 | 2014.10.28 |
| 7.0 [2] | x86_64,armv7hl | 7.0 | 2014.07.07 | 2014.06.11 |
| 7.1 | x86_64 | 7.1 | 2015.03.31 | 2015.03.05 |
| 7.2 | x86_64 | 7.2 | 2015.12.15 | 2015.12.15 |
| 7.3 | x86_64 | 7.3 | 2016.12.12 | 2016.11.03 |
| 7.4 | x86_64 | 7.4 | 2017.09.13 | 2017.08.01 |
[[email protected] ~]# uname -a
Linux mcuhome.us-west-1.compute.internal 3.10.0-514.16.1.el7.x86_64 #1 SMP Wed Apr 12 15:04:24 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
首先看一下/etc/rc.local檔案内容
[[email protected] logs]# more /etc/rc.local
#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.
touch /var/lock/subsys/local
/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
注意“Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure”
[[email protected] ~]# ll /etc/rc.local
lrwxrwxrwx. 1 root root 13 5月 2 2017 /etc/rc.local -> rc.d/rc.local
您在 /var/spool/mail/root 中有新郵件
[[email protected] ~]# ll /etc/rc.d/rc.local
-rw-r--r--. 1 root root 811 3月 7 10:37 /etc/rc.d/rc.local
[[email protected] logs]# chmod +x /etc/rc.d/rc.local
[[email protected] logs]# ll /etc/rc.d/rc.local
-r-xr-xr-x 1 root root 531 5月 28 14:47 /etc/rc.d/rc.local
看樣子是版本的變遷，/etc/rc.local /etc/rc.d/rc.local正在棄用的路上。
看了readme才是最好的document啊！
![linux-svn解除安裝與安裝[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)