python ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed:

Install Python certificates! (A common issue on macOS.)

Open these files: 

Install Certificates.command

Update Shell Profile.command

Run these two scripts and you wont have this issue any more.

codehexaui-iMac:Python 3.7 codehexa$ pwd

/Applications/Python 3.7

codehexaui-iMac:Python 3.7 codehexa$ ls -tlr

total 696

-rwxr-xr-x  1 root  wheel   2532 Mar 26 05:55 Update Shell Profile.command

-rw-r--r--  1 root  wheel   3875 Mar 26 05:55 ReadMe.rtf

-rw-r--r--  1 root  wheel  13327 Mar 26 05:55 License.rtf

-rwxr-xr-x  1 root  wheel   1418 Mar 26 05:55 Install Certificates.command

-rw-r--r--@ 1 root  wheel      0 Mar 26 05:55 Icon?

lrwxr-xr-x  1 root  wheel     98 Jul  2 04:39 Python Documentation.html -> /Library/Frameworks/Python.framework/Versions/3.7/Resources/English.lproj/Documentation/index.html

drwxr-xr-x  3 root  wheel     96 Jul  2 04:39 Python Launcher.app

drwxr-xr-x  3 root  wheel     96 Jul  2 04:39 IDLE.app

codehexaui-iMac:Python 3.7 codehexa$ ./Install\ Certificates.command 

 -- pip install --upgrade certifi

Requirement already up-to-date: certifi in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (2019.6.16)

You are using pip version 19.0.3, however version 19.1.1 is available.

You should consider upgrading via the 'pip install --upgrade pip' command.

 -- removing any existing file or link

 -- creating symlink to certifi certificate bundle

 -- setting permissions

 -- update complete

codehexaui-iMac:Python 3.7 codehexa$ ./Update\ Shell\ Profile.command 

This script will update your shell profile when the 'bin' directory

of python is not early enough of the PATH of your shell.

These changes will be effective only in shell windows that you open

after running this script.

All right, you're a python lover already

Install docker(CentOS7)

[root@mail ~]# yum install -y yum-utils
Loaded plugins: auto-update-debuginfo, fastestmirror, langpacks
Determining fastest mirrors
 * base: ftp.kaist.ac.kr
 * extras: ftp.kaist.ac.kr
 * updates: ftp.kaist.ac.kr
base-debuginfo                                                                                 | 2.5 kB  00:00:00  
base-debuginfo/x86_64/primary_db                                                               | 2.6 MB  00:00:04  
Package yum-utils-1.1.31-50.el7.noarch already installed and latest version
Nothing to do

[root@mail ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: auto-update-debuginfo, fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

[root@mail ~]# yum install -y docker-ce
Loaded plugins: auto-update-debuginfo, fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: ftp.kaist.ac.kr
 * extras: ftp.kaist.ac.kr
 * updates: ftp.kaist.ac.kr
docker-ce-stable                                                                               | 3.5 kB  00:00:00  
docker-ce-stable-debuginfo                                                                     | 3.5 kB  00:00:00  
(1/4): docker-ce-stable/x86_64/updateinfo                                                      |   55 B  00:00:00  
(2/4): docker-ce-stable/x86_64/primary_db                                                      |  29 kB  00:00:00  
(3/4): docker-ce-stable-debuginfo/x86_64/updateinfo                                            |   55 B  00:00:00  
(4/4): docker-ce-stable-debuginfo/x86_64/primary_db                                            | 6.4 kB  00:00:00  
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction, or "yum-complete-transaction --cleanup-only" and "yum history redo last", first to finish them. If those don't work you'll have to try removing/installing packages by hand (maybe package-cleanup can help).
--> Running transaction check
---> Package docker-ce.x86_64 3:18.09.7-3.el7 will be installed
--> Processing Dependency: container-selinux >= 2.9 for package: 3:docker-ce-18.09.7-3.el7.x86_64
--> Processing Dependency: containerd.io >= 1.2.2-3 for package: 3:docker-ce-18.09.7-3.el7.x86_64
--> Processing Dependency: docker-ce-cli for package: 3:docker-ce-18.09.7-3.el7.x86_64
--> Running transaction check
---> Package container-selinux.noarch 2:2.99-1.el7_6 will be installed
---> Package containerd.io.x86_64 0:1.2.6-3.3.el7 will be installed
---> Package docker-ce-cli.x86_64 1:18.09.7-3.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

======================================================================================================================
 Package                        Arch                Version                       Repository                     Size
======================================================================================================================
Installing:
 docker-ce                      x86_64              3:18.09.7-3.el7               docker-ce-stable               19 M
Installing for dependencies:
 container-selinux              noarch              2:2.99-1.el7_6                extras                         39 k
 containerd.io                  x86_64              1.2.6-3.3.el7                 docker-ce-stable               26 M
 docker-ce-cli                  x86_64              1:18.09.7-3.el7               docker-ce-stable               14 M

Transaction Summary
======================================================================================================================
Install  1 Package (+3 Dependent packages)

Total download size: 59 M
Installed size: 243 M
Downloading packages:
(1/4): container-selinux-2.99-1.el7_6.noarch.rpm                                               |  39 kB  00:00:00  
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-18.09.7-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-18.09.7-3.el7.x86_64.rpm is not installed
(2/4): docker-ce-18.09.7-3.el7.x86_64.rpm                                                      |  19 MB  00:00:01  
(3/4): containerd.io-1.2.6-3.3.el7.x86_64.rpm                                                  |  26 MB  00:00:01  
(4/4): docker-ce-cli-18.09.7-3.el7.x86_64.rpm                                                  |  14 MB  00:00:00  
----------------------------------------------------------------------------------------------------------------------
Total                                                                                  29 MB/s |  59 MB  00:00:02  
Retrieving key from https://download.docker.com/linux/centos/gpg
Importing GPG key 0x621E9F35:
 Userid     : "Docker Release (CE rpm) "
 Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
 From       : https://download.docker.com/linux/centos/gpg
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : 2:container-selinux-2.99-1.el7_6.noarch                                                            1/4
setsebool:  SELinux is disabled.
  Installing : containerd.io-1.2.6-3.3.el7.x86_64                                                                 2/4
  Installing : 1:docker-ce-cli-18.09.7-3.el7.x86_64                                                               3/4
  Installing : 3:docker-ce-18.09.7-3.el7.x86_64                                                                   4/4
  Verifying  : 3:docker-ce-18.09.7-3.el7.x86_64                                                                   1/4
  Verifying  : 1:docker-ce-cli-18.09.7-3.el7.x86_64                                                               2/4
  Verifying  : containerd.io-1.2.6-3.3.el7.x86_64                                                                 3/4
  Verifying  : 2:container-selinux-2.99-1.el7_6.noarch                                                            4/4

Installed:
  docker-ce.x86_64 3:18.09.7-3.el7                                                                                  

Dependency Installed:
  container-selinux.noarch 2:2.99-1.el7_6  containerd.io.x86_64 0:1.2.6-3.3.el7  docker-ce-cli.x86_64 1:18.09.7-3.el7

Complete!

[root@mail ~]# systemctl start docker

[root@mail ~]# ps -ef | grep docker

root      82984      1  0 07:09 ?        00:00:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

root      83623  69874  0 07:09 pts/0    00:00:00 grep --color=auto docker

[root@mail ~]# docker info

Containers: 0

 Running: 0

 Paused: 0

 Stopped: 0

Images: 0

Server Version: 18.09.7

Storage Driver: overlay2

 Backing Filesystem: xfs

 Supports d_type: true

 Native Overlay Diff: true

Logging Driver: json-file

Cgroup Driver: cgroupfs

Plugins:

 Volume: local

 Network: bridge host macvlan null overlay

 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog

Swarm: inactive

Runtimes: runc

Default Runtime: runc

Init Binary: docker-init

containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb

runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f

init version: fec3683

Security Options:

 seccomp

  Profile: default

Kernel Version: 3.10.0-957.1.3.el7.x86_64

Operating System: CentOS Linux 7 (Core)

OSType: linux

Architecture: x86_64

CPUs: 1

Total Memory: 1.777GiB

Name: mail.naver.com

ID: 7XS6:53U6:SGZI:WRQU:QQJ4:T2W5:CRAW:JJL4:4CH4:NX3J:OF34:653B

Docker Root Dir: /var/lib/docker

Debug Mode (client): false

Debug Mode (server): false

Registry: https://index.docker.io/v1/

Labels:

Experimental: false

Insecure Registries:

 127.0.0.0/8

Live Restore Enabled: false

Product License: Community Engine

[root@mail ~]# docker -v
Docker version 18.09.7, build 2d0083d

Mysql 재설치 오류시 참고

https://forum.ubuntu-kr.org/viewtopic.php?t=26544

Install rewrap on Solaris 11

sqlplus를 이용하던 중 화살표 키를 이용하여 이전 명령을 수행시

SCOTT@orcl> ^[[A^[[A^[[A 처럼 나와서 예전에 리눅스에서 사용한 rlwrap가 생각이 나서

설치를 해본다.

# pkgadd -d http://get.opencsw.org/now

# /opt/csw/bin/pkgutil -U

# /opt/csw/bin/pkgutil -y -i rlwrap

# /opt/sbin/pkgchk -L CSWrlwrap # list files                           // 잘 설치 되었는지 확인

출처 - https://www.opencsw.org/packages/rlwrap/

설치가 잘 되었다면

사용자 계정의 PATH에  /opt/csw/bin 을 추가한 후 사용하면 된다.

$ rlwrap sqlplus

이제 부터는 화살표 키를 이용하여 history 확인이 가능하여 이전에 입력한 명령어를
쉽게 다시 수행할 수 있다.