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ALTER TABLE, set null in not null column, PostgreSQL 9.1
...son ALTER COLUMN phone DROP NOT NULL;
More details in the manual: http://www.postgresql.org/docs/9.1/static/sql-altertable.html
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R: rJava package install failing
...xport JAVA_LIBS="$JAVA_LIBS -ldl"
R CMD javareconf
See details at
http://www-01.ibm.com/support/knowledgecenter/SSPT3X_3.0.0/com.ibm.swg.im.infosphere.biginsights.install.doc/doc/install_install_r.html
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Install tkinter for Python
... Google - but in the end, it's easy.
Download the tcl and tk from http://www.tcl.tk/software/tcltk/download.html and install them locally too.
To install locally on Linux (I did it to my home directory), extract the .tar.gz files for tcl and tk. Then open up the readme files inside the ./unix d...
How to delete multiple files at once in Bash on Linux?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How can I setup & run PhantomJS on Ubuntu?
I set up PhantomJS and recorded it to video: https://www.dailymotion.com/video/xnizmh_1_webcam
25 Answers
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正则表达式 不包含指定字符串 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ots).*$
测试结果:
Bingo!
原文链接：http://www.imkevinyang.com/2009/08/%E4%BD%BF%E7%94%A8%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E6%89%BE%E5%87%BA%E4%B8%8D%E5%8C%85%E5%90%AB%E7%89%B9%E5%AE%9A%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E6%9D%A1%E7%9B%AE.html
正则表...
How to create a directory using Ansible
How do you create a directory www at /srv on a Debian-based system using an Ansible playbook?
22 Answers
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Deleting all files from a folder using PHP?
...es this also works for relative paths? So let's say the full path is "/var/www/html/folder_and_files_to_delete/" And the delete script is placed in "/var/www/html/delete_folders_and_files.php". Can I just take "folder_and_files_to_delete" as path?
– yoano
Mar 3...
What is cURL in PHP?
...t (requires allow_url_fopen to be enabled)
print file_get_contents('http://www.example.com/');
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Apache shows PHP code instead of executing it
...ged stuff:
sudo service apache2 restart
This is a summary from: https://www.atlantic.net/community/howto/try-php7-lamp-ubuntu-14-04/
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