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Test if a command outputs an empty string
... seem convenient and easy, I suppose it will break easily. Writing a small script/application that returns 0 or 1 depending on the result is much more reliable!
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Split value from one field to two
... Sometimes, you have to do it. F.e. I need it in a migration script, so I don't care about performances.
– Matthieu Napoli
Nov 5 '13 at 11:13
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git:// protocol blocked by company, how can I get around that?
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Works great! No more search and replace. Build scripts just work now. This answer saved me a lot of time. Thanks!
– Jeremy Bell
May 1 '13 at 13:05
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What is your most productive shortcut with Vim?
...reated as an extension of our editor. I have occasionally used these with scripts that pulled data from a database, or with wget or lynx commands that pulled data off a website, or ssh commands that pulled data from remote systems.
Another useful ex command is :so (short for :source). This reads t...
Checkout one file from Subversion
...uperior method if you just want to grab the latest version of a particular script as part of a deploy, or something.
– william.berg
Aug 2 '13 at 11:44
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When should I use uuid.uuid1() vs. uuid.uuid4() in python?
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My team just ran into trouble using UUID1 for a database upgrade script where we generated ~120k UUIDs within a couple of minutes. The UUID collision led to violation of a primary key constraint.
We've upgraded 100s of servers but on our Amazon EC2 instances we ran into this issue a few t...
error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss
...ket file:
socket=/var/lib/mysql/mysql.sock
Sometimes the system startup script that launched the command line executable specifies a flag --socket=path. This flag could override the my.cnf location, and that would result in a socket not being found where the my.cnf file indicates it should be. T...
Orchestration vs. Choreography
...vice composition.
Service Choreography
Service choreography is a global description of the participating services, which is defined by exchange of messages, rules of interaction and agreements between two or more endpoints. Choreography employs a decentralized approach for service composition.
The...
Difference between CR LF, LF and CR line break types?
... @Hashim it might display properly but trying to run a textual shell script with carriage returns will usually result in an error
– Omer
Apr 24 '19 at 14:06
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What's the difference between a web site and a web application? [closed]
...y, the line is fine. Historically, web apps were the ones with code and/or scripts (in Perl/CGI, PHP, ASP, etc.) on the server, and sites were the ones with static pages. Currently, everyone and their uncle's cat are running forums, guestbooks, CMS - that's all server code.
Another distinction is a...