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Using 'return' in a Ruby block
I'm trying to use Ruby 1.9.1 for an embedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, t...
How to get the instance id from within an ec2 instance?
...tance-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
An example of a more advan...
SQL Server: Make all UPPER case to Proper Case/Title Case
...orted as all UPPER CASE and I would like to turn it into Proper Case. What script have any of you used to complete this?
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Installing older version of R package
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@Thomas I am going to try to run my script on Amazon EC2 to avoid the obvious local problems on my machine (library paths, versions of R vs versions of packages, compiling issues etc.)
– Antoine
Jul 16 '15 at 10:35
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Tuning nginx worker_process to obtain 100k hits per min
...set the open file count value per process. This is better done in the init script.
– Ethan
May 19 '13 at 20:53
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How to get JavaScript caller function line number? How to get JavaScript caller source URL?
I am using the following for getting the JavaScript caller function name:
15 Answers
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How to get current time and date in Android
... assumes ASCII text and is therefore not suitable
for use with non-ASCII scripts.
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Getting only response header from HTTP POST using curl
... if reachable or not). Do not use in, say, conditional statements in shell scripting...
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How to make rpm auto install dependencies
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This doesn't work very well if you're trying to script RPM to automate the install of YUM on AIX like me ;-)
– Tricky
Mar 14 '18 at 10:32
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Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
...the parent table (which is what your query discovers) then the foreign key script will fail.
– Vincent
Jan 16 '15 at 19:05
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