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How does “cat
I needed to write a script to enter multi-line input to a program ( psql ).
9 Answers
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
...n randomness: per the GNU docs, "By default these commands use an internal pseudo-random generator initialized by a small amount of entropy, but can be directed to use an external source with the --random-source=file option."
– Royce Williams
Nov 26 '15 at 6:11...
String.Join method that ignores empty strings?
...PT_SearchTerms;
And even with the glorious MS-SQL-Server it's possible (PS: that's sarcasm):
DECLARE @in_SearchTerm1 nvarchar(100)
DECLARE @in_SearchTerm2 nvarchar(100)
DECLARE @in_SearchTerm3 nvarchar(100)
DECLARE @in_SearchTerm4 nvarchar(100)
SET @in_SearchTerm1 = N'a'
SET @in_SearchTerm2...
The term 'Get-ADUser' is not recognized as the name of a cmdlet
...rver Administration Tools (KB958830). After installing do the following steps:
Open Control Panel -> Programs and Features -> Turn On/Off Windows Features
Find "Remote Server Administration Tools" and expand it
Find "Role Administration Tools" and expand it
Find "AD DS And AD LDS Tools" and...
How do I set $PATH such that `ssh user@host command` works?
...thing like this:
# If not running interactively, don't do anything
[ -z "$PS1" ] && return
You want to put anything for non-interactive shells before this line.
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`testl` eax against eax?
... realized I had almost exactly duplicated most of what I wrote in June. Oops! I updated it with more reasoning to back up my claim that test a,a and cmp $0,a set flags identically; thanks for pointing out that that's a non-trivial claim. re: TEST vs. test: recently I've started using all-caps lik...
How do I get SUM function in MySQL to return '0' if no values are found?
...
PS. For anyone working with Postgres, it supports only coalesce.
– Siddhartha
Dec 7 '17 at 6:27
add ...
Virtual functions and performance - C++
...the iPhone is a good example of performant code: youtube.com/watch?v=Pdk2cJpSXLg
– Crashworks
Jun 10 '11 at 22:18
13
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Step-by-step debugging with IPython
... and a list of commands. IPython is now called (edit: part of) Jupyter.
ps: note that an ipdb command takes precedence over python code. So in order to write list(foo) you'd need print list(foo).
Also, if you like the ipython prompt (its emacs and vim modes, history, completions,…) it's easy t...
How to initialize log4j properly?
...stions in Linux how to determine your classpath value:
$ echo $CLASSPATH
$ ps wuax | grep -i classpath
$ grep -Ri classpath /etc/tomcat? /var/lib/tomcat?/conf /usr/share/tomcat?
or from Java: System.getProperty("java.class.path").
Log4j XML
Below is a basic XML configuration file for log4j in XML f...