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How do I set a variable to the output of a command in Bash?
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In addition to backticks `command`, command substitution can be done with $(command) or "$(command)", which I find easier to read, and allows for nesting.
OUTPUT=$(ls -1)
echo "${OUTPUT}"
MULTILINE=$(ls \
-1)
echo "${MULTILINE}"
Quoting (") does ma...
How to best position Swing GUIs?
...creen looks so.. "splash-screen'ish". I keep waiting for them to disappear and the real GUI to appear!
Since Java 1.5 we've had access to Window.setLocationByPlatform(boolean). which..
Sets whether this Window should appear at the default location for the native windowing system or at the curre...
create a trusted self-signed SSL cert for localhost (for use with Express/Node)
...irefox is behaving nicely - just confirm localhost as a security exception and it will work. Chrome doesn't:
Step 1. in your backend, create a folder called security. we will work inside it.
Step 2. create a request config file named req.cnf with the following content (credit goes to: @Anshul)
re...
How to unmount a busy device
...s daily. I already have code to recognize shared drives (from a SQL table) and mount them in a special directory where all users can access them.
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Commands executed from vim are not recognizing bash command aliases
I use bash on mac and one of the aliases is like this
5 Answers
5
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Java 8 Streams - collect vs reduce
...t argument to the operator is the return value of the previous application and the second argument is the current stream element.
collect is an aggregation operation where a "collection" is created and each element is "added" to that collection. Collections in different parts of the stream are then...
Merge PDF files
...splitting documents page by page,
* merging documents page by page,
(and much more)
Here's a sample program that works with both versions.
#!/usr/bin/env python
import sys
try:
from PyPDF2 import PdfFileReader, PdfFileWriter
except ImportError:
from pyPdf import PdfFileReader, PdfFil...
Assign output of a program to a variable using a MS batch file
...et VAR=%%i
Note that the first % in %%i is used to escape the % after it and is needed when using the above code in a batch file rather than on the command line. Imagine, your test.bat has something like:
for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %d...
MySQL CONCAT returns NULL if any field contain NULL
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Sorry neeraj i missed the '_' between Concat and WS Please try again with CONCAT_WS().I have updated the answer please check,
– Gurmeet
Apr 1 '13 at 10:14
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Where can I find “make” program for Mac OS X Lion?
Just upgraded my computer to Mac OS X Lion and went to terminal and typed "make" but it says:
-bash: make: command not found
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