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How do I use shell variables in an awk script?
...different Field Separator FS for each file.
awk 'some code' FS=',' file1.txt FS=';' file2.ext
Variable after the code block will not work for the BEGIN block:
echo "input data" | awk 'BEGIN {print var}' var="${variable}"
Here-string
Variable can also be added to awk using a here-string fro...
How to do a batch insert in MySQL
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How about LOAD DATA LOCAL INFILE '/users/name/txt.file'
– double_j
Nov 17 '14 at 18:39
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What are the correct link options to use std::thread in GCC under linux?
...le CMake file for compiling a C++11 program that uses threads:
CMakeLists.txt:
cmake_minimum_required(VERSION 2.8)
list(APPEND CMAKE_CXX_FLAGS "-pthread -std=c++11 ${CMAKE_CXX_FLAGS}")
add_executable(main main.cpp)
One way of building it is:
mkdir -p build
cd build
cmake .. && make
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Change R default library path using .libPaths in Rprofile.site fails to work
...esn't work for me (neither does the solution from BondedDust). I created a txt file and saved it as .Rprofile in the folder from getwd().
– John
Apr 7 '14 at 18:01
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How to calculate the CPU usage of a process by PID in Linux from C?
...stat. These are the first few fields (from Documentation/filesystems/proc.txt in your kernel source):
Table 1-3: Contents of the stat files (as of 2.6.22-rc3)
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Field Content
pid process id
tcomm ...
Print commit message of a given commit in git
...-since=1/11/2011 --until=28/11/2011 --no-merges --format=%B > CHANGELOG.TXT
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Android emulator freezing OS X v10.9 (Mavericks) with HAXM
... Core Duo 2 Mavericks machines. It states in the HAXM 1.1.1 Release Notes.txt file:
HAXM driver does not support emulating a 64 bit system image on Intel systems based on Core microarchitecture (Core, Core2 Duo etc.).
But, it seems like even trying to emulate a 32 bit system is problematic.
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How can I change a file's encoding with vim?
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From the doc:
:write ++enc=utf-8 russian.txt
So you should be able to change the encoding as part of the write command.
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Rolling or sliding window iterator?
...For an example of use case for the step parameter, see Processing a large .txt file in python efficiently.
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Retrieve the commit log for a specific line in a file?
... using pick-axe.
git log -S'the line from your file' -- path/to/your/file.txt
This will give you all of the commits that affected that text in that file. If the file was renamed at some point, you can add --follow-parent.
If you would like to inspect the commits at each of these edits, you can p...