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Replace comma with newline in sed on MacOS?
I have a file of id's that are comma separated. I'm trying to replace the commas with a new line. I've tried:
13 Answers
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How to zero pad a sequence of integers in bash so that all have the same width?
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In your specific case though it's probably easiest to use the -f flag to seq to get it to format the numbers as it outputs the list. For example:
for i in $(seq -f "%05g" 10 15)
do
echo $i
done
will produce the following output:
00010
00011
000...
Search and replace in bash using regular expressions
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Use sed:
MYVAR=ho02123ware38384you443d34o3434ingtod38384day
echo "$MYVAR" | sed -e 's/[a-zA-Z]/X/g' -e 's/[0-9]/N/g'
# prints XXNNNNNXXXXNNNNNXXXNNNXNNXNNNNXXXXXXNNNNNXXX
Note that the subsequent -e's are processed in order. Also, the g flag for the expression will mat...
usr/bin/ld: cannot find -l
I'm trying to compile my program and it returns this error :
14 Answers
14
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How to run `rails generate scaffold` when the model already exists?
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TL;DR: rails g scaffold_controller <name>
Even though you already have a model, you can still generate the necessary controller and migration files by using the rails generate option. If you run rails generate -h you can see all of...
Split string to equal length substrings in Java
How to split the string "Thequickbrownfoxjumps" to substrings of equal size in Java.
Eg. "Thequickbrownfoxjumps" of 4 equal size should give the output.
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How to compile and run C/C++ in a Unix console/Mac terminal?
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If it is a simple single source program:
make foo
where the source file is foo.c or foo.cpp, etc.
You dont even need a makefile. Make has enough built-in rules to build your source file into an executable of the same name, minus extension.
R...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...索引容器multi_index_container性能测试
原文地址：http://blog.csdn.net/gongxinheng/archive/2010/03/27/5421914.aspx
by: HengStar 2010/3/27
我是一名游戏开发程序员，研究C++ Boost库已经有一小段时日了，学的越多愈发愈感觉出它的强大，每次学习后...
Convert a series of parent-child relationships into a hierarchical tree?
...ical tree structures as possible. So for example, these could be the pairings:
11 Answers
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Find a class somewhere inside dozens of JAR files?
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answered Aug 27 '09 at 18:32
Andreas DolkAndreas Dolk
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