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How to get a variable value if variable name is stored as string?
...ariable_value="\$$variable_name"
fi
echo "$variable_value"
}
test=123
get_value_of test
# 123
test="\$(echo \"something nasty\")"
get_value_of test
# $(echo "something nasty")
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impr...
How to properly create an SVN tag from trunk?
...revision of the trunk and "tag" it as well. the command: svn copy -r 123 "svn.example.com/project/trunk" "svn.example.com/project/tags/1.0" -m "Tagging, but using older revision (123)."
– granadaCoder
Oct 18 '11 at 16:39
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How to write binary data to stdout in python 3?
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import os
os.write(1, a.tostring())
or, os.write(sys.stdout.fileno(), …) if that's more readable than 1 for you.
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impro...
How to make the hardware beep sound in Mac OS X 10.6
I just want that Mac OS X 10.6 does a hardware beep sound like in open suse and other distributions. I tried following approaches
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Subprocess changing directory
...change another process's working directory (again, at least on a UNIX-like OS, but as well on Windows), this call will have the subshell change its dir and exit immediately.
What you want can be achieved with os.chdir() or with the subprocess named parameter cwd which changes the working directory ...
Library not loaded: libmysqlclient.16.dylib error when trying to run 'rails server' on OS X 10.6 wit
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For those who are curious what's going on, this command makes a symbolic link from the second location to the first. When the gem looks for the MySQL client library under /usr/lib, that link will resolve to the location where it's ...
How to force R to use a specified factor level as reference in a regression?
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See the relevel() function. Here is an example:
set.seed(123)
x <- rnorm(100)
DF <- data.frame(x = x,
y = 4 + (1.5*x) + rnorm(100, sd = 2),
b = gl(5, 20))
head(DF)
str(DF)
m1 <- lm(y ~ x + b, data = DF)
summary(m1)
Now alter the factor ...
mongod, mac os x - rlimits warning [closed]
I've been using mongo on my mac os x 10.8 and suddenly yesterday at my logs appeared this warning (and when starting shell it's present too) -
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Mac OS 可视化ssh文件传输工具（替代scp命令行） - 更多技术 - 清泛网 - 专...
Mac OS 可视化ssh文件传输工具（替代scp命令行）推荐Cyberduck小黄鸭推荐Cyberduck小黄鸭：
具体请参见：《Mac OS X 平台有哪些好用的 SSH 客户端？ mac 怎么登录到 linux 服务器并传输文件？》Mac 可视化 ssh 文件传输
Mac OS X 程序员开发工具集锦 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Mac OS X 程序员开发工具集锦svn没有mac版怎么办？推荐使用smartsvn替代。不过用起来没有TortoiseSVN方便，只有简单的右键菜单（update、commit），更多操作可以在smart svn没有mac版怎么办？ 点此下载
推荐使用smartsvn替代。不过用起来...