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How to check the extension of a filename in a bash script?
...nk you want to say "Are the last four characters of $file equal to .txt?" If so, you can use the following:
if [ ${file: -4} == ".txt" ]
Note that the space between file: and -4 is required, as the ':-' modifier means something different.
...
How to change the font size on a matplotlib plot
...otlib.rc('font', **font)
This sets the font of all items to the font specified by the kwargs object, font.
Alternatively, you could also use the rcParams update method as suggested in this answer:
matplotlib.rcParams.update({'font.size': 22})
or
import matplotlib.pyplot as plt
plt.rcParams.up...
导航条使用指导 · App Inventor 2 中文网
...直布局_消息.Visible = false
垂直布局_我的.Visible = false
if 页号 = 1 {
垂直布局_首页.Visible = true
} else if 页号 = 2 {
垂直布局_发现.Visible = true
} else if 页号 = 3 {
垂直布局_消息.Visible = true
} else {
垂直布局_我的.Visible =...
What is the bit size of long on 64-bit Windows?
... Aspen group; only systems with a long heritage of 64-bit operation use a different scheme). All modern 64-bit Unix systems use LP64. MacOS X and Linux are both modern 64-bit systems.
Microsoft uses a different scheme for transitioning to 64-bit: LLP64 ('long long, pointers are 64-bit'). This has...
Is it wrong to place the tag after the tag?
...outside of the <body> or <head> tags. It also won't make much difference — unless you're doing DOM manipulations that could break IE before the body element is fully loaded — to putting it just before the closing </body>.
<html>
....
<body>
....
<s...
How to effectively work with multiple files in Vim
...h> you can add a new tab; and with a regular :q or :wq you close a tab.
If you map :tabn and :tabp to your F7/F8 keys you can easily switch between files.
If there are not that many files or you don't have Vim 7 you can also split your screen in multiple files: :sp <filepath>. Then you can...
App Inventor 2 代码调试方式：App调试、问题排查方法 · App Inventor 2 中文网
...鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e.clientY - offsetY) + 'px'; }; // 鼠标释放时停止拖动 document.onmouseup = function(...
How to get a date in YYYY-MM-DD format from a TSQL datetime field?
...
If you take the default, in this case, you get the time value - the entire format for format 120 is 'yyyy-mm-dd hh:mi:ss'. By explicitly declaring the length, it is trimmed to the format you specified in yout original note -...
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
...firstName, lastName);
}
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Person person = (Person) o;
if (firstName != null ? !firstName.equ...
how to find host name from IP with out login to the host
...dig manpage:
Reverse lookups -- mapping addresses to names -- are simplified by the
-x option. addr is an IPv4 address in dotted-decimal notation, or a colon-delimited IPv6 address. When this option is used, there is no
need to provide the name, class and type arguments. dig automatically
...