test.sh
#!/bin/bash
for skill in Ada Coffe Action Java; do
echo “I am good at ${skill}Script”
done Output
bogon:Desktop macname$ ./test.sh
I am good at AdaScript
I am good at Cof
Category: OS
Operating System (Operating System, referred to as OS) is a computer program that manages and controls computer hardware and software resources. It is the most basic system software that runs directly on the “bare metal”. Any other software must be supported by the operating system to run .
Regular filtration special expressions
/**[ Filter and upload special emoticons Symbolic]
* @param $str
* @return mixed
*/
function filter_emoji($str)
{
$str = preg_replace_callback( //Perform a regular expression search and r
Win10 Installing MathType “Unable to load this loader mathpage.wll”
Reference blog: https://blog.csdn.net/m0_37518259/article/details/83755778
Problem background: win10 64-bit system, built-in office2019, use mathtype7.4 , After installing the mathtype templa
Regular expression – lookup $ in the string
Based on the suggestion here: Find location of character in string, I tried this:
> gregexpr(pattern = ‘$’,”data.frame.name$variable.name”)
[[1]]
[1] 30
attr(,”match.length”)
[1] 0
attr(,”us
YUM installer UnicodedecodeError
yum Installer Times Exception UnicodeDecodeError Traceback (most recent call last):
File “/usr/bin/ yum”, line 29, in
yummain.user_main(sys.argv[1:], exit_code=True)
File “/usr/share/yum-cli/yu
Shell Programming: Use scripts to achieve NGINX’s guardianship restart
nginx_daemon.sh #!/bin/bash
#
this_pid=$$
while true
do
ps -ef | grep nginx | grep -v grep | grep -v $ this_pid &> /dev/null
if [$? -eq 0 ];then
echo ” nginx is ok”
sleep 3
else
JMeter Beanshell assertion
This article is used to record the problems encountered in writing beanshell assertions.
Question 1: JSONObject not found in namespace
Process: Write the code under beanshell as follows
Command history and automatic logout
Environment variable location
System environment variable location: /etc/profile
User environment variable location: /home/usr
Command history modification
The command histo
Floating point regular expression between 0 and 1
I am trying to verify the input of floating-point numbers, where the maximum value is 1.0 and the minimum value is 0.
Min: 0
Max: 1 Possible value;
0.1
0.99
0.365 How can I succeed wit
Regular expression – What is the best way to verify the URL input by the user in the Cocoa application?
I am trying to build a self-made web browser in order to become more proficient in Cocoa. I need a good way to verify whether the user has entered a valid URL. I have tried some regular Expressions