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, The interpreter (interpreter) needs to read the source code that we wrote and convert it to the target (object), which is then run by the computer. Because each execution of the program is more than the compilation process, so efficiency has decreased.The advantage of using scripting languages is that they are mostly run at a higher level than the compiled language and can easily handle objects such as files and directories, and the disadvantage is
Transfer from http://blog.chinaunix.net/uid-20328094-id-95121.htmlA very good bash scripting tutorial, at least not in contact with bash can read!Create a scriptThere are many different shells in Linux, but usually we use Bash (Bourne again shell) for Shell programming because bash is free and easy to use. So the script I've provided in this article is all about using bash (but in most cases these scripts c
C # Game-Assisted Scripting Learning record (September 3, 2017)Use ideasUse the ListBox control to display all my tasks and the tasks I have selected.Left is listbox_ selected task , right is listbox_ task ListDouble-click Add content to another ListBox list (from task List → selected task)Using the double-click event in the ListBox, there are 2 double-click events, DoubleClick and MouseDoubleClickI do not know what is the difference, try to feel the
# input Check:If [-Z ']; ThenError "Error:you must specify a file, use-h for help"FiFilen= "$"# Rename any. 1,. 2 etc File:For N in 9 8 7 6 5 4 3 2 1; DoIf [-F ' $filen. $n "]; Thenp= ' expr $n + 1 'echo "MV $filen. $n $filen. $p"MV $filen. $n $filen. $pFiDone# Rename the original file:If [-F "$filen"]; Thenecho "MV $filen $filen. 1"MV $filen $filen. 1Fiecho Touch $filenTouch $filenHow does this script work? After detecting a file name provided by the user, we perform a 9 to 1 loop. File 9 is na
, it is important to note that if a variable $param is defined in the B.VM , the value defined in the B.VM will be used in B.VM. Ten. Escape characteruse of ' \ 'If reference is defined, two ' \ ' means output a ' \ ', if not defined, just as it is output. such as: #set ($email = "foo")$email\ $email\ \ $email\\\ $emailOutput:Foo$email\foo\ $emailIf $email not defined$email\ $email\ \ $email\\\ $emailOutput:$email\ $email\ \ $email\ \ $email (front three slash , here two ) One.built-in object
script rotatefile can solve this problem. This script can rename the message to save the file (assuming outmail) is OUTMAIL.1, and for outmail.1 it becomes outmail.2 and so on ...
The code is as follows:
#!/bin/sh
# vim: set sw=4 ts=4 et:
ver="0.1"
help()
{
cat
How does this script work? After detecting a file name provided by the user, we perform a 9 to 1 loop. File 9 is named 10, file 8 is renamed to 9, and so on. After the loop is complete, we name the original file 1
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