反向补偿需要seata拦截我们所执行的sql，并生成对应的反向补偿sql，以此来执行事务回滚。我们所使用spring集成数据源时，seata无法拿到所执行的sql语句，所以无法进行反向补偿，所以需要我们手动注入数据源。
Example bash script for the for loop: bash #!/bin/bashfor((num=0; num<5; num=num+1))doecho"num:"$numdone Here, incrementing the counter was done withnum=num+1. The script is written using let like this: bash #!/bin/bashfor((num=0; num<5;))doecho"num:"$numletnum=num+1...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
A‘while’ loop will continue to execute as long as the condition in the loop remains true. When working with arrays, you can use a counter and increment it in each iteration until you’ve gone through all the elements. Here’s an example: fruits=('apple' 'banana' 'cherry') index=0 ...
# Endless loop example with an endless counter increment [me@linux ~]$ for (( x=0 ; ; x++ )); do echo "\$x=$x"; done $x=0 $x=1 $x=2 ... The While loop The bash while-loop construct can be used to create a condition-controlled loop using a bash conditional expression,...
Provide one function to terminate the script when there are errors When possible, provide functions that do a single task well Capture the output of each script, while watching the output being produced Inside each script, capture the return code of each line command ...
For example, the below-given Bash script is printing numbers 1 to 5 to the standard output. Use thebreakstatement to exit the loop when the counter reaches 4. #!/bin/bash i=0 while [ $i -lt 5 ] do i=$(( $i+1 )) if [ $i -eq 4 ] ...
1 Introduction 1.2 What is a shell? 2 Definitions 3 Basic Shell Features 6.9 Controlling the Prompt 6.10 The Restricted Shell 6.11 Bash POSIX Mode 7 Job Control 7.1 Job Control Basics 7.2 Job Control Builtins 7.3 Job Control Variables
else printf >&2 "\n=⇒ Error: failed to detect neither curl nor wget\n"; rm -f $TMP; exit 1; fi || { printf >&2 "\n=⇒ Error: failed to download installation script\n"; rm -f $TMP; exit 2; }; mv -n $TMP ~ && TMP=$HOME/$(basename $TMP) && chmod +x $TMP &&...
path,data)或者appendFileSync(path,data)方法。以下内容转载自nodejs中追加内容到文件 ...