在bash中有"goto"声明吗？我知道这被认为是不好的做法,但我需要特别"goto".
如果条件为真而没有终止整个脚本,你将如何退出函数,只需在调用函数之前返回.
例
# Start script
Do scripty stuff here
Ok now lets call FUNCT
FUNCT
Here is A to come back to
function FUNCT {
if [ blah is false ]; then
exit the function and go up to A
else
keep running the function
fi
}
sh和之间有什么区别source？
source: source filename [arguments]
Read and execute commands from FILENAME and return. The pathnames
in $PATH are used to find the directory containing FILENAME. If any
ARGUMENTS are supplied, they become the positional parameters when
FILENAME is executed.
并为man sh:
NAME
bash - GNU Bourne-Again SHell
SYNOPSIS
bash [options] [file]
COPYRIGHT
Bash is Copyright (C) 1989-2004 by the Free Software Foundation, Inc.
DESCRIPTION
Bash is an sh-compatible command language interpreter that executes commands read …我想在我的Bash脚本中进行清理操作,如下所示:
#! /bin/bash
set -eu
trap 'echo "E: failed with exitcode $?" 1>&2' ERR
true
false
使用$?脑海作为一种自然选择,但事实并非如此.它总是包含0.有什么方法可以"窥探" ERR陷阱中的exitcode 吗？
[更新:]我不知道我之前测试过的是什么.这段代码就像一个魅力,所以我把它留在这里作为一个小而好的例子.