function does not contain a return statement, its status is set based on the status of the last statement executed in the function. To actually return arbitrary values to the caller you must use other mechanisms. The simplest way to return a value from a bash function is to just set a gl...
Bash Function Return Bash functions differ from most programming languages when it comes to returning a value from a function. By default, bash returns the exit status of the last executed command in the function's body. The script below shows how to specify the exit status using return: 1....
Return 0 无错误返回。 Return 1 有错误返回 五、函数返回值测试 可以直接在脚本调用函数语句的后面使用最后状态命令来测试函数调用的返回值。例如: check_it_is_a_directory $FILENAME # this is the function call and check if [ $? == 0 ] # use the last status command now to test then echo "A...
Function Return A bash function can return a value via its exit status after execution. By default, a function returns the exit code from the last executed command inside the function. It will stop the function execution once it is called. You can use the return builtin command to return ...
BASH 中函数参数的定义并不需要在函数定义处就制定,而只需要在函数被调用时用 BASH 的保留变量 $1 $2 ... 来引用就可以了;BASH 的返回值可以用 return 语句来指定返回一个特定的整数,如果没有 return 语句显式的返回一个返回值,则返回值就是该函数最后一条语句执行的结果(一般为 0,如果执行失败返回错误码...
之后进行命令搜索,先后调用如下函数:搜索特殊内置命令find_special_builtin()(此版本的bash包含如下特殊内置命令:break continue : eval exec exit return set unset export readonly shift source . times trap),搜索函数find_function(),搜索内置命令find_shell_builtin()。
builtin, orfunction, and returns the name of the diskfilethat would be executed-p returns either the name of the diskfilethat would be executed, or nothingif`type -t NAME'would not return `file'. ###要么返回可能被执行的磁盘文件名,要么假如type -t NAME不返回file则什么也不做。-t output...
*/ private static String dateformat = “yyyy-MM-dd hh:mm:ss”; /** * 获取日期字符串格式 * * @return */ public static...String getDateformat() { return dateformat; } /** ...
# Define the is_prime function is_prime() { local num=$1 # Check if num is less than 2 if [ $num -lt 2 ]; then return 1 fi # Check if num is divisible by any number from 2 to sqrt(num) for ((i = 2; i * i <= num; i++)); do ...
我在这里研究了在BASH if-then语句中处理函数返回值的各种方法,但似乎都不起作用。这是我得到的 { then return $FAILURE如果我自己调用它并检查返回值,它将会工作,如下所示: retval=$?fi 如何在if语句中使 浏览2提问于2017-10-12得票数 0 2回答 在Ruby中检查if语句中的bash命令 如何在Ruby的if语句中检查...