...有关shell与SQL之间的变量传递,请参考: Linux/Unix shell sql 之间传递变量 1、启动sqlplus时执行脚本并传递参数 robin@SZDB:~/dba_scripts/...SQL提示符下来传递参数, SQL>@script_name $para1 $para2 d、方式3则是将shell变量的值先传递给define定义的变量,然后再传递给SQL脚本 SQL>@script_name......
1. How to use in if condition in shell script? To use an if condition in a shell script, you can follow the basic syntax of an if statement. Here’s an example: if[condition];then# code to execute if condition is truefi For example, to check if a file exists: ...
文件大小（stat -c %s）将以字节为单位给予大小，其中df ${SFTP_PATH}将以kb为单位给出磁盘可用大小...
是一种常见的编程技巧,可以根据特定条件对数据进行分类或转换。下面是一个完善且全面的答案: 在R中,使用if else条件可以根据指定的条件创建新变量。if else语句的一般格式如下: ```R ...
Here are some useful examples of if-else in shell scripts to give you a better idea of how to use this tool. Command Description && Logical AND $0 Argument 0 i.e. the command that’s used to run the script $1 First argument (change number to access further arguments) -eq Equality ch...
Similarly, shell functions can return an exit status by including an integer argument to thereturn command. If we were to convert the script above to a shell function to includeit in a larger program, we could replace the exit commands with return statementsand get the desired behavior: ...
I want to use the value from a function in an if/then conditional but I can't seem to get it to work. Here is what I have function continue () { This function asks the user if he wants to continue script execution. It returns a 0 (zero) if "y" or "Y" is selected, a 1 ...
Just like any other programming language, you can use the elseif command in expect as shown below. if { $count < 0} { puts "Success Condition1 : $count\n"; } elseif { $count == 0 } { puts "Success Condition2 : $count\n"; ...
There are many advantages of single lines over their script counterparts: commonly adhere to the “one tool for one job” philosophy of UNIX generally use coding idioms, which optimize speed and size usually bare-bones, minimum red tape
The following table list the condition possibilities for both the single- and the double-bracket syntax. Save a single exception, the examples are given in single-bracket syntax, but are always compatible with double brackets. 1. File-based conditions: ...