return (p->status); } 4、和$?汇合 在shell中通过$?来显示前一个命令的执行结果,所以我们看一下这个结果是如何和$?结合在一起的。在execute_command_internal函数的最后,会将waitfor的返回值赋值给全局变量 last_command_exit_value : last_command_exit_value = exec_result; static WORD_DESC * param_exp...
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. Create a script and...
The customer is running a pipeline command, when using "echo $?", only the return value of last command could be got, how to get the return value from the second command?Raw # df |awk '{print $5}' |grep /mnt 2>&1 | tee ./log; echo $? 1 Environment Red Hat Enterprise ...
This is where the shell timeout code is executed. */intread_command(){...result=parse_command();...return(result);}.../* Call the YACC-generated parser and return the status of the parse. Input is read from the current input stream (bash_input). yyparse leaves the parsed command in...
...commands.getstatusoutput('cat aaa.sql') 19>>> print a 200 21>>> print b 22aaa 也就是说,commands.getstatusoutput的方法,可以得到一个脚本或者一个命令的返回值和执行结果...] 7else: 8 result["result"] = false 9 result["message"] = res 10return Response(result) 如果脚本中是对数据...
Utilizing the -n Option with bash wait Command The -n option allows the wait command to pause only for a single job from the given PIDs or jobspecs to complete and returns its exit status. If no arguments are provided, wait -n waits for any background job to complete and return the ...
return [n] Copy Bash Download If used: inside a function. Return value specified by n. If n is omitted, the return status is that of the last command executed in the function body. outside a function, during execution of a script by the . (source) command, it causes the shell ...
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The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each command to terminate in turn. The return status is the exit status of the last command executed. AND and OR lists are sequences ...
@test "A test I don't want to execute for now" { skip "This command will return zero soon, but not now" run foo [ "$status" -eq 0 ] }Or you can skip conditionally:@test "A test which should run" { if [ foo != bar ]; then skip "foo isn't bar" fi run foo [ "$...