首先执行gcc -g -o test test.c生成可执行的test文件,然后在exec_function中就可以被引用。 执行结果如下
功能: The system function runs the command passed to it as string and waits for it to complete. The command is executed as if the command $ sh −c string has been given to a shell. 【也就是说,system要使用一个shell来启动指定的程序】 例: #include #include int main() { printf("Run...
[root@localhost /scripts]# fun2() { echo "hello $1"; } [root@localhost /scripts]# fun2 linux hello linux #4.给函数传递多个参数{$*,接收所有的参数传递} [root@localhost /scripts]# fun3() { echo "hello $*"; } [root@localhost /scripts]# fun3 zhangsan lisi wangwu hello zhangsan lisi...
exec as such did not exist; its function was already performed, using explicit IO, by the shell...
对于exec函数族来说，它的作用通俗来说就是使另一个可执行程序替换当前的进程，当我们在执行一个进程的...
function file1 { >$OUTFILE #zero out the file ,相当于清空该文件 exec 4>&1 exec 1> $OUTFILE while read LINE do echo "$LINE" : done < $INFILE exec 1>&4 exec 4>&- } file1 echo "end" 1. 2. 3. 4. 5. 6. 7. 8.
可以 //字体变粗 document.execCommand(‘Bold’); //变斜体 document.execCommand(‘Italic’); } /* *该function用来将选中的区块加上不同的线条 */ function fn_change_selection() { //将选中的文字加下划线 document.execCommand(‘Underline’); //在选中的文字上划粗线 document.execCommand(‘...
have been considerably more complicated, if only becauseexecas such did not exist; its function ...
Linux系统exec命令（Linux system exec command）Shell's built-in exec command will not start a new shell, but with the command to be executed by the shell to replace the current process, and will clean up the environment of the old process, and other orders will be executed no longer after...
Linux+NginxApache下的PHPexec函数执行Linux命令 Linux+NginxApache下的PHPexec函数执⾏Linux命令 1、php.ini配置⽂件 打开PHP的配置⽂件，⾥⾯有⼀⾏ disable_function 的值，此处记录了禁⽌运⾏的函数，在⾥⾯将exec和shell_exec、system等函数删除。2、权限问题 修改以后PHP可以运⾏部分命令了...