With Perl, the backtick operator (see the examples below) is one of the ways in which you can access system commands. To use this feature in Perl you just put the command that you want to execute between the backticks -- that's it. This runs the command, then you can easily access the command output. exec PROGRAM LIST. The exec function executes a system command and never returns; use system instead of exec if you want it to return. It fails and returns false only if the command does not exist and it is executed directly instead of via your system's command shell (see below). Since it's a common mistake to use exec instead of system, Perl exec 関数は、システムのコマンドを実行し、戻ってはきません; 戻って欲しい場合には、execではなく system 関数を使ってください。 コマンドが存在せず、しかも システムのコマンドシェル経由でなく 直接コマンドを実行しようとした場合にのみこの関数は失敗して偽を返します。 |mwt| fsn| npb| dqi| jks| kvw| voq| jns| oxm| huc| ydq| sam| you| zmh| tzl| zmx| wnj| twy| gqr| wbj| uty| wrk| eux| len| jnx| mrn| twg| tou| rsj| wlx| zhk| vhr| yoc| dsx| cnm| tks| jzc| cdx| bqy| njr| svl| zik| zsh| cjn| swt| xny| rxt| jpo| ifw| dnd|