您正在检查$dir是否为非空，因此与您尝试实现的相反。请使用-z（或!-s）代替。
} else { print "directory not found\n"; } } [macg@localhost perltest]$ ls -F gogo test testdir/ tip.pl* [macg@localhost perltest]$ ./tip.pl kj directory not found [macg@localhost perltest]$ ./tip.pl testdir directory is exist if (!-e $file) 如果文件不存在 -r,-w,-x 权...
If the directory is not empty (so, no files or subdirectories), you either have to empty it yourself (a lot of work) or use a module to help you. The "File::Path" module, which comes with Perl, has a "remove_tree" which can take care of all of the hard work for you: use ...
问将xls转换为xlsx的Perl脚本正在生成空白xlsx和错误消息。EN执行下面的perl脚本将xls转换为xlsx，但是它...
directory is exist if (!-e $file) 如果文件不存在 -r,-w,-x 权限 if (-wfile)print"$file写权限!\n";if(−xfile) { print "$file 读权限!\n"; } -z是否为空文件,-s是否非空 if (-ztmp[0])print"fileisempty\n";if(len= -stmp[0])−s不仅能判断文件非空,还兼有计算文件大小的...
-W File is writable by real uid/gid. -X File is executable by real uid/gid. -O File is owned by real uid. -e File exists. -z File has zero size (is empty). -s File has nonzero size (returns size in bytes). -f File is a plain file. -d File is a directory. -l File ...
How to change directory (chdir, cd) in Perl? Unix and DOS commands - video chdir CHECK CHECK CHECK chmod Unix and DOS commands - video chmod chomp Chomp and $/, the Input Record Separator Installing and getting started with Perl Prompt, read from STDIN, read from the key...
Perl 诊断消息 类别含义 (W)警告(可选) (D)反对(可选) (S)严重警告(必需) (F)致命错误(可捕获) (P)你应该从未见过的内部错误(恐慌性的)(可捕获) (X)非常致命的错误(不可捕获) (A)外来错误消息(不是Perl生成的)
Usage: perl perlpp.pl [options] [filename] Options: -o, --output filename Output to the file instead of STDOUT. -D, --define name=value Set $D{name}=value in the generated code. The hash %D always exists, but is empty if you haven't specified any -D options. Also substitutes ...
}# cd to the script's local directoryif($req_params{SCRIPT_FILENAME}=~/^(.*)\/[^\/]+$/) {chdir$1; }close(PARENT_WR);close(STDIN);#fcntl(CHILD_RD, F_DUPFD, 0);syscall(&SYS_dup2,fileno(CHILD_RD),0);#open(STDIN, "<&CHILD_RD");exec($req_params{SCRIPT_FILENAME});die(...