?? flock_test.pl
字號:
#!/usr/bin/perl -wTuse IO::File;use Fcntl ":flock";*FH1 = new_tmpfile IO::File or die "Cannot open temporary file: $!\n";eval { flock FH1, LOCK_SH };$@ and die "It does not look like your system supports flock: $@\n";open FH2, ">> &FH1" or die "Cannot dup filehandle: $!\n";if ( flock FH2, LOCK_SH | LOCK_NB ) { print "Your system supports shared file locks\n";}else { print "Your system only supports exclusive file locks\n";}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -