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how to check if a file exists using
Name: Mauricio_Barrero Date: December 13, 2004 at 09:27:58 Pacific OS: Alpha 7.2 CPU/Ram: 600Mhz 2G
Comment:
Hi all all, I'm new to the board and I have a quick question: how can I check If a file exists using a conditional (IF..) I've seen that I could use OPEN/error= and put an error label but this not very efficient for what I need. Any other easier way? thanks a lot
Name: KIRBY2000 Date: December 13, 2004 at 11:57:00 Pacific
Reply:
Try the F$SEARCH lexical function.
type: $ HELP LEXICAL F$SEARCH
example: $ START: $ FILE = F$SEARCH("SYS$SYSTEM:*.EXE") $ IF FILE .EQS. "" THEN EXIT $ SHOW SYMBOL FILE $ GOTO START
This command procedure displays the file specifications of the latest version of all .exe files in the SYS$SYSTEM directory. (Only the latest version is returned because an asterisk (*) wildcard character is not used as the version number.) The filespec argument SYS$SYSTEM:*.EXE is surrounded by quotation marks (" ") because it is a character string expression.
Thanks, Glen
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Response Number 2
Name: Mauricio_Barrero Date: December 13, 2004 at 13:22:35 Pacific
Summary: Quick and Dirty but functional......... It doesn't check if the file exist or not $ SET NOON $ OPEN/READ FILE EMPTY_FILE.TXT $ READ/END_OF_FILE=EOF FILE DUMMY_STRING $ !!!! IF NOT EMPTY !!!! $ WRITE S...
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