Rdb: Ruby-Nachbau der MWC /rdb-Werkzeuge

man/blank.man

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+.TH blank "" "" "/rdb Command"
+.PC "Replace all data in a record with spaces"
+\fBblank < \fItableorlist\fR
+.PP
+.II "blank a row"
+.II "row^blank out"
+The command
+.B blank
+replaces with spaces every values in each record of
+.IR tableorlist .
+.PP
+The command
+.B update
+uses
+.B blank
+when it updates a record.
+.B update
+temporarily replaces the record it is updating with a blank record.
+This blank record serves as a record lock; this ensures
+that other users cannot read
+or update the record while it is being updated, but it leaves the
+rest of the table available for use.
+.PP
+Please note that when you pull up a blank record,
+it means that that record is being updated by someone else.
+Come back to it later.
+.SH Example
+To blank out the data fields in table
+.B maillist
+and then
+.B see
+the result, you could type the following:
+.DM
+blank < maillist | see
+.DE
+.PP
+This command produces the following output:
+.DM
+Number^I $
+Name^I               $
+Company^I          $
+Street^I              $
+City^I       $
+State^I    $
+ZIP^I     $
+Phone^I              $
+$
+Number^I $
+Name^I               $
+Company^I             $
+Street^I                            $
+City^I       $
+State^I            $
+ZIP^I         $
+Phone^I    $
+.DE
+.PP
+Note the spaces between the tab (^I) and the dollar sign `$'
+that indicates the end of the line.
+The spaces replaced the
+characters, including spaces, that were in the original records.
+.PP
+Note too that the column names are untouched, so that this
+is a perfectly correct file as far as the
+.B /rdb
+commands are concerned, it just contains no data.
+.SH "See Also"
+.B
+see,
+update
+.R