Rdb: Ruby-Nachbau der MWC /rdb-Werkzeuge

man/compresss.man

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+.TH compresss "" "" "/rdb Command"
+.PC "Squeeze out all leading and trailing blanks"
+\fBcompresss [-b] < \fItableorlist\fR
+.PP
+.II "table^compress"
+.II "compress table"
+The command
+.B compresss
+removes all leading and trailing blanks from every column or field in
+.IR tableorlist .
+You an use it to save disk space.
+.PP
+Please note that the name \fBcompresss\fR is not a typographical error.
+The command is spelled in this way to avoid collision with the
+COHERENT command
+.BR compress ,
+which behaves very differently from
+.BR compresss .
+.PP
+.B compresss
+is almost the opposite of the command
+.BR justify .
+Your files are not as pretty when compressed as they are when
+justified, but they are smaller \(em
+usually one third the size or less.
+Therefore, they take less disk space and are much faster to process;
+after all,
+most of the time used to execute data-base programs consists
+of moving data from the disk to the memory and, sometimes, back to
+the disk.
+.PP
+Multiple blanks that separate words are left alone.
+.SH Options
+.B compresss
+recognizes the following option:
+.IP \fB\-b\fR
+Drop blank lines.
+Don't use this option with list files!
+.SH Example
+For example, consider table
+.BR oldjournal ,
+which is as follows:
+.DM
+Date     Account   Debit   Credit   Description
+------   -------   -----   ------   -----------
+890102   101       25000            cash from loan
+890102   211.1              25000   loan number #378-14 Bank Amerigold
+890103   150.1     10000            test equipment from Zarkoff
+890103   101        5000            cash payment
+890103   211.2               5000   note payable to Zarkoff Equipment
+890104   130       30000            inventory - parts from CCPSC
+890104   201.1              15000   accounts payable to CCPSC
+890104   101       15000            cash payment to CCPSC for parts
+.DE
+.PP
+After we run the command
+.DM
+	compresss <old.journal | see
+.DE
+.PP
+.B old.journal
+has no extra spaces.
+We prove this by piping the output to the
+.B /rdb
+command
+.BR see ,
+which displays the following output:
+.DM
+Date^IAccount^IDebit^ICredit^IDescription$
+----^I-------^I-----^I------^I-----------$
+890102^I101^I25000^I^Icash from loan$
+890102^I211.1^I^I25000^Iloan number #378-14 Bank Amerigold$
+890103^I150.1^I10000^I^Itest equipment from Zarkoff$
+890103^I101^I^I5000^Icash payment$
+890103^I211.2^I^I5000^Inote payable to Zarkoff Equipment$
+890104^I130^I30000^I^Iinventory - parts from CCPSC$
+890104^I201.1^I^I15000^Iaccounts payable to CCPSC$
+890104^I101^I^I15000^Icash payment to CCPSC for parts$
+.DE
+.PP
+Note that
+.B see
+turns all of the tabs into \fB^I\fR
+and puts a dollar sign `$' at the end of each row to show us that
+there are no spaces at the end.
+.SH "See Also"
+.B
+justify,
+rmblank
+.R
+.SH Notes
+Do not confuse this command with the COHERENT system's command
+.BR compress ,
+which produces binary output that cannot be read by any
+.B /rdb
+command.