3.1.8 Output Options
These are the options to specify what you want to do out of what a2ps
produces. Only a single destination is possible at a time, i.e., if
ever there are several options `-o', `-P' or `-d', the last one is
-- Option: -o FILE
-- Option: --output=FILE
leave output to file FILE. If FILE is `-', leave output to the
-- Option: --version-control=TYPE
to avoid loosing a file, a2ps offers backup services. This is
enabled when the output file already exists, is regular (that is,
no backup is done on special files such as `/dev/null'), and is
writable (in this case, disabling version control makes a2ps fail
the very same way as if version control was disabled: permission
The type of backups made can be set with the `VERSION_CONTROL'
environment variable, which can be overridden by this option. If
`VERSION_CONTROL' is not set and this option is not given, the
default backup type is `existing'. The value of the
`VERSION_CONTROL' environment variable and the argument to this
option are like the GNU `Emacs' `version-control' variable; they
also recognize synonyms that are more descriptive. The valid
values are (unique abbreviations are accepted):
Never make backups (override existing files).
Always make numbered backups.
Make numbered backups of files that already have them, simple
backups of the others.
Always make simple backups.
-- Option: --suffix=SUFFIX
The suffix used for making simple backup files can be set with the
`SIMPLE_BACKUP_SUFFIX' environment variable, which can be
overridden by this option. If neither of those is given, the
default is `~', as it is in `Emacs'.
-- Option: -P NAME
-- Option: --printer=NAME
send output to printer NAME. See item `Printer:' and `Unknown
printer:' in Note: Your Printers and results of option
`--list=defaults' to see the bindings between printer names and
It is possible to pass additional options to `lpr' or `lp' via the
variable `lp.options', for more information see Note: Pass Options
-- Option: -d
send output to the default printer. See item `DefaultPrinter:' in
Note: Your Printers.
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