z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

Options
txtflag = ON indicates the file has uniformly encoded text data
txtflag = OFF indicates the file has non-uniformly encoded text data
Only files with txtflag = ON and a valid codeset are candidates for automatic
conversion. If txtflag = OFF and a codeset is associated with it, automatic
conversion will not take effect. However, user applications can take advantage of
the associated codeset information and perform code set conversion by themselves.
For information about enabling automatic conversion, see the ″Using Enhanced
ASCII Functionality″ topic of z/OS UNIX System Services Planning.
–b Indicates that the file contains only binary (non-uniformly encoded) data.
Automatic conversion is disabled with this option.
–b is mutually exclusive with the –c, –m, –t, or –r options.
–c codeset
Allows the user to modify the codeset associated with the file. codeset can
be a character code set name known to the system, or the numeric coded
character set identifier (CCSID) (if a numeric codeset name exists, the
CCSID associated with that name will be used). –c is mutually exclusive
with the –r and –b options.
–h Does not change file tag information if the file is a symbolic link (or an
external link).
–m Indicates that the file contains mixed text and binary data. The data is not
uniformly encoded, but to identify the encoding of portions of the file that
are text, this option allows the specifications of a codeset with the –c
option. This option sets txtflag = OFF. When used without –c, the existing
character codeset associated with the file is retained.
Automatic conversion is disabled with this option. However, user
applications can independently convert any text data residing in the file by
knowing the codeset associated with it. –m is mutually exclusive with the
–b, –t and –r options.
–p Prints file tag information associated with a file. If no codeset name is
associated with the CCSID in the file tag, the numeric CCSID will be
presented instead.
Sample output looks like:
t IBM-1047 T=on file1
- untagged T=on file2
b binary T=off file3
m ISO-8859-1 T=off file4
- untagged T=off file5
b binary T=on file6
Where:
t = text
b = binary
m = mixed
– = untagged
chtag
Chapter 2. Shell command descriptions 133