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

Exit Values
Related Information
iconv, ls
txtflag indicates whether this field is turned ON, OFF, binary or untagged.
Character Code Set / CCSID indicates whether the stored codeset is valid, invalid,
or does not exist. Candidate for Automatic Conversion indicates whether this file
is a candidate for automatic conversion.
Table 4. Possible txtflag / CCSID Combinations
txtflag Character Code Set / CCSID Candidate for Automatic
Conversion
t (on) Defined Yes (text file)
t (on) Defined No
b (off) –– No
m (off) Defined No (mixed data)
–– (off) –– No
0 Successful completion
1 chtag failed to change the tag of a specified file for the following reasons:
v Calling process does not have appropriate privileges to change file
attributes
v Invalid txtflag / Character Code Set combination was issued
2 Incorrect command line syntax
cksum — Calculate and write checksums and byte counts
Format
Description
Options
cksum [–ciprtT] [file ...]
cksum calculates and displays a checksum for each input file. (A checksum is an
error-checking technique used by many programs as a quick way to compare files
that have been moved from one location to another to ensure that no data has
been lost.) It also displays the number of 8-bit bytes in each file.
If you do not specify any files on the command line, or if you specify – as the
filename, cksum reads the standard input (stdin).
The output has the form:
checksum bytecount filename
cksum can calculate checksums in a variety of ways. The default is compatible with
the POSIX.2 standard. You can specify other algorithms with the following options.
The POSIX standard does not recognize these algorithms; they are provided for
compatibility with the UNIX sum command.
–c Uses a standard 16-bit cyclic redundancy check (CRC-16).
chtag
Chapter 2. Shell command descriptions 135