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Volume 4, Number 35 -- October 20, 2004

Presenting the CHGATR Command

Hey, Ted:


I had a similar problem to Jim's in "Wanted: Qshell Output in ASCII." Qshell was building EBCDIC files, but he wanted them in ASCII. In my case, a "Wintel" machine's FTP client was putting ASCII files in the Integrated File System, but I preferred EBCDIC files. I found a CL command that solved my problem.

I used the Change Attributes (CHGATR) command. This command, which was introduced in V5R1, can change the CCSID of a file. I used commands like the following to change files from CCSID 819 (the CCSID they were assigned when they were created during an FTP session) to 37 (US English):

CHGATR OBJ('/mydir/myfile.txt') ATR(*CCSID) VALUE(37)

I need to point out that CHGATR does not convert the data in the file to the new CCSID. In my case, I sent a second put command and everything was fine. Here is a portion of an illustrative script:

lcd /temp
cd /mydir
put empty.txt mynewfile.txt
quote rcmd CHGATR OBJ('mynewfile.txt') ATR(*CCSID) VALUE(37)
put myrealpcfile.txt mynewfile.txt

The empty.txt file is not really empty. I had keyed one x into it. Copying it to the IFS created a file with a code page of 819. Then I used the rcmd server command to change the CCSID. Last, I copied the real data to the IFS.

The other ways to change a file's CCSID that were presented in "Wanted: Qshell Output in ASCII" and "More Qshell Output in ASCII" are fine, but I wanted to mention this CL command.

--Ken


Thanks for bringing CHGATR to our command. As you point out, it is a relatively new command.

You can use CHGATR against a single file or a group of files whose names match a pattern. If you specify SUBTREE(*YES), the system will also change objects in subdirectories.

In addition to changing a file's CCSID, CHGATR can change the following properties.


Property Description
*READONLY Whether a file can be changed or deleted.
*HIDDEN Whether a file is displayed in an ordinary directory list.
*PCSYSTEM Whether a file is considered as belonging to a PC.
*PCARCHIVE Whether a file has been changed since the last save by a PC.
*SYSARCHIVE Whether a file has been changed since an iSeries save.
*ALWCKPWRT Whether a stream file can be shared during save-while-active checkpoint processing.
*USECOUNT The number of days an object has been used.
*DISKSTGOPT How the system allocates auxiliary storage for an object.
*MAINSTGOPT How the system allocates main storage for an object.

Be aware that not all options are available in every file system.

To learn more about CHGATR, go to the IBM iSeries Infocenter.

--Ted

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Technical Editors: Howard Arner, Joe Hertvik, Ted Holt,
Shannon O'Donnell, Kevin Vandever
Managing Editor: Shannon Pastore
Contributing Technical Editors: Joel Cochran, Wayne O. Evans, Raymond Everhart,
Bruce Guetzkow, Marc Logemann, David Morris
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THIS ISSUE
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BACK ISSUES

TABLE OF
CONTENTS
Prolong the FTP Experience

Presenting the CHGATR Command

Admin Alert: Cracking the Obscure CWBLM0029 PC5250 Error


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