Accessing Main Storage: CORE › Scan Main Storage

Scan Main Storage

The SCAN and SCAB commands search main storage for specified data. SCAN searches forward through storage, and SCAB searches backward. The command formats let you search from the current CORE display or from a specified location.

• To begin a search at the first byte of the current CORE display, enter:

  CORE=SCANrange,data
  

or

CORE=SCABrange,data

• To begin a search at the location specified as loc, enter:

  CORE=loc=SCANrange,data   
  

or

CORE=loc=SCABrange,data

The search terminates when the first occurrence of the specified data is found or the number of bytes specified in the range have been scanned. Specify the range as a hexadecimal number or a decimal number followed by the letter T.

Examples

These examples show how to search for and replace data in main storage.

• To search for the string STEVE beginning at the location TABLE1, enter:

  CORE='TABLE1'=SCAN1000T,C'STEVE'
  

  The search for STEVE proceeds forward for a maximum of (decimal) 1000 bytes. If STEVE is not found a message displays.

• To search for STEVE starting at TABLE1, and to replace STEVE with the character string CHRIS, enter:

  CORE='TABLE1'=SCAN1000T,C'STEVE'=CHGC'CHRIS'
  

  Note: This command only replaces the first occurrence of STEVE with CHRIS.