readmin advance usage.
-c : display changed byte
Display altered bytes at the end of any ALT line , after the Tag, "ChgBytes:"
Example:
readmin -c
Output line:
160222 09:17:00 cc 10 stpost Alt STOCK_LOG 1 1002595 ECLIPSE CHAIR YELLOW CODE FABRIC 2609 ChgBytes: 124-125,3076-3077,3172,3333-3334,3336
-f <filename> : specify input log file
Example:
readmin -f log.22feb17-0
-m <logid:offset:datatype>
Search the log file for Alter logs, that changed a paticular field on one type of record.
logid
logid is the control logid which you can easily find out using fdbstat.
following example show logid for STOCK is 9
fdbstat -v /u/cc/comp/stock.dat
Filename flags ssize/ vsize/ bucsiz/ 1stbuc/ # bucs/ lastbuc nulls log release
prelen suflen keysize elsize maxnkey lastnod ok ? id alphalen
stock.dat MASTER 3072 1024 4096 2 0 1147 9 64
offset
offset is the starting byte of the field in the record. which can be found by running align on any dec files in /u/ccr.xx/std/hdrs/
use stock.dec as an example
align /u/ccr.16/std/hdrs/stock.dec
following is a cut down version of the out.
start end no.of decimal datatype field_name byte byte byte /* struct s_sstock */ 0 3 4 0 RECPTR recno 4 5 2 0 BRANCHSIZE active 6 21 16 0 TEXT code 22 87 66 0 FILL old_desc 88 88 1 0 TEXT replen_period 89 89 1 0 TEXT status 90 90 1 0 SHTINT staxcode 91 91 1 0 SHTINT n_dim 92 95 4 0 RECPTR stk_par 96 98 3 0 TEXT st_type 99 104 6 0 TEXT b_unit 105 110 6 0 TEXT s_unit 111 111 1 0 TEXT use_curr_cost 112 115 4 0 RECPTR catptr 116 117 2 0 TYPDATE lastdblogedd 118 119 2 0 TYPTIME lastdblogedt 120 123 4 2 SHTDEC markup 124 127 4 2 SHTDEC supp_cost etc.... /* total size of s_sstock = 3072 */ /* struct s_vstock */ 0 3 4 2 SHTDEC incost 4 7 4 2 SHTDEC l_cost 8 9 2 0 TYPDATE lpdate 10 11 2 0 TYPDATE lastmov 12 35 24 0 FILL vsupp_fill 36 39 4 2 SHTDEC obqty 40 43 4 2 SHTDEC qty_on_ebay 44 47 4 2 SHTDEC qohand etc... /* total size of s_vstock = 1024 */
if the field is in the sstock , or static part of the record the
offset is simply the start byte use supp_cost as as example is 124.
if the field is in the vstock, or the variable part of the record the
offset is the start byte plus the size of the static part
use l_cost as example its 4+3072 = 3076.
datatype
datatype tell the program how to read the field. it can be one of the following
t -- align datatype = TEXT and no.of byte is bigger than 1(for string, e.g. descriptions. address) b -- align datatype = TEXT and no.of byte is 1 (for options) s -- align datatype is one of the following BRANCHSIZE, SMLPTR, SMLDEC, UCOUNT, TYPDATE, TYPTIME or COUNT n -- align datatype is one of the following SHTDEC, RECPTR, EXTDEC THREDEC d -- align datatype = LNGDEC