Kbase P50544: How to read the last line from a text file using tail ?
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
12/30/2003 |
|
Status: Unverified
GOAL:
How to read the last line from a text file using tail ?
FIX:
Progress does not have utility/function to achieve/fullfill this task directly.
The following example is from Windows, it can be run on UNIX after changing the path's as well.
DEF VAR t AS CHAR NO-UNDO.
DEF STREAM s.
OS-COMMAND SILENT ("d:\tl.cmd").
INPUT STREAM s FROM d:\lastline.txt.
IMPORT STREAM s UNFORMATTED t.
INPUT STREAM s CLOSE.
MESSAGE t VIEW-AS ALERT-BOX.
The "t" variable contains content of the last line.
"tl.cmd" is a windows batch which contains 1 line
tail -1 "textfile" > d:\lastline.txt