file access

[Guest_imported]

once creating a file stream, can one access specific lines of the file? I for instance want to open the file, find a line that starts with a certain word and then change that line.....

thanks

 

[Bong]

How about:
set fid [open <filename> r+]
set filelist [split [read $fid] \n]
seek $fid 0 start
foreach line $filelist {
if {[string range $line <range of your word>] != <your word>} {
puts $fid $line
} else {
set line2 <do whatever to that line>
puts $fid $line2
}
close $fid Bob Rashkin
rrashkin@csc.com