Dear Rodolfo J. Paiz I have another queston?
I would like to display because It takes too long to read the latest when our messages is very big > Jan 24 09:09:26 syslogd 1.4-0: restart. > Jan 24 08:09:24 syslog: syslogd startup succeeded > Jan 24 07:09:24 syslog: klogd startup succeeded not > Jan 24 07:09:24 syslogd 1.4-0: restart. > Jan 24 08:09:24 syslog: syslogd startup succeeded > Jan 24 09:09:24 syslog: klogd startup succeeded In fact, why don't have tail -r this function? Thank you --- "Rodolfo J. Paiz" <[EMAIL PROTECTED]> wrote: > At 1/24/2002 02:08 PM -0500, you wrote: > >But why two commands take different results > >and last one doesn't apply it? > > Because I made a mistake. :) > > The second should be: > > # grep "`date +'%b %e'`" /var/log/messages | less > > >Second: doesn't work, start from Jan 20 > >[root@ log]# grep `date +"%b %e"` /var/log/messages > | > >less|more > > The mistake is that the `date` stuff in between the > backticks is replaced > *only* by the result of the command. So that command > becomes: > > (wrong) > # grep Jan 24 /var/log/messages | less > > grep is only expecting one argument, so it uses > "Jan" as the search string > and then thinks "24" and "/var/log/messages" are the > files to search. No > file named "24" exists, so it issues an error and > then goes on to the > second file. All the lines in the second file > contain the string "Jan" so > the entire file is given to you. > > I used double quotes on the outside and single > quotes on the inside so that > the shell wouldn't be confused about which quote is > paired with which other. > > Note that "less" does the same thing as "more", so > you don't need to use > both. Pick one of the two; less does a little extra, > but more is easier to > learn for newbies. > > The reason I gave you the second command is because > you might want to put > it into a short script, and it will work every day > without you typing > anything specific. > > > -- > Rodolfo J. Paiz > [EMAIL PROTECTED] > > > > _______________________________________________ > Redhat-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/redhat-list ______________________________________________________________________ Web-hosting solutions for home and business! http://website.yahoo.ca _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
