it is ALMOST perfect except when I cut the fields you will see the date is cut as two fields. One is FEB, the other is 6. What happens is a tab now gets inserted between FEB and 6 and I want these two fields together with only a space. Here is the output that happens:
This is why I wanted to know the output of who. It's much harder to fix this after you process it than to get it right in the first place! But since you just plain won't, this hack might do:
Code:
who | grep s132a | cut -d' ' -f1,3,11,13,14 | while read A B C D
do
echo -e "${A}\t${B}\t${C}\t${D}"
done
---------- Post updated at 12:25 PM ---------- Previous update was at 12:24 PM ----------
This might be a simpler way:
Code:
who | grep s132a | cut -d' ' -f1,3,11,13,14 --output-delimiter='\t'
which if it works, the parameter --output-delimiter='\t' could replace
Code:
cut ... | tr ' ' '\t'
in most places.
Last edited by Corona688; 02-06-2011 at 02:30 PM..
Sorry. Here is the pure output of the who command. There must be a simple way to make the headers line up over the fields. Trying to figure it out with another book I just went out and bought also.
Code:
[b1245~]$ who
b13323x pts/1 Feb 6 11:21 (c-6-30-132)
b245645 pts/2 Feb 6 12:36 (c-2-2-143)
b534453 pts/3 Feb 6 12:07 (c-7-24-6)]
When I dont use grep I get it to work fine like this:
What Operating System and version do you have? (There is much variation in "who").
What Shell do you use?
Though I can't think of a "who" which outputs the terminal address in the posted format, nothing surprises me.
In most O/S the "who" command (with no parameters) does not give the address of the calling computer. You normally need "who -u" or "who -R".
Assuming you have a fairly mainstream O/S I would expect "who -s" to list only the fields you require. The command "who -sH" should put standard headings on the columns (but not the ones you require).
Beware that because we are in the early part of the month the day-of-month is a single digit. To keep the headings in consistent alignment you may need an additional space when compared with the example in Post #1 .
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November 4,2005 17:04:31 EST Wednesday (1 Reply)
