I suspect you're overthinking this a great deal. Just print your progress to standard error, and the actual data to standard output. stdout will be caught in the variable, stderr will go direct to your console.
You can even do some console-tricks (\r, to go to the beginning of the line, instead of \n, to go to the next line) so its output isn't too spammy.
/dev/stderr is how you tell awk to print to standard error. It has a special meaning to awk (even though some systems do have an actual /dev/stderr these days).
Code:
VAR=$(du -a ./ | awk -F'[/ \t]' '{ T += $1 ; printf("\rChecking %40s", $2) >"/dev/stderr" } END { print "" > "/dev/stderr" ; print T }')
Last edited by Corona688; 10-12-2014 at 04:38 PM..
hi sirs
can u tell the difference between /var/log/syslogs and /var/adm/messages
in my working place i am having two servers.
in one servers messages file is empty and syslog file is going on increasing..
and in another servers message file is going on increasing but syslog file is... (2 Replies)
Hi All,
How do I create /var as LVM type during install? I want my new OS to have /var as LVM so that I could extend it on the fly.
Thanks for any comment you may add. (2 Replies)
why I cannot do this?
prog_name | tee logfile | awk /regexp/ | awk /regexp/ I now this is not elegant code, but am intrigued as to why multiple pipes from tee not allowed. (2 Replies)
HI,
I would like to create the files as
file1.txt
file2.txt
file3.txt
......
.......
.......
filen.txt
in a single unix command, i dont want to use the loops.
n is user specific
Kindly help me in this.
THank you
Jagadeesh (2 Replies)
Dear All,
I am trying to write a Unix Script which fires a sql query. The output of the sql query gives multiple rows. Each row should be saved in a separate Unix File.
The number of rows of sql output can be variable. I am able save all the rows in one file but in separate files.
Any... (14 Replies)
dear all
suppose I have two files file_000 and file_id:
file_000:
blablablabla000blablabla000
000blahblah000blahblah
blah000blahblahfile_id:
001
002
003now, based on file_id, I want to create 3 files; the name of each file would be file_001,file_002,file_003,respectively, and the... (4 Replies)
08:29 < xsi> >{respo,nd}.php bash: {respo,nd}.php: ambiguous redirect
08:31 < geirha> xsi: maybe you want tee
So I was advised to do so. And I can't create two OR MORE files at once with {a,b,c,d,e,f}.php
(which I quickly now need to create and to learn to create in the future to quickly... (2 Replies)
i try to find way to make string concatenation in csh ( sorry this is what i have )
so i found out i can't do :
set string_buff = ""
foreach line("`cat $source_dir/$f`")
$string_buff = string_buff $line
end
how can i do string concatenation? (1 Reply)
I'm on Ubuntu 14.04 and I manually updated my coreutils so that "tee" is now on version 8.27
I was running a script using bash where there is some write to pipe error at some point causing the tee command to exit abruptly while the script continues to run. The newer version of tee seems to prevent... (2 Replies)
Discussion started by: stompadon
2 Replies
LEARN ABOUT DEBIAN
pipebench
pipebench(1)pipebench(1)NAME
pipebench - Shows speed of stdin/stdout communication
SYNOPSIS
pipebench [ -ehqQIoru ] [ -s file | -S file ] [ -b bufsize ]
DESCRIPTION
Measures the speed of stdin/stdout communication.
OPTIONS -h Displays a help message and exits.
-e If an error occurs, exit (breaking the pipe between stdin and stdout. By default an error message is printed to stderr and the pro-
gram continues.
-q Only show summary stats.
-Q Don't show running speed or summary stats. Same as -q -o. Can be used to play with buffer size.
-o Don't show summary.
-b bufsize
Use this buffer size, in bytes.
-r Just show raw speed, no fancy stuff. And no summary.
-s file
Write status to file instead of stderr.
-S file
Write status to file instead of stderr.
-I Use 1kB = 1000B, instead of the default 1024B.
-u Don't convet to units (kilo, Mega, etc...)
EXAMPLES
Benchmark and show progress of backup
# (cd /home/; tar cf - .) | pipebench | (cd /mnt/backup/; tar xf -)
A number to brag to your friends about
$ dd if=/dev/zero bs=80k count=60k 2> /dev/null | ./pipebench -q > /dev/null
BUGS
No known bugs... yet.
SEE ALSO dd(1), cat(1)AUTHOR
Pipebench was written by Thomas Habets <thomas@habets.pp.se>
pipebench 18th Apr, 2003 pipebench(1)