sed
on AIX is not doing what I think it should.
I'm trying to replace multiple spaces with a single space in the output of IOSTAT:
# iostat
System configuration: lcpu=4 drives=8 paths=2 vdisks=0
tty: tin tout avg-cpu: % user % sys % idle % iowait
0.2 31.8 9.7 4.9 82.9 2.5
Disks: % tm_act Kbps tps Kb_read Kb_wrtn
hdisk9 0.2 54.2 1.1 1073456960 436765896
hdisk7 0.2 54.1 1.1 1070600212 435678280
hdisk8 0.0 0.0 0.0 0 0
hdisk6 0.0 0.0 0.0 0 0
hdisk1 0.1 6.3 0.5 63344916 112429672
hdisk0 0.1 5.0 0.2 40967838 98574444
cd0 0.0 0.0 0.0 0 0
hdiskpower1 0.2 108.3 2.3 2144057172 872444176
# iostat | grep hdisk1
hdisk1 0.1 6.3 0.5 63345700 112431123
#iostat|grep "hdisk1"|sed -e"s/[ ]*/ /g"
h d i s k 1 0 . 1 6 . 3 0 . 5 6 3 3 4 5 8 8 0 1 1 2 4 3 2 3 5 4
sed should search & replace (s) multiple spaces (/[ ]*/) with a single space (/ /) for the entire group (/g)... but it's not only doing that... its spacing each character.
What am I doing wrong? I know its got to be something simple... AIX 5300-06
edit: I have another computer that has 10+ hard drives. I'm using this as a parameter to another program for monitoring purposes.
The problem I ran into was that "awk '{print $5}' didn't work because I'm using $1, etc in the secondary stage and gave errors with the Print command. I was looking for a grep/sed/cut version. What seems to work is:
iostat | grep "hdisk1 " | sed -e's/ */ /g' | cut -d" " -f 5
The []s were "0 or more" when I thought they meant "just one". Removing the brackets got it working. Three very good answers really quickly make it hard to choose the "answer".
iostat | grep "hdisk1 " | xargs echo