Differences between current version and predecessor to the previous major change of KnowledgeBase/Scripts/diskstats.sh.
Other diffs: Previous Revision, Previous Author
| Newer page: | version 8 | Last edited on Tuesday, 23 February 2010 5:59:42 | by CyberLeo | |
| Older page: | version 6 | Last edited on Tuesday, 20 October 2009 8:22:14 | by CyberLeo | Revert |
@@ -1,33 +1,49 @@
<code brush="bash">
#!/bin/bash
+# Digest a single number into a pretty number
pretty(){
- # Digest a single number into a pretty number
+ # Initialization
num=${1:-0}
zero=0
+ tera_mag=1099511627776
+ giga_mag=1073741824
+ mega_mag=1048576
+ kilo_mag=1024
+ byte_mag=1
- tera=$(( $num / 1099511627776
))
- num=$(( $num % 1099511627776
))
- giga=$(( $num / 1073741824
))
- num=$(( $num % 1073741824
))
- mega=$(( $num / 1048576
))
- num=$(( $num % 1048576
))
- kilo=$(( $num / 1024
))
- num=$(( $num % 1024
))
+ # Scale down to appropriate magnitude
+
tera=$(( $num / ${tera_mag}
))
+ num=$(( $num % ${tera_mag}
))
+ giga=$(( $num / ${giga_mag}
))
+ num=$(( $num % ${giga_mag}
))
+ mega=$(( $num / ${mega_mag}
))
+ num=$(( $num % ${mega_mag}
))
+ kilo=$(( $num / ${kilo_mag}
))
+ num=$(( $num % ${kilo_mag}
))
byte=${num:-0}
+ # Select proper magnitude and suffix
one=byte && two=zero && sign=B
- [ $kilo -gt 0 ] && one=kilo && two=byte && sign
=kB
- [ $mega -gt 0 ] && one=mega && two=kilo && sign
=MB
- [ $giga -gt 0 ] && one=giga && two=mega && sign
=GB
- [ $tera -gt 0 ] && one=tera && two=giga && sign
=TB
+ [ $kilo -gt 0 ] && one=kilo && two=byte && suffix
=kB
+ [ $mega -gt 0 ] && one=mega && two=kilo && suffix
=MB
+ [ $giga -gt 0 ] && one=giga && two=mega && suffix
=GB
+ [ $tera -gt 0 ] && one=tera && two=giga && suffix
=TB
+ # Compute float
+ whole=$(eval echo \$$one)
+ part=$(eval echo \$$two)
+ num=$(printf "%s.%s" "${whole}" "${part}")
+
+ # Compute printf format
fmt="%0.2f%s\n"
- [ "${sign
}" = "B"
] && fmt="%0d
%s\n"
- num=
$(eval echo \$$one
.\$$two)
- [ "$two" = "zero" ] && num
=$(eval echo
\$$one)
- printf "${fmt}" ${num} $sign
+ [ "${whole
}" -gt 9
] && fmt="%0.1f
%s\n"
+ [ "
${whole}" -gt 99 ] && fmt="%0
.0f%s
\n"
+ [ "${
two}
" = "zero" ] && fmt
="%0.0f%s
\n"
+
+ # Generate result
+ printf "${fmt}"
"${num}" "
${suffix}"
}
digest(){
dev="${1}"
current version
#!/bin/bash
# Digest a single number into a pretty number
pretty(){
# Initialization
num=${1:-0}
zero=0
tera_mag=1099511627776
giga_mag=1073741824
mega_mag=1048576
kilo_mag=1024
byte_mag=1
# Scale down to appropriate magnitude
tera=$(( $num / ${tera_mag} ))
num=$(( $num % ${tera_mag} ))
giga=$(( $num / ${giga_mag} ))
num=$(( $num % ${giga_mag} ))
mega=$(( $num / ${mega_mag} ))
num=$(( $num % ${mega_mag} ))
kilo=$(( $num / ${kilo_mag} ))
num=$(( $num % ${kilo_mag} ))
byte=${num:-0}
# Select proper magnitude and suffix
one=byte && two=zero && sign=B
[ $kilo -gt 0 ] && one=kilo && two=byte && suffix=kB
[ $mega -gt 0 ] && one=mega && two=kilo && suffix=MB
[ $giga -gt 0 ] && one=giga && two=mega && suffix=GB
[ $tera -gt 0 ] && one=tera && two=giga && suffix=TB
# Compute float
whole=$(eval echo \$$one)
part=$(eval echo \$$two)
num=$(printf "%s.%s" "${whole}" "${part}")
# Compute printf format
fmt="%0.2f%s\n"
[ "${whole}" -gt 9 ] && fmt="%0.1f%s\n"
[ "${whole}" -gt 99 ] && fmt="%0.0f%s\n"
[ "${two}" = "zero" ] && fmt="%0.0f%s\n"
# Generate result
printf "${fmt}" "${num}" "${suffix}"
}
digest(){
dev="${1}"
if [ ! -d "/sys/block/${dev}" ]
then
return 1
fi
eval $(printf 'old_r=$old_r_%s old_w=$old_w_%s' "${dev}" "${dev}")
[ -z "${old_r}" ] && old_r=0
[ -z "${old_w}" ] && old_w=0
eval $(awk '{print "cur_r=" $3 " cur_w=" $7}' /sys/block/${dev}/stat)
dif_r=$(( (${cur_r} - ${old_r}) * 512 ))
dif_w=$(( (${cur_w} - ${old_w}) * 512 ))
eval $(printf "old_r_%s=%u old_w_%s=%u" "${dev}" "${cur_r}" "${dev}" "${cur_w}")
printf "%s: R: %s W: %s \033[K\n" "${dev}" "$(pretty ${dif_r})" "$(pretty ${dif_w})"
}
while true
do
printf "\033[0;0H" # Cursor to upper left
for I in /sys/block/sd?
do
digest "$(basename "${I}")"
done
printf "\033[0J" # Clear the rest of the page
sleep 1
done