Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations Mike Lewis on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
How can I awk the current load average without a , ? 0.31 not 0.31, 1
- Thread starter john99999
- Start date
-
1
- #2
- Thread starter
- #3
Why wont this if statement work?
root@server1 [/]# cat ss
#!/bin/sh
a=`uptime | awk -F'[, ]*' '{print $11}'`;
echo "a = $a"
if [ $a -gt 0.2 ]
then
echo "high load"
fi
root@server1 [/]# ./ss
a = 0.19
./ss: [: 0.19: integer expression expected
root@server1 [/]# cat ss
#!/bin/sh
a=`uptime | awk -F'[, ]*' '{print $11}'`;
echo "a = $a"
if [ $a -gt 0.2 ]
then
echo "high load"
fi
root@server1 [/]# ./ss
a = 0.19
./ss: [: 0.19: integer expression expected
- Thread starter
- #4
- Thread starter
- #5
the shells you've mentioned support OONLY interger arithmetic.
here's one of the ways around it:
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
here's one of the ways around it:
Code:
#!/bin/ksh
a=1.72
b=1.71
if [ "$(echo "if (${a} > ${b}) 1" | bc)" -eq 1 ] ; then
echo ">"
else
echo "<"
fi;vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
- Thread starter
- #7
- Thread starter
- #9
I tried it in perl but it doesnt store the right value to $a as it does in bash or cshell:
root@server1 [/]# cat ss4
#!/usr/bin/perl
$a=`uptime | awk -F'[, ]*' '{print $11}'`;
#echo "a = $a"
if ( $a > 5.2 ){
print $a;
}
root@server1 [/]# ./ss4
12:34pm up 29 days, 18:11, 1 user, load average: 0.43, 0.32, 0.33
root@server1 [/]# cat ss4
#!/usr/bin/perl
$a=`uptime | awk -F'[, ]*' '{print $11}'`;
#echo "a = $a"
if ( $a > 5.2 ){
print $a;
}
root@server1 [/]# ./ss4
12:34pm up 29 days, 18:11, 1 user, load average: 0.43, 0.32, 0.33
why are you spawnning 'uptime' pipped to awk from within perl?
wouldn't it be easier to parse the output of uptime natively within perl?
what is the value of '$a' prior to comparison?
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
wouldn't it be easier to parse the output of uptime natively within perl?
what is the value of '$a' prior to comparison?
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
- Thread starter
- #11
sorry, I'm no perl expert - it looked strange seeing awk being used within perl.
someone on this forum will try to answer OR you can post your question at [forum219]
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
someone on this forum will try to answer OR you can post your question at [forum219]
vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+
- Status
