a3global
asked on
Streamline a For loop in Ksh
I wrote a for loop script in KSH which is working absolutely file, The code is below
##########################
echo " Output of the current SEA's Setup "
ssh -n -x -2 $VIOA "lsdev -Cc adapter" | grep -i shared | awk '{print $1}' > $VIOA.seas
ssh -n -x -2 $VIOB "lsdev -Cc adapter" | grep -i shared | awk '{print $1}' > $VIOB.seas
for i in $VIOA $VIOB
do
echo "$i"
for j in `cat $i.seas`
do
a=`ssh -n -x -2 $i "entstat -d $j" | egrep -i "primary|backup"| grep State`
b=`ssh -n -x -2 $i "entstat -d $j" | egrep -i "VLAN Tag IDs" | grep -v None`
echo "$j($b) $a"
done
done
For your reference
# cat $VIOA.seas
ent33
ent34
ent35
The output is something like...
How do I efficiently write this code so that I dont get the empty lines, If we can do this in While, How can we do this..
Thanks
##########################
echo " Output of the current SEA's Setup "
ssh -n -x -2 $VIOA "lsdev -Cc adapter" | grep -i shared | awk '{print $1}' > $VIOA.seas
ssh -n -x -2 $VIOB "lsdev -Cc adapter" | grep -i shared | awk '{print $1}' > $VIOB.seas
for i in $VIOA $VIOB
do
echo "$i"
for j in `cat $i.seas`
do
a=`ssh -n -x -2 $i "entstat -d $j" | egrep -i "primary|backup"| grep State`
b=`ssh -n -x -2 $i "entstat -d $j" | egrep -i "VLAN Tag IDs" | grep -v None`
echo "$j($b) $a"
done
done
For your reference
# cat $VIOA.seas
ent33
ent34
ent35
The output is something like...
sysvio118a
ent33(VLAN Tag IDs: 3166) State: PRIMARY
ent35(VLAN Tag IDs: 183 199 215 909 916 919) State: PRIMARY
ent36(VLAN Tag IDs: 2036 3052) State: PRIMARY
sysvio118b
ent33(VLAN Tag IDs: 3166) State: BACKUP
ent35(VLAN Tag IDs: 183 199 215 909 916 919) State: BACKUP
ent36(VLAN Tag IDs: 2036 3052) State: BACKUPHow do I efficiently write this code so that I dont get the empty lines, If we can do this in While, How can we do this..
Thanks
ASKER CERTIFIED SOLUTION
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Just for completeness - here's the "while" loop.
Please note that using "while" or "for" has no influence on those empty lines,
and please note, too, that the "-n" flag of "ssh" is mandatory with "while read ..." but not necessarily with " for ... in ..."
while read j
do
a=`ssh -n -x -2 $i "entstat -d $j" 2>/dev/null | egrep -i "primary|backup"| grep State`
b=`ssh -n -x -2 $i "entstat -d $j" 2>/dev/null | egrep -i "VLAN Tag IDs" | grep -v None`
### OR
### a=`ssh -n -x -2 $i "entstat -d $j" 2>&1 | egrep -i "primary|backup"| grep State`
### b=`ssh -n -x -2 $i "entstat -d $j" 2>&1 | egrep -i "VLAN Tag IDs" | grep -v None`
echo "$j($b) $a"
done < $i.seas
Thx for the points!
Please note that using "while" or "for" has no influence on those empty lines,
and please note, too, that the "-n" flag of "ssh" is mandatory with "while read ..." but not necessarily with " for ... in ..."
while read j
do
a=`ssh -n -x -2 $i "entstat -d $j" 2>/dev/null | egrep -i "primary|backup"| grep State`
b=`ssh -n -x -2 $i "entstat -d $j" 2>/dev/null | egrep -i "VLAN Tag IDs" | grep -v None`
### OR
### a=`ssh -n -x -2 $i "entstat -d $j" 2>&1 | egrep -i "primary|backup"| grep State`
### b=`ssh -n -x -2 $i "entstat -d $j" 2>&1 | egrep -i "VLAN Tag IDs" | grep -v None`
echo "$j($b) $a"
done < $i.seas
Thx for the points!
ASKER