Assigning a variable within a while loop in shell script
I am trying to assign a variable within a while loop and the script hangs during the read statement.
while read -r port 60720 60721 60722 60723 60724
here is the code:
qmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | awk -F( '{ print $2}'| awk -F) '{ print $1}')
numqmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | wc -l)
strqmgrs=(${qmgrs})
i=$numqmgrs
arrayindex=0
while ((i != 0))
do
while read -r port 60720 60721 60722 60723 60724 ;do
qmgrname=${strqmgrs[$arrayindex]}
echo "
this is the $port for the $qmgrname”
i=$((i-1))
arrayindex=$((arrayindex+1))
done
done
desired output:
this is the 60720 for the apple”
this is the 60721 for the pear”
this is the 60722 for the mango”
this is the 60723 for the grape”
this is the 60724 for the blueberry”
linux shell-script ksh
asked 4 hours ago
MO12MO12
81210
add a comment |
I am trying to assign a variable within a while loop and the script hangs during the read statement.
while read -r port 60720 60721 60722 60723 60724
here is the code:
qmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | awk -F( '{ print $2}'| awk -F) '{ print $1}')
numqmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | wc -l)
strqmgrs=(${qmgrs})
i=$numqmgrs
arrayindex=0
while ((i != 0))
do
while read -r port 60720 60721 60722 60723 60724 ;do
qmgrname=${strqmgrs[$arrayindex]}
echo "
this is the $port for the $qmgrname”
i=$((i-1))
arrayindex=$((arrayindex+1))
done
done
desired output:
this is the 60720 for the apple”
this is the 60721 for the pear”
this is the 60722 for the mango”
this is the 60723 for the grape”
this is the 60724 for the blueberry”
linux shell-script ksh
asked 4 hours ago
MO12MO12
81210
Whatkshare you using?ksh93?
– Kusalananda
4 hours ago
1
Is thatwhile read -r port 60720 60721 60722 60723 60724supposed to befor port in 60720 60721 60722 60723 60724?
– roaima
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago
add a comment |
I am trying to assign a variable within a while loop and the script hangs during the read statement.
while read -r port 60720 60721 60722 60723 60724
here is the code:
qmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | awk -F( '{ print $2}'| awk -F) '{ print $1}')
numqmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | wc -l)
strqmgrs=(${qmgrs})
i=$numqmgrs
arrayindex=0
while ((i != 0))
do
while read -r port 60720 60721 60722 60723 60724 ;do
qmgrname=${strqmgrs[$arrayindex]}
echo "
this is the $port for the $qmgrname”
i=$((i-1))
arrayindex=$((arrayindex+1))
done
done
desired output:
this is the 60720 for the apple”
this is the 60721 for the pear”
this is the 60722 for the mango”
this is the 60723 for the grape”
this is the 60724 for the blueberry”
linux shell-script ksh
asked 4 hours ago
MO12MO12
81210
I am trying to assign a variable within a while loop and the script hangs during the read statement.
while read -r port 60720 60721 60722 60723 60724
here is the code:
qmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | awk -F( '{ print $2}'| awk -F) '{ print $1}')
numqmgrs=$($MQ_INSTALL_PATH/bin/dspmq | grep QMNAME | wc -l)
strqmgrs=(${qmgrs})
i=$numqmgrs
arrayindex=0
while ((i != 0))
do
while read -r port 60720 60721 60722 60723 60724 ;do
qmgrname=${strqmgrs[$arrayindex]}
echo "
this is the $port for the $qmgrname”
i=$((i-1))
arrayindex=$((arrayindex+1))
done
done
desired output:
this is the 60720 for the apple”
this is the 60721 for the pear”
this is the 60722 for the mango”
this is the 60723 for the grape”
this is the 60724 for the blueberry”
linux shell-script ksh
linux shell-script ksh
asked 4 hours ago
MO12MO12
81210
asked 4 hours ago
MO12MO12
81210
edited 3 hours ago
MO12
asked 4 hours ago
MO12MO12
81210
asked 4 hours ago
MO12MO12
81210
asked 4 hours ago
MO12MO12
81210
81210
Whatkshare you using?ksh93?
– Kusalananda
4 hours ago
1
Is thatwhile read -r port 60720 60721 60722 60723 60724supposed to befor port in 60720 60721 60722 60723 60724?
– roaima
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago
add a comment |
Whatkshare you using?ksh93?
– Kusalananda
4 hours ago
1
Is thatwhile read -r port 60720 60721 60722 60723 60724supposed to befor port in 60720 60721 60722 60723 60724?
– roaima
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago
What
ksh are you using? ksh93?– Kusalananda
4 hours ago
What
ksh are you using? ksh93?– Kusalananda
4 hours ago
1
1
Is that
while read -r port 60720 60721 60722 60723 60724 supposed to be for port in 60720 60721 60722 60723 60724?– roaima
3 hours ago
Is that
while read -r port 60720 60721 60722 60723 60724 supposed to be for port in 60720 60721 60722 60723 60724?– roaima
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago
add a comment |
1 Answer
1
active
oldest
votes
It looks as if you'd like to pair a static list of port numbers with server names that you get from a command.
Do this instead:
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=0
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -lt "${#ports[@]}" ]; do
printf 'Port on %s is %dn' "$server" "${ports[i]}"
i=$(( i+1 ))
done
This is essentially what you were trying to do, but you used two nested loops rather than a single loop with a combined condition. The code is also reading the server names directly from the command pipeline that produces these without storing them in an intermediate array.
If you want to hand out the port numbers in the opposite order, use
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=${#ports[@]}
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -gt 0 ]; do
i=$(( i-1 ))
printf 'Port on %s is %dn' "$server" "${ports[i]}"
done
The ${#ports[@]} expression will in all cases above expand to the number of elements in the ports array.
The sed command
sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }'
will extract the string within the first parenthesis on the lines that contain the string QMNAME. It could also be written
sed -n '/QMNAME/{ s/.*(//; s/).*//p; }'
answered 3 hours ago
KusalanandaKusalananda
135k17255420
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It looks as if you'd like to pair a static list of port numbers with server names that you get from a command.
Do this instead:
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=0
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -lt "${#ports[@]}" ]; do
printf 'Port on %s is %dn' "$server" "${ports[i]}"
i=$(( i+1 ))
done
This is essentially what you were trying to do, but you used two nested loops rather than a single loop with a combined condition. The code is also reading the server names directly from the command pipeline that produces these without storing them in an intermediate array.
If you want to hand out the port numbers in the opposite order, use
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=${#ports[@]}
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -gt 0 ]; do
i=$(( i-1 ))
printf 'Port on %s is %dn' "$server" "${ports[i]}"
done
The ${#ports[@]} expression will in all cases above expand to the number of elements in the ports array.
The sed command
sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }'
will extract the string within the first parenthesis on the lines that contain the string QMNAME. It could also be written
sed -n '/QMNAME/{ s/.*(//; s/).*//p; }'
answered 3 hours ago
KusalanandaKusalananda
135k17255420
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
add a comment |
It looks as if you'd like to pair a static list of port numbers with server names that you get from a command.
Do this instead:
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=0
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -lt "${#ports[@]}" ]; do
printf 'Port on %s is %dn' "$server" "${ports[i]}"
i=$(( i+1 ))
done
This is essentially what you were trying to do, but you used two nested loops rather than a single loop with a combined condition. The code is also reading the server names directly from the command pipeline that produces these without storing them in an intermediate array.
If you want to hand out the port numbers in the opposite order, use
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=${#ports[@]}
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -gt 0 ]; do
i=$(( i-1 ))
printf 'Port on %s is %dn' "$server" "${ports[i]}"
done
The ${#ports[@]} expression will in all cases above expand to the number of elements in the ports array.
The sed command
sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }'
will extract the string within the first parenthesis on the lines that contain the string QMNAME. It could also be written
sed -n '/QMNAME/{ s/.*(//; s/).*//p; }'
answered 3 hours ago
KusalanandaKusalananda
135k17255420
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
add a comment |
It looks as if you'd like to pair a static list of port numbers with server names that you get from a command.
Do this instead:
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=0
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -lt "${#ports[@]}" ]; do
printf 'Port on %s is %dn' "$server" "${ports[i]}"
i=$(( i+1 ))
done
This is essentially what you were trying to do, but you used two nested loops rather than a single loop with a combined condition. The code is also reading the server names directly from the command pipeline that produces these without storing them in an intermediate array.
If you want to hand out the port numbers in the opposite order, use
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=${#ports[@]}
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -gt 0 ]; do
i=$(( i-1 ))
printf 'Port on %s is %dn' "$server" "${ports[i]}"
done
The ${#ports[@]} expression will in all cases above expand to the number of elements in the ports array.
The sed command
sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }'
will extract the string within the first parenthesis on the lines that contain the string QMNAME. It could also be written
sed -n '/QMNAME/{ s/.*(//; s/).*//p; }'
answered 3 hours ago
KusalanandaKusalananda
135k17255420
It looks as if you'd like to pair a static list of port numbers with server names that you get from a command.
Do this instead:
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=0
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -lt "${#ports[@]}" ]; do
printf 'Port on %s is %dn' "$server" "${ports[i]}"
i=$(( i+1 ))
done
This is essentially what you were trying to do, but you used two nested loops rather than a single loop with a combined condition. The code is also reading the server names directly from the command pipeline that produces these without storing them in an intermediate array.
If you want to hand out the port numbers in the opposite order, use
PATH=$MQ_INSTALL_PATH/bin:$PATH
ports=( 60720 60721 60722 60723 60724 )
i=${#ports[@]}
dspmq | sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }' |
while read -r server && [ "$i" -gt 0 ]; do
i=$(( i-1 ))
printf 'Port on %s is %dn' "$server" "${ports[i]}"
done
The ${#ports[@]} expression will in all cases above expand to the number of elements in the ports array.
The sed command
sed -n '/QMNAME/{ s/.*(([^)]*)).*/1/p; }'
will extract the string within the first parenthesis on the lines that contain the string QMNAME. It could also be written
sed -n '/QMNAME/{ s/.*(//; s/).*//p; }'
answered 3 hours ago
KusalanandaKusalananda
135k17255420
edited 2 hours ago
answered 3 hours ago
KusalanandaKusalananda
135k17255420
answered 3 hours ago
KusalanandaKusalananda
135k17255420
answered 3 hours ago
KusalanandaKusalananda
135k17255420
135k17255420
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
add a comment |
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
port list is static, but not the server list. I comverted to static list for sake of simplicity..Thats the reason to use the numqmgrs as a counter to end the loop when the count is 0.
– MO12
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
@MO12 Hmm... You will have to update your question with some actual code to show the problem. We could possibly help you get that current code working, but it would be assuming a static list of servers. If that is not what you have, then the corrected code will still be wrong for you. Are you, for example reading the server names from a file?
– Kusalananda
3 hours ago
1
1
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
updated my question. I am deriving the qmgrname and numqmgr from output of another command
– MO12
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
@MO12 See update answer.
– Kusalananda
3 hours ago
add a comment |
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What
kshare you using?ksh93?– Kusalananda
4 hours ago
1
Is that
while read -r port 60720 60721 60722 60723 60724supposed to befor port in 60720 60721 60722 60723 60724?– roaima
3 hours ago
@Kusalananda yes thats right ksh93
– MO12
3 hours ago
@roaima you are right. script hangs. for loop didnt work either. Its not setting the port value using for as you suggested
– MO12
3 hours ago