CODEWITHSUNDEEP
bashunixsed
user6826691
user6826691

Reputation: 2011

Sed - not working- Nothing is updated and no error

I have the ip-address stored in a parameter called Worker1 and another ip-address is stored in SPARK_MASTER_IP

echo $Worker1
10.100.53.185
echo $SPARK_MASTER_IP
10.100.53.218

I am trying to replace the line discovery.zen.ping.unicast.hosts: [127.0.0.1] like below line.

discovery.zen.ping.unicast.hosts: ["10.100.53.218","10.100.53.185"]

When i try to use the below command using sed, Nothing is updated and no error. Please help me with a solution 

sed -i -e "s/discovery.zen.ping.unicast.hosts: [127.0.0.1]/discovery.zen.ping.unicast.hosts: ["'$SPARK_MASTER_IP'","'$Worker1'"]/g" /etc/elasticsearch/elasticsearch.yml

Thanks!

Upvotes: 0

Views: 80

Answers (1)

Inian
Inian

Reputation: 85570

As discussed over in the comments, escaping the [ will do the trick for you,

WORKER1="10.100.53.185"
SPARK_MASTER_IP="10.100.53.218"

sed -e 's/discovery.zen.ping.unicast.hosts: \["10.100.53.218","10.100.53.185"\]/discovery.zen.ping.unicast.hosts: \["'$WORKER1'","'$SPARK_MASTER_IP'"\]/g' file
discovery.zen.ping.unicast.hosts: ["10.100.53.185","10.100.53.218"]

Add the -i flag for the in-place replacement, once you confirm the replacement to be happening successfully.

Upvotes: 3

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