CODEWITHSUNDEEP
regexsed
Mahmoud Emam
Mahmoud Emam

Reputation: 1527

sed command and grouping

I have a file called test and it contains:

EMS_INSTANCES_DIR=/WEB_DATA/home/edofc24/EMS-INSTANCES/async
EMS_SHARED_CONFIG=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/config
EMS_SHARED_DATA=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/data
EMS_JMS_PORT=15244
EMS_INTERFACE=tcp://adecpcas:15244
EMS_KEYS=/WEB_DATA/home/edofc24/EMS-INSTANCES/keys

and I want to change the path after = to /test/path

I use sed to do that:

sed 's/\(^EMS_[SIJ].*\=\)\(\/.*[a-z]$\)/\1\/test/path/' test

but no changes happened, why?.

Upvotes: 0

Views: 75

Answers (1)

Kent
Kent

Reputation: 195179

sed 's:=/.*:=/test/path:' file

example:

kent$  echo "EMS_INSTANCES_DIR=/WEB_DATA/home/edofc24/EMS-INSTANCES/async
EMS_SHARED_CONFIG=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/config
EMS_SHARED_DATA=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/data
EMS_JMS_PORT=15244
EMS_INTERFACE=tcp://adecpcas:15244"|sed 's:=/.*:=/test/path:'
EMS_INSTANCES_DIR=/test/path
EMS_SHARED_CONFIG=/test/path
EMS_SHARED_DATA=/test/path
EMS_JMS_PORT=15244
EMS_INTERFACE=tcp://adecpcas:15244

if you want to change in place, add -i

EDIT for the comment:

sed 's@\(^EMS_[SIJ].*=/\).*@\1test/path/@' file

with same example:

kent$  echo "EMS_INSTANCES_DIR=/WEB_DATA/home/edofc24/EMS-INSTANCES/async
EMS_SHARED_CONFIG=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/config
EMS_SHARED_DATA=/WEB_DATA/home/edofc24/EMS-INSTANCES/async/shared/data
EMS_JMS_PORT=15244
EMS_INTERFACE=tcp://adecpcas:15244"|sed 's@\(^EMS_[SIJ].*=/\).*@\1test/path/@'
EMS_INSTANCES_DIR=/test/path/
EMS_SHARED_CONFIG=/test/path/
EMS_SHARED_DATA=/test/path/
EMS_JMS_PORT=15244
EMS_INTERFACE=tcp://adecpcas:15244

Upvotes: 1

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