bash - Replace value from one file to another -


trying figure out way replace value 1 file value of using bash or awk or grep whichever easiest.

example:

file 1 - contains list of docker container images running on node so:

docker/container-name:123456

docker/anothercontainer-differentname:7841216

file 2 - docker compose file in json format field named "image:" contains values this:

image: docker/container-name:latest

image: docker/anothercontainer-differentname:latest

what best way compare 2 files , values file 1 after tag ":" matching name , replace value in file 2 "latest" file 2 shows

image: docker/container-name:123456

container-name:   image: docker/container-name:latest   ports:     - 80     - 50051   mem_limit: 134217727   cpu_shares: 100   environment:     service_name: container-name     consul_server: consul.service.consul:8500/v1/kv/lde/     service_80_check_http: "/health"     service_50051_check_tcp: "true"   depends_on:     - service-name   network_mode: "bridge"

ok have works on yaml file. little bit hacky must say. 

# delimiter optional white space around column awk -f "[ \t\n]*:[ \t\n]*" ' # pass on first file. save array a[containername] = tag nr==fnr {a[$1]=$2; next} # second file process lines contain image /image/ {    # image name contains slash. escape (for sed)    imgname=$2;    sub(/\//,"\\\\/",imgname);    #  print command sed    print  "s/image: "imgname":"$3"/image: "imgname":"a[$2]"/g" } ' file1 file2  | \ # call sed multiple times in place, modifying input file. xargs -i@   sed -i  '@' file2

in action: 

$ cat file1 docker/container-name:123456 docker/anothercontainer-differentname:7841216

file 2 before 

$ cat file2 container-name:   image: docker/container-name:latest container-name:   image: docker/anothercontainer-differentname:latest

file 2 after 

$ cat file2 container-name:   image: docker/container-name:123456 container-name:   image: docker/anothercontainer-differentname:7841216

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