How to sort by name `docker service ls`

I'm using Docker Swarm 1.13.1 and it would be very practical to list services by name (A-Z).

I don't think Docker support this feat by natively so I expect some awk, sort and other little hacks.

So far this is the closest I can get:

root@N01-par1-dev-e:~/deploy-setup# docker service ls | sort -k2,2 -k1
yru8n6zxmp08  consul            global      4/4       consul:latest
1lb98n83fttr  mysql             replicated  1/1       devmtl/percona-fire:5.7.16-10-1
ID            NAME              MODE        REPLICAS  IMAGE
i75t4zef8x8c  papertrail        global      4/4       gliderlabs/logspout:latest
4s14t7f13fp8  portainer         replicated  1/1       portainer/portainer:1.11.3
8wojufyq3dwn  resilio           global      4/4       devmtl/resilio-fire:2.4.4-alpine-0
vn8fhhfvb6pw  sematext          global      4/4       sematext/sematext-agent-docker:1.31.11
mwxtlff6jyl5  thm-s0001-iamfoo  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
o8p4q85axkwy  thm-s0002-iambar  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
wedrfqzkg3zp  thm-s0003-caply   replicated  1/1       devmtl/nginx-fire:1.10.3-alpine-0
ql9yapc0brnk  thm-s0003-valgo   replicated  1/1       devmtl/caddy:0.9.5-alpine-0
vu3jhyo71oos  traefik           replicated  1/1       traefik:v1.1.2-alpine

or ...

root@N01-par1-dev-e:~/deploy-setup# docker service ls | tail -n +2 |  sort -k2,2 -k1
yru8n6zxmp08  consul            global      4/4       consul:latest
1lb98n83fttr  mysql             replicated  1/1       devmtl/percona-fire:5.7.16-10-1
i75t4zef8x8c  papertrail        global      4/4       gliderlabs/logspout:latest
4s14t7f13fp8  portainer         replicated  1/1       portainer/portainer:1.11.3
8wojufyq3dwn  resilio           global      4/4       devmtl/resilio-fire:2.4.4-alpine-0
vn8fhhfvb6pw  sematext          global      4/4       sematext/sematext-agent-docker:1.31.11
mwxtlff6jyl5  thm-s0001-iamfoo  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
o8p4q85axkwy  thm-s0002-iambar  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
wedrfqzkg3zp  thm-s0003-caply   replicated  1/1       devmtl/nginx-fire:1.10.3-alpine-0
ql9yapc0brnk  thm-s0003-valgo   replicated  1/1       devmtl/caddy:0.9.5-alpine-0
vu3jhyo71oos  traefik           replicated  1/1       traefik:v1.1.2-alpine

or this using 2 commands:

root@N01-par1-dev-e:~/deploy-setup# echo; \
> docker service ls | head -n 1; \
> docker service ls | tail -n +2 |  sort -k2,2 -k1; echo;

ID            NAME              MODE        REPLICAS  IMAGE
yru8n6zxmp08  consul            global      4/4       consul:latest
1lb98n83fttr  mysql             replicated  1/1       devmtl/percona-fire:5.7.16-10-1
i75t4zef8x8c  papertrail        global      4/4       gliderlabs/logspout:latest
4s14t7f13fp8  portainer         replicated  1/1       portainer/portainer:1.11.3
8wojufyq3dwn  resilio           global      4/4       devmtl/resilio-fire:2.4.4-alpine-0
vn8fhhfvb6pw  sematext          global      4/4       sematext/sematext-agent-docker:1.31.11
mwxtlff6jyl5  thm-s0001-iamfoo  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
o8p4q85axkwy  thm-s0002-iambar  replicated  1/1       devmtl/iam-this-ctn:1.0.1-alpine-0
wedrfqzkg3zp  thm-s0003-caply   replicated  1/1       devmtl/nginx-fire:1.10.3-alpine-0
ql9yapc0brnk  thm-s0003-valgo   replicated  1/1       devmtl/caddy:0.9.5-alpine-0
vu3jhyo71oos  traefik           replicated  1/1       traefik:v1.1.2-alpine

Thanks in advance!

You can use awk to extract the name from the NAME column and sort the array of names generated to print the lines according to this order :

For docker service ls, the position of names and mode is stored to substring the name. Then the sort of the key array (containing names) is processed with asort :

docker service ls | awk ' 
{
    if (NR == 1) {
        print $0
        names=index($0,"NAME")
        mode=index($0,"MODE")
    }
    else{
        key[NR-2]=substr($0,names,mode-1-names) "\t" NR
        value[NR-2]=$0
    }
}
END {
    asort(key)
    for (i=1; i<=(NR-1); i++) {
        split(key[i],a,"\t")
        print value[a[2]-2]
    }
}'

The result is printed according to the order of sorted key array which contains the couple [name]\t[index]. The index is used to get the line to be printed.

In the case of docker ps -a, NAMES is the last column so we take a fixed value for the length here 100 :

docker ps -a | awk ' 
{
    if (NR == 1) {
        print $0
        names=index($0,"NAME")
    }
    else{
        key[NR-2]=substr($0, names, 100) "\t" NR
        value[NR-2]=$0
    }
}
END {
    asort(key)
    for (i=1; i<=(NR-1); i++) {
        split(key[i],a,"\t")
        print value[a[2]-2]
    }
}'

Check this post for another example of asort