Error: podman wait accepts at most one argument

[nalind]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

The help output for podman wait suggests that podman can wait for multiple containers if I give it all of their IDs, but when I try to do so, it produces a Error: 'podman wait' accepts at most one argument error.

Steps to reproduce the issue:

1. podman run --cidfile a fedora

2. podman run --cidfile b fedora

3. podman wait $(cat a) $(cat b)

Describe the results you received:

Error: 'podman wait' accepts at most one argument

Describe the results you expected:

Quietly return successfully.

Additional information you deem important (e.g. issue happens only occasionally):

It doesn't seem to matter whether the container information I give it is valid or not; the error is hit before that is considered.

Output of podman version:

Version:      2.1.0-dev
API Version:  1
Go Version:   go1.15
Built:        Tue Aug 25 08:48:48 2020
OS/Arch:      linux/amd64

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.16.0-dev
  cgroupVersion: v2
  conmon:
    package: conmon-2.0.21-0.3.dev.git5a6b2ac.fc33.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.21-dev, commit: 5c03a23398b94cf869f071128631ef7fd9153b3b'
  cpus: 8
  distribution:
    distribution: fedora
    version: "33"
  eventLogger: file
  hostname: pillbox
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 2516
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 2510
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  kernel: 5.8.4-200.fc32.x86_64
  linkmode: dynamic
  memFree: 4523638784
  memTotal: 33439875072
  ociRuntime:
    name: crun
    package: crun-0.14.1-4.fc33.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 0.14.1
      commit: 598ea5e192ca12d4f6378217d3ab1415efeddefa
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +YAJL
  os: linux
  remoteSocket:
    path: /run/user/2510/podman/podman.sock
  rootless: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.1.4-1.fc33.x86_64
    version: |-
      slirp4netns version 1.1.4+dev
      commit: eecccdb96f587b11d7764556ffacfeaffe4b6e11
      libslirp: 4.3.1
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.0
  swapFree: 20252790784
  swapTotal: 21088952320
  uptime: 166h 34m 35.62s (Approximately 6.92 days)
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - registry.centos.org
  - docker.io
store:
  configFile: /home/nalin/.config/containers/storage.conf
  containerStore:
    number: 0
    paused: 0
    running: 0
    stopped: 0
  graphDriverName: overlay
  graphOptions:
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: fuse-overlayfs-1.1.2-1.fc33.x86_64
      Version: |-
        fusermount3 version: 3.9.3
        fuse-overlayfs: version 1.1.0
        FUSE library version 3.9.3
        using FUSE kernel interface version 7.31
  graphRoot: /home/nalin/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 12
  runRoot: /run/user/2510/containers
  volumePath: /home/nalin/.local/share/containers/storage/volumes
version:
  APIVersion: 1
  Built: 1598359728
  BuiltTime: Tue Aug 25 08:48:48 2020
  GitCommit: ""
  GoVersion: go1.15
  OsArch: linux/amd64
  Version: 2.1.0-dev

Package info (e.g. output of rpm -q podman or apt list podman):

podman-2.1.0-0.179.dev.git43f2771.fc33.x86_64

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide?

Yes

Additional environment details (AWS, VirtualBox, physical, etc.):

Fedora 33, on my laptop.