Houdini ships with a handy utility abcecho which prints information about the Alembic file.

I've found it handy a few times when I wasn't sure where an Alembic file was coming from :)

This is how it works: first make sure you can call the abcecho program in your shell (as explained here). Then call it with the file's path as the first argument.

$ abcecho '/home/juraj/hou_abc_tmp/output.abc'
AbcEcho for Alembic 1.7.16 (built May 31 2021 18:21:02)
  file written by: Houdini 19.0.538
  using Alembic : Alembic 1.7.16 (built May 31 2021 18:21:02)
  written on : Wed Nov  2 21:19:16 2022
  user description : Exported from /home/juraj/hou_abc_tmp/v01.hip on 2022-11-02 21:19:16

  ScalarProperty name=1.samples;interpretation=;datatype=uint32_t;arraysize=1;numsamps=1
Object name=/geo1
  CompoundProperty name=.xform;schema=AbcGeom_Xform_v3
    ScalarProperty name=.inherits;interpretation=;datatype=bool_t;arraysize=1;numsamps=60
    ScalarProperty name=.ops;interpretation=;datatype=uint8_t;arraysize=1;numsamps=60
    ScalarProperty name=.vals;interpretation=;datatype=float64_t[16];arraysize=16;numsamps=60
  ScalarProperty name=visible;interpretation=;datatype=int8_t;arraysize=1;numsamps=60
Object name=/geo1/mountain1
  CompoundProperty name=.geom;schema=AbcGeom_PolyMesh_v1
    ScalarProperty name=.selfBnds;interpretation=box;datatype=float64_t[6];arraysize=6;numsamps=60
    ArrayProperty name=P;interpretation=point;datatype=float32_t[3];arraysize=8;numsamps=60
    ArrayProperty name=.faceIndices;interpretation=;datatype=int32_t;arraysize=24;numsamps=60
    ArrayProperty name=.faceCounts;interpretation=;datatype=int32_t;arraysize=6;numsamps=60
    CompoundProperty name=.arbGeomParams;schema=
    ArrayProperty name=N;interpretation=normal;datatype=float32_t[3];arraysize=24;numsamps=60
  ScalarProperty name=visible;interpretation=;datatype=int8_t;arraysize=1;numsamps=60

This file contains 60 frames of animated cube with normals. Note that you can see object's path in Houdini's graph, hip file's path, export date, Houdini version.

Here's another file exported from... well, see for yourself :)

> abcecho "C:\Users\Juraj\tests\abc_export\export_v01.abc"
AbcEcho for Alembic 1.7.16 (built May 31 2021 18:18:28)
  file written by: Maya 2023 AbcExport v1.0
  using Alembic : Alembic 1.8.3 (built Aug  3 2022 14:35:12)
  written on : Tue Oct 18 09:15:08 2022
  user description : Exported from: C:/Users/Juraj/tests/abc_export/scene_v01.mb

  ScalarProperty name=.childBnds;interpretation=box;datatype=float64_t[6];arraysize=6;numsamps=401
  ScalarProperty name=statistics;interpretation=;datatype=string;arraysize=1;numsamps=1
  ScalarProperty name=1.samples;interpretation=;datatype=uint32_t;arraysize=1;numsamps=1
Object name=/geo_sim:Group2
  CompoundProperty name=.xform;schema=AbcGeom_Xform_v3
Object name=/geo_sim:Group2/out_cloth
  CompoundProperty name=.geom;schema=AbcGeom_PolyMesh_v1
    ScalarProperty name=.selfBnds;interpretation=box;datatype=float64_t[6];arraysize=6;numsamps=401
    ArrayProperty name=P;interpretation=point;datatype=float32_t[3];arraysize=5020;numsamps=401
    ArrayProperty name=.faceIndices;interpretation=;datatype=int32_t;arraysize=39518;numsamps=401
    ArrayProperty name=.faceCounts;interpretation=;datatype=int32_t;arraysize=9908;numsamps=401
    CompoundProperty name=uv;schema=
      ArrayProperty name=.vals;interpretation=vector;datatype=float32_t[2];arraysize=10162;numsamps=401
      ArrayProperty name=.indices;interpretation=;datatype=uint32_t;arraysize=39518;numsamps=401
    ArrayProperty name=N;interpretation=normal;datatype=float32_t[3];arraysize=39518;numsamps=401
Object name=/file1
  CompoundProperty name=.xform;schema=AbcGeom_Xform_v3
    ScalarProperty name=.inherits;interpretation=;datatype=bool_t;arraysize=1;numsamps=1
    ScalarProperty name=.ops;interpretation=;datatype=uint8_t;arraysize=1;numsamps=1
    ScalarProperty name=.vals;interpretation=;datatype=float64_t[3];arraysize=3;numsamps=1
    ScalarProperty name=isNotConstantIdentity;interpretation=;datatype=bool_t;arraysize=1;numsamps=1
Object name=/file1/geo_cache
  CompoundProperty name=.geom;schema=AbcGeom_PolyMesh_v1
    ScalarProperty name=.selfBnds;interpretation=box;datatype=float64_t[6];arraysize=6;numsamps=401
    ArrayProperty name=P;interpretation=point;datatype=float32_t[3];arraysize=19726;numsamps=401
    ArrayProperty name=.faceIndices;interpretation=;datatype=int32_t;arraysize=79010;numsamps=401
    ArrayProperty name=.faceCounts;interpretation=;datatype=int32_t;arraysize=19781;numsamps=401
    CompoundProperty name=uv;schema=
      ArrayProperty name=.vals;interpretation=vector;datatype=float32_t[2];arraysize=21276;numsamps=401
      ArrayProperty name=.indices;interpretation=;datatype=uint32_t;arraysize=79010;numsamps=401

Running abcecho does not require Houdini's license and there are some more Alembic-related tools worth being aware of.