Try sfdoc -k <keyword>. For example,
bash$ sfdoc -k velocity sfexgr: Exact group velocity in VTI media sfchebvc: Post-stack 2-D velocity continuation by Chebyshev-tau method. sfagmig: Angle-gather constant-velocity time migration. sffourvc2: Velocity continuation with semblance computation. sfdix: Convert RMS to interval velocity using LS and shaping regularization. sfconstfdmig2: 2-D implicit finite-difference migration in constant velocity. sfpwdix: Convert RMS to interval velocity using LS and plane-wave construction. sfdixshape: Convert RMS to interval velocity using LS and shaping regularization. sfpveltran: Slope-based velocity transform. sfvelcon: Post-stack velocity continuation by implicit finite differences sfvscan: Velocity analysis. sfvelmod: Velocity transform. sfpreconstkirch: Prestack Kirchhoff modeling/migration in constant velocity. sfunif2: Generate 2-D layered velocity model from specified interfaces. sfunif3: Generate 3-D layered velocity model from specified interfaces. sffourvc: Velocity continuation. sfimospray: Inversion of constant-velocity nearest-neighbor inverse NMO. sfvelcon3: 3-D finite-difference velocity continuation on a helix
If some program description attracts your attention, run the program without arguments for a self-doc, then follow examples in the USED IN section to observe how it was used. Alternatively, use the web interface.
“sfdoc -k .” produces a full list of all programs.