pnmshear — Shear a PNM image. More information: <https://netpbm.sourceforge.net/doc/pnmshear.html>.

Shear a PNM image by the specified angle

pnmshear {{angle}} {{path/to/input.pnm}} > {{path/to/output.pnm}}

Specify the color of the background in the sheared image

pnmshear {{[-b|-background]}} {{blue}} {{angle}} {{path/to/input.pnm}} > {{path/to/output.pnm}}

Do not perform anti-aliasing

pnmshear {{[-n|-noantialias]}} {{angle}} {{path/to/input.pnm}} > {{path/to/output.pnm}}