pamflip — Flip or rotate a PAM or PNM image. More information: <https://netpbm.sourceforge.net/doc/pamflip.htm

Rotate the input image counter-clockwise for a specific degree

pamflip {{[-r|-rotate]}}{{90|180|270}} {{path/to/input.pam}} > {{path/to/output.pam}}

Flip left for right

pamflip {{[-lr|-leftright]}} {{path/to/input.pam}} > {{path/to/output.pam}}

Flip top for bottom

pamflip {{[-tb|-topbottom]}} {{path/to/input.pam}} > {{path/to/output.pam}}

Flip the input image on the main diagonal

pamflip {{[-xy|-transpose]}} {{path/to/input.pam}} > {{path/to/output.pam}}