# pamfunc > Apply a simple arithmetic function to a Netpbm image. > More information: . - Apply the specified arithmetic function with `n` as the second argument to each sample in the specified PAM image: `pamfunc -{{multiplier|divisor|adder|subtractor|min|max}} {{n}} {{path/to/input.pam}} > {{path/to/output.pam}}` - Apply the specified bit string function with `n` as the second argument to each sample in the specified PAM image: `pamfunc -{{andmask|ormask|xormask|shiftleft|shiftright}} {{n}} {{path/to/input.pam}} > {{path/to/output.pam}}`