tldr/pages/common/pamfunc.md

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# pamfunc
> Apply a simple arithmetic function to a Netpbm image.
> More information: <https://netpbm.sourceforge.net/doc/pamfunc.html>.
- 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}}`