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nop — Check validity and pretty-print graphs in canonical format. Graphviz filters: `acyclic`, `bcomps`, `

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandprettyandcliprintchecknopvalidity

Problem

How to use the nop command: Check validity and pretty-print graphs in canonical format. Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, and unflatten. More information: <https://www.graphviz.org/pdf/nop.1.pdf>.

Solution

nop — Check validity and pretty-print graphs in canonical format. Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, and unflatten. More information: <https://www.graphviz.org/pdf/nop.1.pdf>.

Pretty-print one or more graphs in canonical format:

nop {{path/to/input1.gv path/to/input2.gv ...}} > {{path/to/output.gv}}

Check one or more graphs for validity, producing no output graph:

nop -p {{path/to/input1.gv path/to/input2.gv ...}}

Display help:

nop -?

Code Snippets

Pretty-print one or more graphs in canonical format

nop {{path/to/input1.gv path/to/input2.gv ...}} > {{path/to/output.gv}}

Check one or more graphs for validity, producing no output graph

nop -p {{path/to/input1.gv path/to/input2.gv ...}}

Display help

nop -?

Context

tldr-pages: common/nop

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