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CentOS 7.0 - man page for nop (centos section 1)

NOP(1)							      General Commands Manual							    NOP(1)

NAME
nop - pretty-print graph file
SYNOPSIS
nop [ -p? ] [ files ]
DESCRIPTION
nop reads a stream of graphs and prints each in pretty-printed (canonical) format on stdout. If no files are given, it reads from stdin.
OPTIONS
The following options are supported: -p Produce no output - just check the input for valid DOT. -? Print usage information.
EXIT STATUS
If any errors occurred while processing any input, such as a file not found or a file containing illegal DOT, a non-zero exit value is returned. Otherwise, zero is returned.
SEE ALSO
wc(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), libgraph(3) 21 March 2001 NOP(1)