Solaris - ngrep functionality


Im trying to get a text output from a ngrep command but Im getting it in a binary form...

# ngrep -O dump.pcap -W byline -d igb0 port 7700
interface: igb0
filter: (ip) and ( port 7700 )
output: dump.pcap

> file dump.pcap
dump.pcap:      data

Is there a way to have this file as a text file instead of a binary file?

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Joseph GanSystem AdminCommented:
uuencode - for binary to text file
joaotellesAuthor Commented:
Tks. But is there a way for the ngrep to give an output directly text?
Joseph GanSystem AdminCommented:
ngrep -W byline -d igb0 port 7700 > outfile.txt
"-O dump.pcap" will write pcap compatible output to "dump.pcap" which is binary by nature.
There is no way to change this.

The textual output of ngrep is shown on your terminal. In order to write it immediately to a text file redirect  standard output:

ngrep  -W byline -d igb0 port 7700 > outputfile.txt

The pcap compatible output file can be used as input to subsequent "ngrep" runs (e. g. for further filtering), so this is a way to convert your existing "dump.pcap" to a text file:

ngrep -I dump.pcap > outputfile.txt

Use the "-x" flag instead of "-W byline" to have ngrep show packet contents as hexadecimal as well as ASCII.

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