05-01-2020
Quote:
Originally Posted by
Varja
Today I am using on that specific line , instead of whole script executing. But this line making me to think , if for some reason that FS is not mounted during patching then I am missing that important message . Any way I can avoid ? I guess answer would be NO.
You could redirect error messages to a (log-)file, for a later review, or to parse for known issues after the 'main' commands.
So instead of
>/dev/null you would be using
>>/path/to/logfile.
Hope this helps
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LEARN ABOUT REDHAT
iptraf
IPTRAF(8) System Manager's Manual IPTRAF(8)
NAME
iptraf - Interactive Colorful IP LAN Monitor
SYNOPSIS
iptraf { [ -f ] [ -q ] [ { -i iface | -g | -d iface | -s iface | -z iface | -l iface } [ -t timeout ] [ -B [ -L logfile ] ] ] | [ -h ] }
DESCRIPTION
iptraf is an ncurses-based IP LAN monitor that generates various network statistics including TCP info, UDP counts, ICMP and OSPF informa-
tion, Ethernet load info, node stats, IP checksum errors, and others.
If the command is issued without any command-line options, the program comes up in interactive mode, with the various facilities accessed
through the main menu.
OPTIONS
These options can also be supplied to the command:
-i iface
immediately start the IP traffic monitor on the specified interface, or all interfaces if "-i all" is specified
-g immediately start the general interface statistics
-d iface
allows you to immediately start the detailed on the indicated interface (iface)
-s iface
allows you to immediately monitor TCP and UDP traffic on the specified interface (iface)
-z iface
shows packet counts by size on the specified interface
-l iface
start the LAN station monitor on the specified interface, or all LAN interfaces if "-l all" is specified
-t timeout
tells IPTraf to run the specified facility for only timeout minutes. This option is used only with one of the above parameters.
-B redirect standard output to /dev/null, closes standard input, and forks the program into the background. Can be used only with one
of the facility invocation parameters above. Send the backgrounded process a USR2 signal to terminate.
-L logfile
allows you to specify an alternate log file name. The default log file name is based on either the interface selected (detailed
interface statistics, TCP/UDP service statistics, packet size breakdown), or the instance of the facility (IP traffic monitor, LAN
station monitor). If a path is not specified, the log file is placed in /var/log/iptraf
-f clears all locks and counters, causing this instance of IPTraf to think it's the first one running. This should only be used to
recover from an abnormal termination or system crash.
-q no longer needed, maintained only for compatibility.
-h shows a command summary
SIGNALS
SIGUSR1 - rotates log files while program is running
SIGUSR2 - terminates an IPTraf process running in the background.
FILES
/var/log/iptraf/*.log - log file
/var/local/iptraf/* - important IPTraf data files
SEE ALSO
Documentation/* - complete documentation written by the author
AUTHOR
Gerard Paul Java (riker@mozcom.com)
MANUAL AUTHOR
Frederic Peters (fpeters@debian.org), using iptraf --help General manual page modifications by Gerard Paul Java (riker@mozcom.com)
IPTraf Help Page IPTRAF(8)