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Shell Programming and Scripting
Ping inside FOR loop
Post 302477461 by courteous on Sunday 5th of December 2010 10:03:38 AM
12-05-2010
Ping inside FOR loop
Hello,
I'm trying to write (my own primitive) traceroute command that would write out all IPs that packets are hoping through.
So I've put the ping command inside a for loop
What is wrong with this script? All I get is 30 "Usage: ping [...]" replies. 
EDIT: I see it: I've written $1 instead of $i.
But don't you worry, I will most surely come back for help with grep! 
I'm trying to write (my own primitive) traceroute command that would write out all IPs that packets are hoping through.
So I've put the ping command inside a for loop
PHP Code:
#!/bin/bash
domain=${1-www.google.com}; #If no argument, then do www.google.com.
for ((i=1; i<=30; i++)) # max. 30 hops
do
ping -t $i $domain # I would later add "grep" to extract IPs
done
exit 0;
EDIT: I see it: I've written $1 instead of $i.
But don't you worry, I will most surely come back for help with grep! Last edited by courteous; 12-05-2010 at 11:23 AM.. Reason: novice-like error
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LEARN ABOUT DEBIAN
colorgccrc
COLORGCCRC(5) File Formats Manual COLORGCCRC(5) NAME
colorgccrc - configuration file for colorgcc DESCRIPTION
A colorgccrc configuration file is used to configure the highlighting of the compiler output from colorgcc. SYNTAX
Each line consists of a keyword designating a configuration variable. The keyword is followed by `:' and then one or several values (depending on the keyword). Lines beginning with a hash mark `#' are comments. CONFIGURATION VARIABLES
g++ | gcc | c++ | cc | g77 | gcj | gnat | gpc Specifies the paths to the compilers. Takes one value; a path to the compiler. nocolor Specifies what terminal types colorization should be disabled on. Takes one or several values, separated by whitespace. srcColor Specifies the highlighting attributes source-code should be given. Takes one or several color attributes. See the section COLOR ATTRIBUTES for more information. introColor Specifies the highlighting attributes for normal compiler output. Takes one or several color attributes. See the section COLOR ATTRIBUTES for more information. warningFileNameColor | errorFileNameColor Specifies the highlighting attributes for the filename in a warning or an error, respectively. Takes one or several color attributes. See the section COLOR ATTRIBUTES for more information. warningNumberColor | errorNumberColor Specifies the highlighting attributes for the line-number in a warning or an error, respectively. Takes one or several color attributes. See the section COLOR ATTRIBUTES for more information. warningMessageColor | errorMessageColor Specifies the highlighting attributes for the message-text in a warning or an error, respectively. Takes one or several color attributes. See the section COLOR ATTRIBUTES for more information. COLOR ATTRIBUTES
The following attributes are valid for highlighting. clear, reset bold, underline, underscore, blink, reverse, concealed black, red, green, yellow, blue, magenta, cyan, white on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white SEE ALSO
gcc(1), colorgcc(1) HISTORY
Jan 15 2003: Initial version of this manual-page. REPORTING BUGS
Report bugs to <jmoyers@geeks.com> AUTHORS
Jamie Moyers <jmoyers@geeks.com> is the author of colorgcc. This manual page was written by Joe Wreschnig <piman@sacredchao.net>, and modified by David Weinehall <tao@debian.org>, for the Debian GNU/Linux system (but may be used by others). COPYRIGHT
Copyright (C) 2003 Jamie Moyers This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. Jan 15, 2003 COLORGCCRC(5)