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Full Discussion: Bash : Parameter expansion ${var:-file*}
Top Forums Shell Programming and Scripting Bash : Parameter expansion ${var:-file*} Post 303039685 by popeye on Saturday 12th of October 2019 12:21:06 AM
Old 10-12-2019
Bash : Parameter expansion ${var:-file*}
Example data
Code:
$ ls *somehost*
10.10.10.10_somehost1.xyz.com.log  
11.11.11.11_somehost2.xyz.com.log

Code:
#!/bin/bash
#FILES="*.log"
FILES=${FILES:-*.log}

for x in $FILES
do
ip="${x%%_*}"     # isolate IP address
x="${x##*_}"       # isolate hostname
hnam="${x%.*}" # Remove the ".log" extension so that only the hostname.xyz.com remains
echo "$ip $hnam"

Output
Code:
10.10.10.10 somehost1.xyz.com
11.11.11.11 somehost2.xyz.com

Questions
1. Which is faster and more proper FILES="*.log" or FILES=${FILES:-*.log} or something else. There may be a very large number of files I would want to loop through.
2. How can I combine the last two parameter expansion statements : x="${x##*_}" and hnam="${x%.*}" without external calls.

Thanks in advance.
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LEARN ABOUT SUSE

finance::quote::fidelity

Finance::Quote::Fidelity(3)				User Contributed Perl Documentation			       Finance::Quote::Fidelity(3)

NAME

       Finance::Quote::Fidelity - Obtain information from Fidelity Investments.

NOTE NOTE NOTE NOTE NOTE

       This module is currently non-functional.

SYNOPSIS

	   use Finance::Quote;

	   $q = Finance::Quote->new;

	   %info = Finance::Quote->fetch("fidelity","FBGRX");
	   %info = Finance::Quote->fetch("fidelity_direct","FBGRX");

DESCRIPTION

       This module obtains information from Fidelity Investments, http://www.fidelity.com/.  This module is loaded by default on the
       Finance::Quote object.  It is also possible to load this module explicitly by passing "Fidelity" as one of Finance::Quote->new()'s
       parameters.

       The "fidelity" fetch method may make use of failover modules.  The "fidelity_direct" method will only obtain information directly from
       Fidelity.

       Information returned by this module is governed by Fidelity Investment's terms and conditions.

LABELS RETURNED

       The following labels may be returned by Finance::Quote::Fidelity: exchange, name, number, nav, change, ask, date, yield, price.

SEE ALSO

       Fidelity Investments, http://www.fidelity.com/

       Finance::Quote::Yahoo::USA;

perl v5.12.1							    2009-10-05					       Finance::Quote::Fidelity(3)
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