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Top Forums Shell Programming and Scripting A better way to compare text length percentage? Post 303046093 by bedtime on Thursday 23rd of April 2020 02:47:52 PM
Old 04-23-2020
A better way to compare text length percentage?

I have a solution, but it seems labored. I would like to compare strings return a value in percent out of 100.


Such as:

Code:
$ text1='a'; text2='abc'; s1=${#text1}; s2=${#text2}
$ [ "$s1" -gt "$s2" ] && di=$(( (($s1*100) / ($s2+1)) )) || [ "$s2" -gt "$s1" ] && di=$(( (($s2*100) / ($ls+1)) ))
$ echo $di
300

i.e., 'abc' is 300% longer than 'a'


For beginners: s1=${#text1} will return the length of $text1. In this case it would return '1' because it is one character long ('a').


I've looked at the man pages for 'diff' and some others and haven't figured out an easy way that this could be done in a more simple manner; yet, something tells me I'm missing something. I'm repeating the formulas, and I'm wondering if there is perhaps some way to do an inverse of a result... Anyways, it seems redundant.


Ideas?
 

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named.star(4)						     Kernel Interfaces Manual						     named.star(4)

NAME
named.star - Defines data used by named to initialize the BIND (Berkeley Internet Name Domain) name server file SYNOPSIS
/etc/namedb/named.* DESCRIPTION
The data files referenced in the named.conf file can have any names, but they are generally given names of the form /etc/namedb/named.*. This naming convention is used for convenience in maintaining the named daemon's file. The records in the named data files are called resource records. Except for comments (starting with a ; (semicolon) and continuing to the end of the line), the resource records in the data files generally follow the format of the resource records that the named daemon returns in response to queries from resolver routines. The named.conf file is the default configuration (or boot) file for the named server. The named daemon reads the start-up file when the named daemon starts and when receiving the signal SIGHUP. EXAMPLES
The following examples portray two domains on two different networks: Domain abc.aus.osf.com, Internet address 192.9.201.n (where n varies for each system on the network) Domain xyz.aus.osf.com, Internet address 128.114.100.n (where n varies for each system on the network) In this sample configuration, both the primary and the secondary name servers are in the abc.aus.osf.com domain, and host hera is the gateway host. The following are sample entries in a named.ca file: ; root name servers. 1 IN NS relay.osf.com. relay.osf.com. 3600000 IN A 129.114.1.2 The following two files are sam- ple entries from the named.data files for hosts venus and allen. (The data files can have any name you choose, as long as that name is defined in the named.boot file. In this case, the names are named.abcdata and named.xyzdata.) The named file for host venus is in the following file, called named.abcdata: ;OWNER TTL CLASS TYPE RDATA ;local domain server is venus @ IN SOA venus bob.robert.abc.aus.osf.com. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000 ;expire 86400) ;minimum IN NS venus IN NS kronos IN MX 10 venus.abc.aus.osf.com. ; address for local loopback localhost IN A 127.1 ; address of machines in the same domain venus IN A 192.9.201.1 venus IN A 128.114.100.1 venus IN MX 10 venus.abc.aus.osf.com. veabc IN CNAME venus IN WKS 192.9.201.1 udp (tftp nameserver domain) IN WKS 192.9.201.1 tcp (echo telnet smtp discard uucp-path systat daytime netstat chargen ftp time whois finger hostnames domain) ; delimiter for WKS kronos IN A 192.9.201.2 krabc IN CNAME kronos hera IN A 192.9.201.5 IN A 128.114.100.5 robert IN A 192.9.201.6 ernie IN A 192.9.201.7 IN HINFO HP-800 OS1 robert.abc.aus.osf.com. IN MX 10 venus.abc.aus.osf.com. The named file for host allen is in the following file, called named.xyzdata: ;OWNER TTL CLASS TYPE RDATA ;local domain server is venus xyz.aus.osf.com. IN SOA venus.abc.aus.osf.com. bob.robe rt.abc.aus.osf.com. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000 ;expire 86400) ;minimum xyz.aus.osf.com. IN NS venus.abc.aus.osf.com. IN NS kronos.abc.aus.osf.com. IN MX 10 venus.abc.aus.osf.com. ; address for local loopback localhost IN A 127.1 ; address of machines in the same domain allen IN A 128.114.100.3 allen IN MX 10 venus.abc.aus.osf.com. alxyz IN CNAME allen IN WKS 128.114.100.3 udp (tftp nameserver domain) IN WKS 128.114.100.3 tcp (echo telnet smtp discard uucp-path systat daytime netstat chargen ftp time whois finger hostnames domain) ; delimiter for WKS fred IN A 128.114.100.10 mike IN A 128.114.100.11 IN HINFO HP-800 OS1 The following is a sample named.local file that might appear on hosts in either of the sample domains: @ IN SOA venus.abc.aus.osf.com. gail.zeus.abc.aus.osf.com. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000 ;expire 86400) ;minimum IN NS venus.abc.aus.osf.com. 1 IN PTR localhost. The following two files are sample entries from the named.rev files for hosts venus and allen. For this example, the files are called named.abcrev and named.xyzrev. The reverse file for host venus is in the following file, called named.abcrev: @ IN SOA venus.abc.aus.osf.com. bob.robert.abc.aus.osf.com. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000 ;expire 86400) ;minimum 9.201.192.in-addr.arpa. IN NS venus.abc.aus.osf.com. IN NS kronos.abc.aus.osf.com. IN PTR hera.abc.aus.osf.com. ;ABC.AUS.OSF.COM Hosts 1.201.9.192.in-addr.arpa. IN PTR venus.abc.aus.osf.com. 2.201.9.192.in-addr.arpa. IN PTR kronos.abc.aus.osf.com. 5.201.9.192.in-addr.arpa. IN PTR hera.abc.aus.osf.com. 6.201.9.192.in-addr.arpa. IN PTR robert.abc.aus.osf.com. 7.201.9.192.in-addr.arpa. IN PTR ernie.abc.aus.osf.com. The reverse file for host allen is in the following file, called named.xyzrev: @ IN SOA venus.abc.aus.osf.com. bob.robert.abc.aus.osf.com. ( 1.1 ;serial 3600 ;refresh 600 ;retry 3600000 ;expire 86400) ;minimum 100.114.128.in-addr.arpa. IN NS venus.abc.aus.osf.com. IN NS kronos.abc.aus.osf.com. IN PTR hera.abc.aus.osf.com. ;XYZ.AUS.OSF.COM Hosts 3.100.114.128.in-addr.arpa. IN PTR allen.abc.aus.osf.com. 10.100.114.128.in-addr.arpa. IN PTR fred.abc.aus.osf.com. 11.100.114.128.in-addr.arpa. IN PTR mike.abc.aus.osf.com. ;ABC.AUS.OSF.COM Hosts 1.100.114.128.in-addr.arpa. IN PTR venus.abc.aus.osf.com. 5.100.114.128.in- addr.arpa. IN PTR hera.abc.aus.osf.com. RELATED INFORMATION
Daemon: named(8). delim off named.star(4)

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