Data mining a text file. Post: 302205119

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Top Forums Shell Programming and Scripting Data mining a text file. Post 302205119 by drl on Friday 13th of June 2008 02:03:43 PM

06-13-2008

Registered User

Hi.
If you want to enumerate all the like items:

Code:

#!/bin/bash -

# @(#) s1       Demonstrate counting occurrences.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) cut sort uniq
echo

FILE=${1-data1}

cut -d" " -f3- $FILE |
sort |
uniq -c

exit 0

Producing:

Code:

$ ./s1

(Versions displayed with local utility "version")
SunOS 5.10
GNU bash 3.00.16
cut - no version provided for /usr/bin/cut.
sort - no version provided for /usr/xpg4/bin/sort.
uniq - no version provided for /usr/bin/uniq.

   2 adm 4
   2 bin 2
   2 daemon 1
   2 gdm 50
   2 listen 37
   2 lp 71
   1 noaccess 60002
   1 noaccess 60003
   2 nobody 60001
   2 nuucp 9
   2 root 0
   2 smmsp 25
   2 sys 3
   2 uucp 5
   2 webservd 80

See man pages for details ... cheers, drl

drl

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setusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

	 /bin/bash		    /bin/csh
	 /bin/jsh		    /bin/ksh
	 /bin/ksh93		    /bin/pfcsh
	 /bin/pfksh		    /bin/pfsh
	 /bin/sh		    /bin/tcsh
	 /bin/zsh		    /sbin/jsh
	 /sbin/pfsh		    /sbin/sh
	 /usr/bin/bash		    /usr/bin/csh
	 /usr/bin/jsh		    /usr/bin/ksh
	 /usr/bin/ksh93 	    /usr/bin/pfcsh
	 /usr/bin/pfksh 	    /usr/bin/pfsh
	 /usr/bin/sh		    /usr/bin/tcsh
	 /usr/bin/zsh		    /usr/sfw/bin/zsh
	 /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

NOTES

       Restricted shells should not be listed in /etc/shells.

SunOS 5.11							    1 Nov 2007							  getusershell(3C)