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Full Discussion: arithmetic in tcsh
Top Forums Shell Programming and Scripting arithmetic in tcsh Post 302200128 by gobi on Wednesday 28th of May 2008 01:27:57 PM
Old 05-28-2008
I did not know awk could add. Sorry about that.

The file which name is stored in $LOG_FILE contains

bc misstep (hi)............34
bc misstep (hello)..2
bc misstep (bye)......0

This information is repeated many times but I only want to use the last set. I would like to add up these three numbers. The following gives me the three numbers. How can I add them up?

set LOG_BC = `tail -n 17 $LOG_FILE | grep bc | awk 'BEGIN{FS="."} {print $NF}'`
 

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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/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/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/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. SunOS 5.10 30 Aug 2004 getusershell(3C)
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