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Shell Programming and Scripting
errors while using getline
Post 302407447 by vgersh99 on Thursday 25th of March 2010 12:14:17 PM
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hi , I got a script that I don't understand.
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command="echo "$1
command | getline echome
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How do you make the getline function return to the original line?
The example below should make it clear where I am currently going wrong.
Thanks
AWK SCRIPT:
-------------
awk -F '-' '{
tmpLine = "EMPTY"
print "CURRENT LINE :"$0
getline tmpLine
print "NEXT LINE :"tmpLine
}'... (1 Reply)
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I am using awk and want to use getline from a file like below
getline x < file
However file consists of two columns and I only want to store $2
Any way I can do this?
---------- Post updated at 06:54 AM ---------- Previous update was at 06:45 AM ----------
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I'm running the script below and get the output below against a file with
lineA=aaa
lineB=bbb
lineC=ccc
lineD=ddd
I get output:
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I need the output to be:
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cat filename | nawk '/lineA=aaa/ {
getline;
do {
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Hi All,
When I do man getline on my Linux system (in BASH), I see an example C code where a file is being read using getline() function.
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Hi,
I have an awk script with the following function in it .
function cmd( c )
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return foo ;
close( c );
}
}
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LEARN ABOUT SUNOS
shells
shells(4) File Formats shells(4) NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list. Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)). FILES
/etc/shells lists shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.10 4 Jun 2001 shells(4)