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Full Discussion: Merge two files line by line
Top Forums UNIX for Dummies Questions & Answers Merge two files line by line Post 302791783 by MadeInGermany on Tuesday 9th of April 2013 07:42:13 AM
Old 04-09-2013
Code:
#!/bin/bash
{
i=0
while read line
do
  printf "%s\n" "$line"
  i=$(( $i + 1 ))
  if [ $i -eq 3 ]; then
    i=0
    read line <&3
    printf "%s\n" "$line"
  fi
done < file1
} 3< file2

The while block reads from file1, the outer { } block reads from file2 using the helper descriptor &3.
Last edited by MadeInGermany; 04-09-2013 at 08:48 AM..
This User Gave Thanks to MadeInGermany For This Post:
Innsbrucker
 

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LEARN ABOUT OPENSOLARIS

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/ksh93, /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/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)
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