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Full Discussion: find and replace with sed
Top Forums Shell Programming and Scripting find and replace with sed Post 302503337 by zaxxon on Thursday 10th of March 2011 08:30:36 AM
Old 03-10-2011
-F= Defining = as field separator
NR==FNR If this is true, we are currently in the 1st file (f1)
{_[$1]=$2; We create an asociative array named _, where field 1 ($1) is the key and field 2 ($2) is the value to that key
next} When done with this line, just stop processing it and get the next one
_[$1] Here NR==FNR is not true anymore, so we are in the 2nd file (f2), and we check if the key from array _ matches
{print $1,_[$1]; and so we print field 1 and the element of the array where the key matches field 1
next} You already know this one, look above
1 When _[$1] did not match, we go here and just print the line
OFS="=" Defining "=" as the output field separator
f1 f2 Those 2 are our input files - the order is important as it depends, how we process the files
 

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LEARN ABOUT REDHAT

nwbpset

NWBPSET(1)							      nwbpset								NWBPSET(1)

NAME

       nwbpset - Create a bindery property or set its value

SYNOPSIS

       nwbpset [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ]

DESCRIPTION

       nwbpset Reads a property specification from the standard input and creates and sets the corresponding property. The format is determined by
       the output of 'nwbpvalues -c'. nwbpset will hopefully become an important part of the bindery management suite of ncpfs, together with

       As another example, look at the following command line:

	 nwbpvalues -t 1 -o supervisor -p user_defaults -c |
	 sed '2s/.*/ME/'|
	 sed '3s/.*/LOGIN_CONTROL/'|
	 nwbpset

       With this command, the property user_defaults of the user object 'supervisor' is copied into the property login_control of the user  object
       'me'.

	 nwbpvalues -t 1 -o me -p login_control -c |
	 sed '9s/.*/ff/'|
	 nwbpset

       This command disables the user object me.

       Feel free to contribute other examples!

       nwbpset looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more information.
       Please note that the access permissions of $HOME/.nwclient MUST be 600 for security reasons.

OPTIONS

       -h
	  -h is used to print out a short help text.

       -S server
	  server is the name of the server you want to use.

       -U user
	  user is the user name to use for login.

       -P password
	  password is the password to use for login. If neither -n nor -P are given, and the user has no open connection to  the  server,  nwbpset
	  prompts for a password.

       -n
	  -n should be given if no password is required for the login.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

AUTHORS

       nwbpset was written by Volker Lendecke. See the Changes file of ncpfs for other contributors.

nwbpset 							     8/7/1996								NWBPSET(1)
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