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Full Discussion: sed on Mac OS versus Linux
Homework and Emergencies Emergency UNIX and Linux Support sed on Mac OS versus Linux Post 302427720 by Scott on Monday 7th of June 2010 03:44:41 PM
Old 06-07-2010
Hi.

From the OSX man page for SED:

Code:
-i extension
  Edit files in-place, saving backups with the specified extension.

So, for example:
Code:
sed -i.bak 's/ /_/g' somefile

(I guess that the extension is optional on Linux, but may be provided (will check!))

(actually, without checking too much, according to the man page here, it is optional)

(actually #2, the OSX man page is rubbish! It suggests that it is optional, but complains when it's not given)

Code:
-i extension
             Edit files in-place, saving backups with the specified extension.  If a zero-length extension is given,
             no backup will be saved.  It is not recommended to give a zero-length extension when in-place editing
             files, as you risk corruption or partial content in situations where disk space is exhausted, etc.


Last edited by Scott; 06-07-2010 at 04:57 PM..
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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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