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Top Forums Shell Programming and Scripting Linux: replace pattern with pattern Post 302712839 by dirkaulo on Tuesday 9th of October 2012 10:59:57 PM
Old 10-09-2012
Linux: replace pattern with pattern

Hi, I am a rookie of Linux.
I have a problem on how can I replace a certain pattern in Linux with nothing. Can anyone help me?
Smilie

sample.txt:
Code:
<binding>App189
ABC SampleMachine1 ABC
XXX
YYY
ZZZ
</binding>
<binding>App190
ABC SampleMachine2 ABC
XXX
YYY
ZZZ
</binding>
<binding>App191
GHI SampleMachine3 ABC
XXX
YYY
ZZZ
</binding>

What I need to do is to search a keyword like "SampleMachine2" in 'sample.txt', and then delete its whole binding. I think the pattern should be like:
Code:
<binding> *
* SampleMachine2 *
*
</binding>

My desired result after delete is that:
Code:
<binding>App189
ABC SampleMachine1 ABC
XXX
YYY
ZZZ
</binding>
<binding>App191
GHI SampleMachine3 ABC
XXX
YYY
ZZZ
</binding>

Could anyone tell me what should be the script like?

Moderator's Comments:
Mod Comment Please use code tags

Last edited by Scrutinizer; 10-10-2012 at 03:59 AM.. Reason: ; code tags (mod)
 

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PAM_FTP(8)							 Linux-PAM Manual							PAM_FTP(8)

NAME
pam_ftp - PAM module for anonymous access module SYNOPSIS
pam_ftp.so [debug] [ignore] [users=XXX,YYY,...] DESCRIPTION
pam_ftp is a PAM module which provides a pluggable anonymous ftp mode of access. This module intercepts the user's name and password. If the name is ftp or anonymous, the user's password is broken up at the @ delimiter into a PAM_RUSER and a PAM_RHOST part; these pam-items being set accordingly. The username (PAM_USER) is set to ftp. In this case the module succeeds. Alternatively, the module sets the PAM_AUTHTOK item with the entered password and fails. This module is not safe and easily spoofable. OPTIONS
debug Print debug information. ignore Pay no attention to the email address of the user (if supplied). ftp=XXX,YYY,... Instead of ftp or anonymous, provide anonymous login to the comma separated list of users: XXX,YYY,.... Should the applicant enter one of these usernames the returned username is set to the first in the list: XXX. MODULE TYPES PROVIDED
Only the auth module type is provided. RETURN VALUES
PAM_SUCCESS The authentication was successful. PAM_USER_UNKNOWN User not known. EXAMPLES
Add the following line to /etc/pam.d/ftpd to handle ftp style anonymous login: # # ftpd; add ftp-specifics. These lines enable anonymous ftp over # standard UN*X access (the listfile entry blocks access to # users listed in /etc/ftpusers) # auth sufficient pam_ftp.so auth required pam_unix.so use_first_pass auth required pam_listfile.so onerr=succeed item=user sense=deny file=/etc/ftpusers SEE ALSO
pam.conf(5), pam.d(5), pam(7) AUTHOR
pam_ftp was written by Andrew G. Morgan <morgan@kernel.org>. Linux-PAM Manual 06/04/2011 PAM_FTP(8)
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