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Top Forums Shell Programming and Scripting Removing blank lines from a file Post 302745841 by raosr020 on Tuesday 18th of December 2012 07:52:36 AM
Old 12-18-2012
The above command is removing all the blank lines. But i want to keep only one blank line if more than one blank lines avail. I want to remove all other blank lines.

---------- Post updated at 06:22 PM ---------- Previous update was at 06:17 PM ----------

Code:
awk '/^$/{ if (! blank++) print; next } { blank=0; print }' my_file

or
Code:
 
awk 'NR==1 || NF || prvNF {print} {prvNF=NF}' my_file

Any of the above codes are working fine for me..
Thank you all!!!!!!!
 

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ECACCESS-EVENT-GRANT(1p)				User Contributed Perl Documentation				  ECACCESS-EVENT-GRANT(1p)

NAME
ecaccess-event-grant - Grant usage of an ECaccess Event SYNOPSIS
ecaccess-event-grant -version|-help|-manual ecaccess-event-grant [-debug] [-subscribe] [-notify] event-id user-list DESCRIPTION
Allow managing the Event permissions for a list of user(s). The permissions can be either subscribe, notify, both or none. In order to remove permissions to an Event for a list of users use this command with no -subscribe and -notify options. ARGUMENTS
event-id The identifier of the Event to grant. user-list The user(s) to give/remove the permissions. Multiple users should be separated by a column (e.g. abc,def). OPTIONS
-subscribe The user(s) specified in the user-list will be allowed to subscribe to the event-id (e.g. with the -eventIds option of the ecaccess-job-submit command). -notify The user(s) specified in the user-list will be allowed to send notifications to the event-id (e.g. with the ecaccess-event-send command). -version Display version number and exits. -help Print a brief help message and exits. -manual Prints the manual page and exits. -debug Display the SOAP messages exchanged. EXAMPLES
ecaccess-event-grant -subscribe 167 abc,def,jhi Allow the users abc, def and jhi to subscribe to this Event. ecaccess-event-grant 167 jkl Remove all rights to the Event for the user jkl. SEE ALSO
ecaccess-event-clear, ecaccess-event-delete, ecaccess-event-send, ecaccess-event-list, ecaccess-event-create and ecaccess. perl v5.14.2 2012-04-16 ECACCESS-EVENT-GRANT(1p)
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