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Full Discussion: help with grep command
Top Forums Shell Programming and Scripting help with grep command Post 302530839 by Skrynesaver on Wednesday 15th of June 2011 05:35:01 AM
Old 06-15-2011
Quote:
Originally Posted by born
Code:
T7310,T7311
T0000
...
T7279
T6976,T6869

i want the comma(,) separated ones (T6976,T6869) intact,means i want to
keep the comma separated ones unchanged

P.S:i am beginning to enjoy scripting Smilie
Code:
egrep -o '(T[0-9]+,?)*' pmt.txt

It becomes adictive
 

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JOURNAL_GET_UNDO_ACC(9) 				     The Linux Journalling API					   JOURNAL_GET_UNDO_ACC(9)

NAME
journal_get_undo_access - Notify intent to modify metadata with non-rewindable consequences SYNOPSIS
int journal_get_undo_access(handle_t * handle, struct buffer_head * bh); ARGUMENTS
handle transaction bh buffer to undo DESCRIPTION
Sometimes there is a need to distinguish between metadata which has been committed to disk and that which has not. The ext3fs code uses this for freeing and allocating space, we have to make sure that we do not reuse freed space until the deallocation has been committed, since if we overwrote that space we would make the delete un-rewindable in case of a crash. To deal with that, journal_get_undo_access requests write access to a buffer for parts of non-rewindable operations such as delete operations on the bitmaps. The journaling code must keep a copy of the buffer's contents prior to the undo_access call until such time as we know that the buffer has definitely been committed to disk. We never need to know which transaction the committed data is part of, buffers touched here are guaranteed to be dirtied later and so will be committed to a new transaction in due course, at which point we can discard the old committed data pointer. Returns error number or 0 on success. AUTHORS
Roger Gammans <rgammans@computer-surgery.co.uk> Author. Stephen Tweedie <sct@redhat.com> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 JOURNAL_GET_UNDO_ACC(9)
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