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1. Shell Programming and Scripting
Hi Friends,
I have written a script to capture system performance every hour and redirected to output file. How to overwrite the file every next day?
Thanks
Suresh (4 Replies)
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I hope you are all ok! :D
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10. Shell Programming and Scripting
Hi all,
I am trying to overwrite some lines of a very big file.
I know the number of the line but I don't know how to point the cursor on its beginning. there is an option to notice the offset in lines?
thanks! (7 Replies)
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APPLYDELTARPM(8) System Manager's Manual APPLYDELTARPM(8)
NAME
applydeltarpm - reconstruct an rpm from a deltarpm
SYNOPSIS
applydeltarpm [-v] [-p] [-r oldrpm] deltarpm newrpm
applydeltarpm -c|-C deltarpm
applydeltarpm [-c|-C] -s sequence
applydeltarpm -i deltarpm
DESCRIPTION
applydeltarpm applies a binary delta to either an old rpm or to on-disk data to re-create a new rpm. The old rpm can be specified with the
-r option, if no rpm name is provided on-disk data is used. You can use -p to make applydeltarpm print the percentage of completion, or -v
to make it more verbose about its operation.
The second an third form can be used to check if the reconstruction is possible. It may fail if the on-disk data got changed (deltarpms are
created in a way that config file changes do not matter) or the deltarpm does not match the rpm the delta was generated with. The -c option
selects full (i.e. slow) on-disk checking, whereas -C only checks if the filesizes have not changed.
Instead of a full deltarpm a sequence id can be given with the -s sequence option. Such an id contains all the information that is needed
to do reconstruction checking.
Finally information about a deltarpm can be printed with the -i option.
MEMORY CONSIDERATIONS
applydeltarpm was written to work on systems with limited memory. It uses a paging algorithm to keep the size of in-core data low and not
bring the system in an out-of-memory situation.
EXIT STATUS
applydeltarpm returns 0 if the rpm could be recreated or the checking succeeded, it returns 1 and prints an error message to stderr if
something failed.
SEE ALSO
makedeltarpm(8), rpm(8)
AUTHOR
Michael Schroeder <mls@suse.de>
Feb 2005 APPLYDELTARPM(8)