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Full Discussion: Shell script failing to read large Xml record-urgent critical help
Top Forums UNIX for Advanced & Expert Users Shell script failing to read large Xml record-urgent critical help Post 302204695 by bakunin on Thursday 12th of June 2008 09:24:25 AM
Old 06-12-2008
To give you sound advice it would be necessary to know what the script is, what your input data is and what your desired output is. Post it here (not *all* the data, just a significant sample) and we will think about it.

Lacking any info the best we can do is tell you some generalized hints which may or may not help in your specific case. Here is one: Probably the several sed-calls could be combined to one single script if they are piped one into another. This might speed things considerably.

Another one: maybe you are doing something context-oriented. sed is poor in that and maybe some of its shortcomings are covered by shell constructs. If this is the case you might be better of writing the whole in awk, which will be slower than sed in what sed can do well, but faster than sed and some shell constructs connected in a pipeline.

(For instance: if you try to cut out some part of every line sed is probably faster than then often-seen "awk '{print $5}'", but if the part you are cutting is a number and you want all these numbers totalled at the end than awk is quite better than cutting with sed and adding in a shell loop.)

bakunin
 

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LEARN ABOUT DEBIAN

code_saturne

CODE_SATURNE(1) 					       Code_Saturne commands						   CODE_SATURNE(1)

NAME

       code_saturne - Main user script of Code_Saturne.

SYNOPSIS

       code_saturne [-h|--help] <command>

DESCRIPTION

       The code_saturne script is the main user script of Code_Saturne.

OPTIONS

       -h, --help
	      Help message.

COMMANDS

       Further information will be obtain with code_saturne <command> --help

       check_consistency
	      The  code_saturne  check_consistency command checks the consistency between the user files and the Xml file (from the Graphical User
	      Interface) provided by the user and, if needed, that the chosen options are compatible with parallel calculations. Lastly, it prints
	      the chosen specific physics.

       check_mesh
	      The  code_saturne  check_mesh  command verify the quality of a given mesh. The following options will be passed to Code_Saturne pre-
	      processor.

       compile
	      The code_saturne compile command can be used to generate the cs_solver executable needed for running a Code_Saturne study.

       create The code_saturne create command sets up a directory structure for a Code_Saturne study or case. The  different  directories  created
	      are  MESH  for meshes, POST for user post-processing and a case directory (or several) containing a DATA, SRC (to store user files),
	      RESU (to store results) and SCRIPTS directory.

       info   The code_saturne info command is a wrapper for an easier look at Code_Saturne documentation.

SEE ALSO

       cs_io_dump(1), cs_partition(1), cs_preprocess(1), cs_solver(1)

								    2009-10-27							   CODE_SATURNE(1)
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