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  • Committer: Suren A. Chilingaryan
  • Date: 2009-04-09 03:21:08 UTC
  • Revision ID: csa@dside.dyndns.org-20090409032108-w4edamdh4adrgdu3
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Development/languages/awk/awk.virables
 
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######################## Standart Virables ####################################
 
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$0                      # Current String
 
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$1 $2 ... $n            # Words of current string
 
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IGNORECASE = 1          # Set for case insensitive Regular Expression 
 
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                        # and string comparisions
 
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ARGC, ARGV              # Command line parametrs ( from 0 ), as in C
 
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                        # Input Files managed by this variables, so input
 
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                        # files may been managed from "START" section
 
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ARGIND                  # Input file currently processing
 
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FILENAME                # Name of file currently processing
 
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FNR                     # Number of records in current files
 
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NR                      # Number of Lines currently processed
 
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NF                      # Number of Words in current Line
 
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ENVIRON                 # Array that contains evrimoment ( ENVIRON["HOME"] )
 
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ERNO                    # String Describing Last Error
 
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RLENGTH                 # Length of the substring matched by "match" function
 
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RSTART                  # Start-Index of the substring matched by "match"
 
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################################# Separators ##################################
 
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RS                      # Must contain Lines Separator ( Default "\n" )
 
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                        #    "" Means some empty lines
 
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                        #    RegExp can be used 
 
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RT                      # Text in the Input matched RS ( actualy needed if
 
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                        # "RS" RegExp )
 
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FS                      # String Separator ( Default " " )
 
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                        #     "" Means each character separately
 
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                        #     if RS="" then newline characters always acts as
 
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                        #       word separators
 
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                        # WARNING: If you change this virable no stripping
 
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                        # leading & trailing will apear.
 
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                        # But It automaticaly done when $0 recalculated
 
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                        # for example you may write $(NR+1)="" to avoid
 
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                        # this problem
 
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FIELDWIDTHS = "a b ..." # Set this virable if dont want use Word Separators
 
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                        # but want fixed word size, here "a" size of 1 word
 
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                        # "b" size of 2 word & etc...
 
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OFS                     # Separator for print items: print a,b --> a"OFS"b
 
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ORS                     # Separator for prints: print a; print b --> a"ORS"b
 
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OFMT                    # flags for printing numbers by print ( equal C printf )
 
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CONVFMT                 # equal for OFMT but for internal use ( calculatings )
 
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SUBSEP                  # Array subscripts separator ( Default: \034 )
 
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