| Variable |
Description
|
| $n |
nth field in current record; fields are separated by FS |
| $0 |
Entire input record |
| ARGC |
Number of arguments on command line |
| ARGIND |
Current file's place in command line (starting with 0) |
| ARGV |
An array containing the command-line arguments |
| CONVFMT |
Conversion format for numbers (default is %.6g) |
| ENVIRON |
An associative array of environment variables |
| ERRNO |
Description of last system error |
| FIELDWIDTHS |
List of field widths (whitespace-separated) |
| FILENAME |
Current filename |
| FNR |
Like NR, but relative to the current file |
| FS |
Field separator (default is any whitespace; null string separates into individual characters) |
| IGNORECASE |
If true, make case-insensitive matches |
| NF |
Number of fields in current record |
| NR |
Number of the current record |
| OFMT |
Output format for numbers (default is %.6g) |
| OFS |
Output field separator (default is a blank) |
| ORS |
Output record separator (default is a newline) |
| RLENGTH |
Length of the string matched by match function |
| RS |
Record separator (default is a newline) |
| RSTART |
First position in the string matched by match function |
| SUBSEP |
Separator character for array subscripts (default is \034) |
