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| 1 | gawk: option requires an argument -- f
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| 2 | Usage: gawk [POSIX or GNU style options] -f progfile [--] file ...
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| 3 | Usage: gawk [POSIX or GNU style options] [--] 'program' file ...
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| 4 | POSIX options: GNU long options:
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| 5 | -f progfile --file=progfile
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| 6 | -F fs --field-separator=fs
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| 7 | -v var=val --assign=var=val
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| 8 | -m[fr] val
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| 9 | -W compat --compat
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| 10 | -W copyleft --copyleft
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| 11 | -W copyright --copyright
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| 12 | -W dump-variables[=file] --dump-variables[=file]
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| 13 | -W exec=file --exec=file
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| 14 | -W gen-po --gen-po
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| 15 | -W help --help
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| 16 | -W lint[=fatal] --lint[=fatal]
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| 17 | -W lint-old --lint-old
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| 18 | -W non-decimal-data --non-decimal-data
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| 19 | -W profile[=file] --profile[=file]
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| 20 | -W posix --posix
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| 21 | -W re-interval --re-interval
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| 22 | -W source=program-text --source=program-text
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| 23 | -W traditional --traditional
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| 24 | -W usage --usage
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| 25 | -W version --version
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| 26 |
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| 27 | To report bugs, see node `Bugs' in `gawk.info', which is
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| 28 | section `Reporting Problems and Bugs' in the printed version.
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| 29 |
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| 30 | gawk is a pattern scanning and processing language.
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| 31 | By default it reads standard input and writes standard output.
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| 32 |
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| 33 | Examples:
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| 34 | gawk '{ sum += $1 }; END { print sum }' file
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| 35 | gawk -F: '{ print $1 }' /etc/passwd
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