Gawk/Getline-Summary
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4.10.10 Summary of getline Variants
Table 4.1
summarizes the eight variants of getline,
listing which predefined variables are set by each one,
and whether the variant is standard or a gawk extension.
Note: for each variant, gawk sets the RT predefined variable.
| Variant | Effect | awk / gawk
|
|---|---|---|
getline
|
Sets $0, NF, FNR, NR, and RT
|
awk
|
getline var
|
Sets var, FNR, NR, and RT
|
awk
|
getline < file
|
Sets $0, NF, and RT
|
awk
|
getline var < file
|
Sets var and RT
|
awk
|
| getline | Sets $0, NF, and RT
|
awk
|
getline var
|
Sets var and RT
|
awk
|
| & getline | Sets $0, NF, and RT
|
gawk
|
& getline var
|
Sets var and RT
|
gawk
|
Table 4.1: getline variants and what they set
