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This page lists which functions are available in each version of
awk. I am building the list based on my own experience,
questions from readers, and occasional research. If you find a version of
awk, or a function, that is not listed here, or if you find an error on
these pages, write to Rob to let me know about it.
| Function | awk | nawk | gawk | DOS awk | |
|---|---|---|---|---|---|
| cos(x) | YES | YES | YES | YES | |
| exp(x) | YES | YES | YES | YES | |
| int(x) | YES | YES | YES | YES | |
| log(x) | YES | YES | YES | YES | |
| sin(x) | YES | YES | YES | YES | |
| sqrt(x) | YES | YES | YES | YES | |
| index(s,t) | YES | YES | YES | YES | |
| length(s) | YES | YES | YES | YES | |
| split(s,a,sep) | YES | YES | YES | YES | |
| sprintf("fmt",expr) | YES | YES | YES | YES | |
| substr(s,p,n) | YES | YES | YES | YES | |
| system(s) | no | YES | YES | YES | |
| atan2(y,x) | no | YES | ? | YES | |
| rand() | no | YES | ? | YES | |
| srand(x) | no | YES | ? | ? | |
| gsub(r,s,t) | no | YES | ? | YES | |
| match(s,r) | no | YES | ? | YES | |
| sub(r,s,t) | no | YES | ? | YES | |
| tolower(s) | no | YES | YES | ? | In fact, in nawk, these handle international characters |
| toupper(s) | no | YES | YES | ? |
Back to the main awk page
Go to the programmer's soapbox
Visit Grannus' Circle
Back to the front gate.