What is the use of string functiong sub(regex,replacement)?

1224

---

What is the use of string functiong sub(regex,replacement,string)?

1238

---

What is the use of string function match(string,regex)?

1262

---

What is the use of string function tolower(string)?

1137

---

What is the use of string function toupper(string)?

1243

---

What is the use of string function asort(string,[d])?

1236

---

What is the use of string function asorti(string,[d])?

1265

---

What is the use of string function gensub(r,s,h [,t])?

1791

---

What are System functions?

1348

---

What is the use of systime function?

1452

---

What is the use of Strftime function?

1476

---

What are AWK patterns?

1412

---

What is the use of ARGV ?

1396

---

What is the use of ARGIND?

1356

---

What is the use of FNR?

1418

---