solcjs:tldr:c6c07

The command "solcjs --abi ${filename-sol}" is used to compile a Solidity smart contract and generate the Application Binary Interface (ABI) file for the contract.

Here is a breakdown of each component:

• "solcjs" is the command-line interface for the Solidity compiler.
• "--abi" is a flag that instructs the compiler to generate the ABI file along with the compiled contract.
• "${filename-sol}" is a variable that represents the name of the Solidity source code file (with the .sol extension) you want to compile.

When you execute this command, it will invoke the solcjs compiler to compile the specified Solidity source code file and produce an ABI file that describes the contract's functions, events, and variables. The ABI file is necessary for interacting with the smart contract from external applications or scripts.