q:tldr:79dc7
q: Format output using an output delimiter with an output header line (note: command will output column names based on the input file header or the column aliases overridden in the query).
$ q -D${delimiter} -O "SELECT ${column} as ${alias} from ${filename}"
try on your machine
This command is used in a command-line interface to query data from a file. Here is what each part of the command means:
q: This is the command or executable being run.-D${delimiter}: This option specifies the delimiter used in the file to separate different columns of data.${delimiter}is a placeholder for the actual delimiter character or string.-O "SELECT ${column} as ${alias} from ${filename}": This option specifies the SQL query to execute on the data in the file.${column}is a placeholder for the name of the column(s) to select,${alias}is a placeholder for the alias or name to give to the selected column(s), and${filename}is a placeholder for the name of the file to query.
In summary, this command uses the q executable to query data from a file. It specifies the delimiter used in the file and the SQL query to execute on the specified column(s) from the file. The result of the query will be displayed or used by the q command accordingly.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.