wc:tldr:c1639
wc: Count lines in file.
$ wc -l ${filename}
try on your machine
The command "wc -l ${filename}" is used to count the number of lines in a file specified by the variable "filename".
Let's break down the command into its components:
- "wc" stands for "word count". It is a command line utility in Unix-based operating systems that is used to display the number of lines, words, and characters in a file.
- "-l" is an option that specifies the "line count" mode for the "wc" command. It tells "wc" to only count the number of lines in the file and ignore words and characters.
- "${filename}" is a placeholder for the actual file name or path. The "${filename}" variable is used to pass the file name (or path) as an argument to the "wc" command.
By executing this command, the system will display the number of lines in the specified file.
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.