file-run1

Downloading the file to examine:

wget https://artifacts.picoctf.net/c/219/run 

Giving it the access to execute:

chmod +x run.1

and execute it:

./run.1

or you can cut off everything except the flag:

./run.1 | cut -d " " -f4

here:

• cut: cutting out certain sections (fields) from each line of the input text. cut reads from stdin or from files.
• -d " " means that a space character is used as a separator. cut will examine each line of the input text and split it into separate “fields” whenever it runs into a space.
• -f4 – The option specifies which field to select for output. 4 means cut will select and extract the 4th field from each line. Fields are counted starting from 1.

Example:

picoCTF{U51N6_Y0Ur_F1r57_F113_e5559d46}