exec
exec is a Linux command in the Shell & Scripting category, rated advanced difficulty. Replaces the current shell process with a new command. The syntax is exec [options] command [args]. It returns none (process replaced). A practical example: exec bash --login # Replace shell with new login shell exec python3 script.py # Run script, replacing shell A close relative is echo, which displays a line of text. Used in scripts for output. A close relative is printf, which formats and prints data (like C printf). More control than echo. A close relative is export, which sets or exports environment variables for child processes. More about this category: Linux shell and scripting commands — bash, echo, export, alias, and more. Work with the shell environment and scripts. Related Shell & Scripting commands: echo, printf, export, source, alias, unalias, history, xargs.