2020年1月25日 — -n is an argument to [ , which is the name of command used here. Or actually an alias to the test command which additionally requires a ...
2019年5月17日 — What is the purpose of -n and where can I find some documentation on it? I am guessing that the flag is checking for a null or empty string.
2023年12月6日 — The '-n' option in bash is used to read commands but not execute them, such as echo -n 'Hello' . It's like a rehearsal for your bash scripts, ...
2012年5月7日 — -n is one of the string operators for evaluating the expressions in Bash. It tests the string next to it and evaluates it as True if string is ...