Linux Bash Common test judgment options

Test options after the IF [] in bash programming:

1. Integer test:

-le less    equal-lt less    than-ge    Greater equal-GT    greater than- eq    equal-ne not    equal

2. Character test

==!=><-n    tests whether null -s    tests are not empty

3. File test

-e    file exists -f is    normal file -d Specifies whether the path is    a directory -r    file is readable for the current user - W     file is writable to the current user whether    the-x file is executable to the current user

Linux Bash Common test judgment options