Wildcards and special characters in shell

Shell wildcards and special characters 1. wildcards are also very useful in the bash operating environment, that is, wildcards (wildcard )! We can use bash to process data more conveniently! Below we will list some common wildcard characters. Example: [html] (1) find/e... shell wildcards and special characters 1. wildcards are also very useful in the bash operating environment, that is, wildcards (wildcard )! We can use bash to process data more conveniently! Below we will list some common wildcard characters. Example: [html] (1) locate the file name starting with cron under/etc: # ll-d/etc/cron * <= Add-d to only display the Directory (2) find the file name with the "exactly five letters" under/etc: # ll-d/etc /????? <= Because? There must be one, so five? Right (3) find the names of all numbers in the file name under/etc: # ll-d/etc/* [0-9] * <= remember that the left and right sides of the brackets need to * (4) Find the/etc/bottom, file name starting with a non-lowercase letter: # ll-d/etc/[^ a-z] * <== note that there is no * 2. what is in the bash environment except the special symbol wildcard? What are the special symbols? Next we will summarize the information: