ls in detail

-a do not hide files starting with a dot
-F show the type of the file with one of these trailing type designators /*@%=| /=directory *=executable @=symbolic link %=whiteout ==socket |=FIFO
-l long listing
-L show information about the linked file, rather than the symbolic link itself
-Q quote names
-r reverse sort order
-R recurse through subdirectories
-S sort by file size
-1 short format but only one file per line


PROBLEM: You want to see only hidden files, those which begin with a dot. ls -a .* doesn't do what you think it will.

SOLUTION 1: Use ls -d
ls -d .*
ls -d .b*
ls -d .[!.]*

SOLUTION 2: construct your wildcard so that . and .. don't match
grep -l 'PATH' ~/.[!.]*
/home/jp/.bash_history
/home/jp/.bash_profile



You can use ? in place of a single character wildcard.
ls -l *.t?t
/home/af/somefile.txt
/home/af/somefile.tat

but will not show
/home/af/somefile.toot

however, if you wanted to, perhaps you'd use
ls -l *.t*t

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