You'll be happy to know that questons 1 and 3 can be addressed with the "find" command. It is a wonderful command. The find command has the following syntax:
find <starting directory> <tests> [-exec <command> \
To list all files from the current directory downward enter:
find .
To find and delete all of the core files from the root directory throughout the entire file system type:
find / -name core -exec delete {} \;
On to your questions:
1) find files by name:
# find <starting directory> -name <name>
find files by date: several possibilities:
find files by last accessed date where "n" in the example means periods of 24 hours in the past starting now, not starting at midnight this morning:
# find <starting directory> -atime <n>
find files by the date that they were last modified where, again, "n" represents periods of 24 hours in the past starting now:
# find <starting directory> -mtime n
find files that are newer than a file named "testfile":
# find <starting directory> -newer testfile
find files with exactly a certain permission such as 770:
# find <starting directory> -perm <permission,either octal or symbolic>
find files with at least a certain permission such as all files that have 7 in the owner field and any other permission in the other fields:
# find <starting directory> -perm -<permissions>
find files with any of certain permission bits set:
# find <starting directory> -perm +<permissions>
We might as well do question 4 here because we use the find command for those as well.
find files with SUID or SGID bits set:
# find <starting directory> -perm 6000
find files with SUID but not SGID bits set:
# find <starting directory> -perm 4000
find files with SGID bit but not SUI
# find <starting directory> -perm 2000
find files with the "sticky" bit set:
# find <starting directory> -perm 1000
OK so that's questions 1 & 4.
System and Security
1. find files by name, by date and by file permission type?
2. be able to use grep and awk in combination to filter output from system commands?
3. locate user logon id's that have no password?
4. locate files that have SUID or SGID settings?
This conversation is currently closed to new comments.