Find how many files with specific user\/group ownership and permissions are in current directory and subfolders:<\/p>\n
find . -user USERNAME -group GROUPNAME -perm 644 |wc -l\n<\/code><\/pre>\nFind FILES with specific permissions in current directory and subfolders:<\/strong><\/p>\nfind . -type f -perm 640\n<\/code><\/pre>\nChange file owner and group for files\/directories which group membership is oldgroup<\/em><\/strong><\/p>\nfind . -group oldgroup -exec chown newuser:newgroup '{}' \\;\n<\/code><\/pre>\nFind and delete files\/directories which are over 62 days old<\/strong><\/p>\nfind . -mtime +62 -exec rm '{}' \\; > \/dev\/null 2>&1 \n<\/code><\/pre>\nFind and delete files not having .gz extension<\/strong><\/p>\nfind \/foo\/ -type f ! -name \"*.gz\" -exec rm -f '{}' \\;\n<\/code><\/pre>\nFind files with SUID bit<\/strong><\/p>\nfind . -perm -4000\nor\nfind . -perm -4000 -type f<\/code><\/pre>\nfind files and print only file name<\/strong> instead of full path – use formating with printf<\/p>\nfind . -type f -printf '%f\\n'\n<\/code><\/pre>\nthere are many formating options, just run man find<\/em> and search -printf<\/em> in there.<\/p>\nNote – always use single quotes around parenthesis when using -exec like so: -exec rm ‘{}’<\/p>\n
find files and print out file size, permissions, owner ID and last modification time in seconds from unix epoch along with the files md5 hash
<\/strong><\/p>\nfind . -mount -type f -printf \"%k %U %m %T@ \" -exec md5sum {} \\;<\/code><\/pre>\n-mount will not descend directories on other filesystems. Its useful if you have mounted other filesystems, especially network shares to the directory tree.<\/p>\n
Find files with suid bit which are owned by root, executable for group or all, from all local filesystems.<\/strong> Find runs against one local filesystem at the time not decending to other filesystems.<\/p>\n\n\n\n# for fs in `findmnt -it sysfs,cgroup,proc,devtmpfs,devpts,pstore,debugfs,hugetlbfs,mqueue,configfs,autofs,tmpfs,securityfs,sunrpc,fusectl,binfmt_misc,nfs,cifs -o SOURCE,TARGET -n -l |grep \"^\/\"|awk '{print $2}'`; do find ${fs} -type f -perm \/4000 \\( -perm -g=x -o -perm -o=x \\) -mount -uid 0 2>\/dev\/null ;done<\/code><\/pre>\n\n\n\nFind files with SUID or SGID bits from all listed filesystems, print out file permissions, user id group id and file name<\/strong>. This is another way how to find files from all local filesystems. Just include them in the list, currently onlyt xfs, ext2\/3\/4 are there. This example I aklso used mount to list filesystems instead of findmnt.<\/p>\n\n\n\n# for mount in `for t in xfs ext2 ext3 ext4; do mount -l -t ${t};done |awk '{print $3}'`; do find ${mount} -xdev -type f \\( -perm -4000 -o -perm -2000 \\) -exec stat -c \"%a %u %g %n\" '{}' \\; 2>\/dev\/null ;done<\/code><\/pre>\n\n\n\n