__audit_inode (9)    - store the inode and device from a lookup
__scsi_device_lookup (9) - find a device given the host (UNLOCKED)
__scsi_device_lookup_by_target (9) - find a device given the target (UNLOCKED)
ata_scsi_find_dev (9) - lookup ata_device from scsi_cmnd
clk_get (9)          - lookup and obtain a reference to a clock producer.
Config::Extensions (3perl) - hash lookup of which core extensions were built.
d_add_ci (9)         - lookup or allocate new dentry with case-exact name
d_alloc_pseudo (9)   - allocate a dentry (for lookup-less filesystems)
d_hash_and_lookup (9) - hash the qstr then search for a dentry
d_lookup (9)         - search for a dentry
devm_clk_get (9)     - lookup and obtain a managed reference to a clock produ...
dict_lookup (1)      - DICT Protocol Client
dig (1)              - DNS lookup utility
dnsip (1)            - lookup IP addresses
dnsipq (1)           - dns lookup tool
dnsname (1)          - does a reverse lookup for the IP address
dnstrace (1)         - dns lookup tool
dnstracesort (1)     - dns lookup tool
doveadm-user (1)     - Perform a user lookup in Dovecot's userdbs
errstr (1ssl)        - lookup error codes
find_get_pages_contig (9) - gang contiguous pagecache lookup
follow_pfn (9)       - look up PFN at a user virtual address
Geo::IP (3pm)        - Look up location and network information by IP Address
geoiplookup (1)      - look up country using IP Address or hostname
geoiplookup6 (1)     - look up country using IP Address or hostname
host (1)             - DNS lookup utility
hosts (5)            - static table lookup for hostnames
idr_get_next (9)     - lookup next object of id to given id.
ilookup (9)          - search for an inode in the inode cache
ilookup5 (9)         - search for an inode in the inode cache
ilookup5_nowait (9)  - search for an inode in the inode cache
look (1)             - display lines beginning with a given string
lookup_bdev (9)      - lookup a struct block_device by name
lookup_dcookie (2)   - return a directory entry's path
lookup_one_len (9)   - filesystem helper to lookup single pathname component
lookup_one_len_unlocked (9) - filesystem helper to lookup single pathname com...
lookup_resource (9)  - find an existing resource by a resource start address
Mail::Box::Dbx (3pm) - read Outlook Express folders
Mail::SpamAssassin::Plugin::AskDNS (3pm) - form a DNS query using tag values,...
Mail::SpamAssassin::Plugin::ASN (3pm) - SpamAssassin plugin to look up the Au...
Mail::SpamAssassin::Plugin::DNSEval (3pm) - look up URLs against DNS blocklists
Mail::SpamAssassin::Plugin::URIDNSBL (3pm) - look up URLs against DNS blocklists
ModPerl::MethodLookup (3pm) - - Lookup mod_perl modules, objects and methods
Module::Load::Conditional (3perl) - Looking up module information / loading a...
mptscsih_get_scsi_lookup (9) - retrieves scmd entry
mptscsih_getclear_scsi_lookup (9) - retrieves and clears scmd entry from Scsi...
mptscsih_set_scsi_lookup (9) - write a scmd entry into the ScsiLookup[] array...
nmblookup (1)        - NetBIOS over TCP/IP client used to lookup NetBIOS names
nslookup (1)         - query Internet name servers interactively
perldoc (1)          - Look up Perl documentation in Pod format.
pgrep (1)            - look up or signal processes based on name and other at...
pkill (1)            - look up or signal processes based on name and other at...
Pod::Perldoc (3perl) - Look up Perl documentation in Pod format.
postmap (1)          - Postfix lookup table management
proxymap (8postfix)  - Postfix lookup table proxy server
pwm_get (9)          - look up and request a PWM device
regulator_get (9)    - lookup and obtain a reference to a regulator.
regulator_register_supply_alias (9) - Provide device alias for supply lookup
SCPNT_TO_LOOKUP_IDX (9) - searches for a given scmd in the ScsiLookup[] array...
scsi_device_lookup (9) - find a device given the host
scsi_device_lookup_by_target (9) - find a device given the target
scsi_host_lookup (9) - get a reference to a Scsi_Host by host no
Search::Dict (3perl) - look - search for key in dictionary file
selabel_lookup (3)   - obtain SELinux security context from a string label
selabel_lookup_raw (3) - obtain SELinux security context from a string label
snd_lookup_minor_data (9) - get user data of a registered device
socketmap_table (5)  - Postfix socketmap table lookup client
sockfd_lookup (9)    - Go from a file number to its socket slot
sparse_keymap_entry_from_keycode (9) - perform sparse keymap lookup
sparse_keymap_entry_from_scancode (9) - perform sparse keymap lookup
spi_busnum_to_master (9) - look up master associated with bus_num
SSL_want_x509_lookup (3ssl) - obtain state information TLS/SSL I/O operation
svnlook (1)          - Subversion repository examination tool
tcp_table (5)        - Postfix client/server table lookup protocol
Type::Registry (3pm) - a glorified hashref for looking up type constraints
vfs_path_lookup (9)  - lookup a file path relative to a dentry-vfsmount pair
X509_NAME_entry_count (3ssl) - X509_NAME lookup and enumeration functions
X509_NAME_get_entry (3ssl) - X509_NAME lookup and enumeration functions
X509_NAME_get_index_by_NID (3ssl) - X509_NAME lookup and enumeration functions
X509_NAME_get_index_by_OBJ (3ssl) - X509_NAME lookup and enumeration functions
X509_NAME_get_text_by_NID (3ssl) - X509_NAME lookup and enumeration functions
X509_NAME_get_text_by_OBJ (3ssl) - X509_NAME lookup and enumeration functions
xprt_lookup_rqst (9) - find an RPC request corresponding to an XID