Whatis
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| − | See [[apropos]] | + | The '''whatis''' command takes a word or name as a parameter value that is searched against a set of database files that contain short descriptions of system based commands and devices. |
| + | |||
| + | <pre> | ||
| + | mail# whatis fxp | ||
| + | fxp(4) - Intel EtherExpress PRO/100 Ethernet device driver | ||
| + | </pre> | ||
| + | |||
| + | The search method used by whatis will find only complete word matches. This differs to the related apropos command which uses a search method that matches anything containing the given word. An example of these differences using the word "secure": | ||
| + | |||
| + | '''whatis''' | ||
| + | |||
| + | <pre> | ||
| + | mail# whatis secure | ||
| + | _secure_path(3) - determine if a file appears to be secure | ||
| + | rpc_secure(3) - library routines for secure remote procedure calls | ||
| + | scp(1) - secure copy (remote file copy program) | ||
| + | sftp(1) - secure file transfer program | ||
| + | sprog(7) - secure programming practices | ||
| + | SHA1(3), SHA1_Init(3), SHA1_Update(3), SHA1_Final(3) - Secure Hash Algorithm | ||
| + | </pre> | ||
| + | |||
| + | '''apropos''' | ||
| + | |||
| + | <pre> | ||
| + | mail# apropos secure | ||
| + | _secure_path(3) - determine if a file appears to be secure | ||
| + | krb5_verify_user(3), krb5_verify_user_lrealm(3), krb5_verify_user_opt(3), krb5_verify_opt_init krb5_verify_opt_set_ | ||
| + | flags(3), krb5_verify_opt_set_service(3), krb5_verify_opt_set_secure(3), krb5_verify_opt_set_keytab(3) - Heimdal pa | ||
| + | ssword verifying functions | ||
| + | pam_securetty(8) - SecureTTY PAM module | ||
| + | rpc_secure(3) - library routines for secure remote procedure calls | ||
| + | scp(1) - secure copy (remote file copy program) | ||
| + | securelevel_gt(9), securelevel_ge(9) - test active securelevel | ||
| + | sftp(1) - secure file transfer program | ||
| + | sprog(7) - secure programming practices | ||
| + | SHA1(3), SHA1_Init(3), SHA1_Update(3), SHA1_Final(3) - Secure Hash Algorithm | ||
| + | </pre> | ||
| + | |||
| + | This shows how whatis only found whole words for 'secure' whereas apropos found the word within other text, one of which was 'krb5_verify_opt_set_secure(3)'. Both commands search in a case-insensitive manner. | ||
| + | |||
| + | See also [[apropos]] command. | ||
[[Category : System Commands]] | [[Category : System Commands]] | ||
Latest revision as of 10:45, 4 October 2007
The whatis command takes a word or name as a parameter value that is searched against a set of database files that contain short descriptions of system based commands and devices.
mail# whatis fxp fxp(4) - Intel EtherExpress PRO/100 Ethernet device driver
The search method used by whatis will find only complete word matches. This differs to the related apropos command which uses a search method that matches anything containing the given word. An example of these differences using the word "secure":
whatis
mail# whatis secure _secure_path(3) - determine if a file appears to be secure rpc_secure(3) - library routines for secure remote procedure calls scp(1) - secure copy (remote file copy program) sftp(1) - secure file transfer program sprog(7) - secure programming practices SHA1(3), SHA1_Init(3), SHA1_Update(3), SHA1_Final(3) - Secure Hash Algorithm
apropos
mail# apropos secure _secure_path(3) - determine if a file appears to be secure krb5_verify_user(3), krb5_verify_user_lrealm(3), krb5_verify_user_opt(3), krb5_verify_opt_init krb5_verify_opt_set_ flags(3), krb5_verify_opt_set_service(3), krb5_verify_opt_set_secure(3), krb5_verify_opt_set_keytab(3) - Heimdal pa ssword verifying functions pam_securetty(8) - SecureTTY PAM module rpc_secure(3) - library routines for secure remote procedure calls scp(1) - secure copy (remote file copy program) securelevel_gt(9), securelevel_ge(9) - test active securelevel sftp(1) - secure file transfer program sprog(7) - secure programming practices SHA1(3), SHA1_Init(3), SHA1_Update(3), SHA1_Final(3) - Secure Hash Algorithm
This shows how whatis only found whole words for 'secure' whereas apropos found the word within other text, one of which was 'krb5_verify_opt_set_secure(3)'. Both commands search in a case-insensitive manner.
See also apropos command.
