| ||ldapsearch - ldap search tool
| ||ldapsearch [-n] [-u] [-v] [-t] [-A] [-B] [-L] [-R] [-d debuglevel] [-F sep] [-f file] [-D binddn] [-w passwd] [-h ldaphost] [-M authentication] [-p ldapport] [-b searchbase] [-s scope] [-a deref] [ -l time limit] [ -z size limit] filter [ attrs ....]
ldapsearch opens a connection
to an LDAP server, binds, and performs a search using the filter filter.
If ldapsearch finds one or more entries, the attributes specified by attrs are retrieved and the entries and values are printed to standard output. If no attrs are listed, all attributes are returned.
If one or more entries are found, each entry is written to standard output in the form:
Distinguished Name (DN)
User Friendly Name (if the -u option is used)
Multiple entries are separated with a single blank line. If the -F option is used to specify a different separator character, this character will be used instead of the `=' character. If the -t option is used, the name of a temporary file is returned in place
of the actual value. If the -A option is given, only the "attributename" is returned and not the attribute value.
- Retrieve attributes only (no values). This is useful when you just want to see whether an attribute is present in an entry and are not interested in the specific value.
- -a deref
- Specify how aliases dereferencing is done. The possible values for deref are never, always, search, or find
to specify respectively that aliases are never dereferenced, always dereferenced, dereferenced when searching, or dereferenced only when finding the base object for the search. The default is to never dereference aliases.
- Do not suppress display of non-ASCII values. This is useful when dealing with values that appear in alternate character sets such as ISO-8859.1. This option is automatically set by the -L option.
- -b searchbase
- Use searchbase as the starting point for the search instead of the default.
- -D binddn
- Use the distinguished name binddn to bind to the directory.
- -d debuglevel
- Set the LDAP debugging level. Useful levels of debugging for ldapsearch are:
- Access control
To request more than one category of debugging information, add the masks. For example, to request trace and filter information, specify a debuglevel of 33.
- -F sep
- Use sep as the field separator between attribute names and values. The default separator is `='. If -L option has been specified, this option is ignored.
- -f file
- Read a series of lines from file, performing one LDAP search for each line. In this case, the filter given on the command line is treated as a pattern where
the first occurrence of %s is replaced with a line from file. If file is a single - character, then the lines are read from standard input.
- -h ldaphost
- Specify an alternate host on which the slapd server is running.
- Display search results in a modified format. This option also turns on the -B option, and causes the -F option to be ignored.
- -l timelimit
- Wait at most timelimit seconds for a search to complete.
- -M authentication
- Specifies the authentication mechanism used to bind to the directory.
The default authentication method for ldapsearch is simple bind. simple bind sends the password to the server in the clear. The password is subject to snooping if the server is not local. You must use special care when you use this command
with the default authentication method. If your server supports the challenge response method CRAM-MD5 authentication method, you can override the default authentication method by using the -M option with CRAM-MD5 as the value for authentication.
The bind DN and bind password are mandatory with this option.
- Show what would be done, but do not actually perform the search. Useful in conjunction with -v and -d for debugging.
- -p ldapport
- Specify an alternate TCP port where the slapd server is listening.
- Do not automatically follow referrals returned while searching.
- -s scope
- Specify the scope of the search. The possible values of scope are base, one, or sub to specify respectively a base object,
one-level, or subtree search. The default is sub.
- Write retrieved values to a set of temporary files. This is useful for dealing with non-ASCII values such as jpegPhoto or audio.
- Include the user-friendly form of the Distinguished Name (DN) in the output.
- Run in verbose mode, with diagnostics written to standard output.
- -w passwd
- Use passwd as the password for authentication to the directory. When you use -w passwd to specify the password to be used for authentication,
the password is visible to other users of the system by means of the ps command, in script files or in shell history. If you use the ldapsearch command without this option, the command will prompt for the password and read it from standard in. When used without the -w option, the password will not be visible to other users.
- -z sizelimit
- Retrieve at most sizelimit entries for a search to complete.
| ||Example 1. Performing a Subtree Search
Example 2. Performing a Subtree Search Using the Default Search Base
The following command performs a subtree search (using the default search base) for entries with a commonName of "mark smith". The commonName and telephoneNumber values will be retrieved and printed to standard output.
example% ldapsearch "cn=mark smith" cn telephoneNumber
The output looks something like this:
cn=Mark D Smith, ou=Sales, ou=Atlanta, ou=People, o=XYZ, c=US
cn=Mark David Smith
cn=Mark D Smith 1
cn=Mark D Smith
telephoneNumber=+1 123 456-7890
cn=Mark C Smith, ou=Distribution, ou=Atlanta, ou=People, o=XYZ, c=US
cn=Mark C Smith 1
cn=Mark C Smith
telephoneNumber=+1 123 456-9999
Example 3. Performing a One Level Search
The following command performs a subtree search using the default search base for entries with user id of "mcs". The user-friendly form of the entry's DN will be output after the line that contains the DN itself, and the jpegPhoto and audio values will be retrieved and written to temporary files.
example%ldapsearch -u -t "uid=mcs" jpegPhoto audio
The output might look like this if one entry with one value for each of the requested attributes is found:
cn=Mark C Smith, ou=Distribution, ou=Atlanta, ou=People, o=XYZ, c=US
Mark C Smith, Distribution, Atlanta, People, XYZ, US
The following command performs a one-level search at the c=US level for all organizations whose organizationName begins with XY.
example% ldapsearch -L -s one -b "c=US" "o=XY*" o description
Search results are displayed in the LDIF format. The organizationName and description attribute values will be retrieved and printed to standard output, resulting in output similar to this:
dn: o=XYZ, c=US
description: XYZ Corporation
dn: o="XY Trading Company", c=US
o: XY Trading Company
description: Import and export specialists
dn: o=XYInternational, c=US
o: XY International
The following exit values are returned:
- Successful completion.
- An error occurred. A diagnostic message is written to standard error.
See attributes(5) for a description of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE