Linux httpd command

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The Linux httpd command is the Apache HTTP server program.

httpd is the Apache HTTP server program. Directly executing the program can start the service of the server.

Syntax

httpd [-hlLStvVX][-c<httpd command>][-C<httpd command>][-d<server root directory>][-D<configuration file parameters>][-f<configuration file>]

Parameter description:

• -c<httpd command> Execute the command in the option before reading the configuration file.
• -C<httpd command> Execute the command in the option after reading the configuration file.
• -d<server root directory> Specify the root directory of the server.
• -D<configuration file parameters> Specify the parameters to be passed to the configuration file.
• -f<configuration file> Specify the configuration file.
• -h Display help.
• -l Display the modules included when the server was compiled.
• -L Display the descriptions of httpd commands.
• -S Display the settings in the configuration file.
• -t Test whether the syntax of the configuration file is correct.
• -v Display version information.
• -V Display version information and build environment.
• -X Start the server as a single program.

Online examples

Check for configuration file syntax errors

# httpd -t
httpd: Could not determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
Syntax OK

Start httpd

httpd
httpd: Could not determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

Display compiled modules

# httpd -l 
Compiled in modules:
 core.c
 prefork.c
 http_core.c
 mod_so.c

Display configuration file

# httpd -L>1.log|tail -n 20 1.log
Maximum number of children alive at the same time
Allowed in *.conf only outside, or 
ServerLimit (prefork.c)
Maximum value of MaxClients for this run of Apache
Allowed in *.conf only outside, or 
KeepAliveTimeout (http_core.c)
Keep-Alive timeout duration (sec)
Allowed in *.conf only outside, or 
MaxKeepAliveRequests (http_core.c)
Maximum number of Keep-Alive requests per connection, or 0 for infinite
Allowed in *.conf only outside, or 
KeepAlive (http_core.c)
Whether persistent connections should be On or Off
Allowed in *.conf only outside, or 
LoadModule (mod_so.c)
a module name and the name of a shared object file to load it from
Allowed in *.conf only outside, or 
LoadFile (mod_so.c)
shared object file or library to load into the server at runtime
Allowed in *.conf only outside, or 

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