how to know number of access to "Xfile" using http*?

[Windows]

hello,

some command as

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cat /var/log/httpd/access_log | grep 'myprogram.exe'

for get number of acces to my file from WEB?

and if I have N programs? (program_version1.exe, program_version2, program_july_2022.exe, ...)

is valid run:

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cat /var/log/httpd/access_log | grep '*program*.exe'

???

[TrevorH]

cat /var/log/httpd/access_log | grep '*program*.exe'

This is what is known as a 'useless use of cat' since it's entirely unnecessary. And, yes, grep can take a pattern for the string you want to search for. It will also quite happily just return the _count_ of the number of hits it finds without listing them all - since your question says you want to know the number of accesses.

So something like

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grep -c 'program.*\.exe'  /var/log/httpd/access_log

[Whoever]

is valid run:

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cat /var/log/httpd/access_log | grep '*program*.exe'

???

Adding to what Trevor said: grep does not use globs/wildcards. It uses regular expressions (different regex formats can be selected with command line options). So "*" just means 0 or more instances of the prior character, which means, when used after the "m", zero or more "m" characters. The "." means any character.

[Windows]

thanks,
many times I was open (download) the file https://web.com/downloads/program_version1.exe
but when I run

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grep -c 'program.*\.exe'  /var/log/httpd/access_log

the result is

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[root@centos ~]# grep -c 'program.*\.exe'  /var/log/httpd/access_log
0
[root@centos ~]#

my config in apache is wrong?

[TrevorH]

Who knows! Try the grep witout the -c and change the pattern to search for to the exact name of the thing you downloaded. If it doesn't show up then either you're not on the right server or you're looking at the wrong log file.

[Whoever]

thanks,
many times I was open (download) the file https://web.com/downloads/program_version1.exe
but when I run

Code: Select all

grep -c 'program.*\.exe'  /var/log/httpd/access_log

the result is

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[root@centos ~]# grep -c 'program.*\.exe'  /var/log/httpd/access_log
0
[root@centos ~]#

my config in apache is wrong?

You are downloading from an https URL. The logs for this probably go into a different file.

[jlehtone]

If log entries are in some file in /var/log/httpd/, then:

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grep -r 'program.*\.exe'  /var/log/httpd

That is, recursively check every file under that directory. Alternatively:

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grep 'program.*\.exe'  /var/log/httpd/*

each file in that directory (since we don't care about subdirectories).

Either way, the output contains also filename for each match.
When you know which file has something, you can start to count that file.

[Whoever]

If log entries are in some file in /var/log/httpd/, then:

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grep -r 'program.*\.exe'  /var/log/httpd

That is, recursively check every file under that directory. Alternatively:

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grep 'program.*\.exe'  /var/log/httpd/*

each file in that directory (since we don't care about subdirectories).

Either way, the output contains also filename for each match.
When you know which file has something, you can start to count that file.

Probably want to use "zgrep", not "grep", because older log files are probably compressed.

[TrevorH]

The suggestion about the log file name is good - the default log file for SSL access is ssl_access_log.

[jlehtone]

Probably want to use "zgrep", not "grep", because older log files are probably compressed.

That is a very good point and applies more generally to logs too, not just to httpd.

Although:
* If one is not interested in older logs, then skipping them due to compression is ok.
* The default logrotate rules in CentOS 7 do not have 'compress' on.


The default 'ssl.conf' sets some filenames for HTTPS:

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# grep -A1 "^[^# ].*Log" /etc/httpd/conf.d/*
/etc/httpd/conf.d/ssl.conf:ErrorLog logs/ssl_error_log
/etc/httpd/conf.d/ssl.conf:TransferLog logs/ssl_access_log
/etc/httpd/conf.d/ssl.conf-LogLevel warn
--
/etc/httpd/conf.d/ssl.conf:CustomLog logs/ssl_request_log \
/etc/httpd/conf.d/ssl.conf-          "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"

The logs/ssl_access_log is from Apache's viewpoint and is /var/log/httpd/ssl_access_log to us.