Sample manual, just type the sed and press enter or man sed:
sed
Usage: sed [OPTION]... {script-only-if-no-other-script} [input-file]...
-n, --quiet, --silent
suppress automatic printing of pattern space
-e script, --expression=script
add the script to the commands to be executed
-f script-file, --file=script-file
add the contents of script-file to the commands to be executed
--follow-symlinks
follow symlinks when processing in place; hard links
will still be broken.
-i[SUFFIX], --in-place[=SUFFIX]
edit files in place (makes backup if extension supplied).
The default operation mode is to break symbolic and hard links.
This can be changed with --follow-symlinks and --copy.
-c, --copy
use copy instead of rename when shuffling files in -i mode.
While this will avoid breaking links (symbolic or hard), the
resulting editing operation is not atomic. This is rarely
the desired mode; --follow-symlinks is usually enough, and
it is both faster and more secure.
-l N, --line-length=N
specify the desired line-wrap length for the `l' command
--posix
disable all GNU extensions.
-r, --regexp-extended
use extended regular expressions in the script.
-s, --separate
consider files as separate rather than as a single continuous
long stream.
-u, --unbuffered
load minimal amounts of data from the input files and flush
the output buffers more often
--help display this help and exit
--version output version information and exit
If no -e, --expression, -f, or --file option is given, then the first
non-option argument is taken as the sed script to interpret. All
remaining arguments are names of input files; if no input files are
specified, then the standard input is read.
GNU sed home page: <http://www.gnu.org/software/sed/>.
General help using GNU software: <http://www.gnu.org/gethelp/>.
How to use sed command for extracting the URL’s:
Just extract the URL’s from access.log: We’ve one file called access.log with below mention data/line.
access.log:
Hello tutorialbyexample, home page access by GET http://www.tutorialbyexample.com/success HTTP 200
This is the success page of five success by POST http://www.tutorialbyexample.com/2015/09/five-5-success-factor.htmlHTTP 200
Hello tutorialbyexample, home page access by GET http://www.tutorialbyexample.com/success HTTP 200
This is the success page of five success by POST http://www.tutorialbyexample.com/2015/09/five-5-success-factor.htmlHTTP 200
Hello tutorialbyexample, home page access by GET http://www.tutorialbyexample.com/
This is the success page of five success by POST http://www.tutorialbyexample.com/2015/09/five-5-success-factor.html
Hello tutorialbyexample, home page access by GET http://www.tutorialbyexample.com/
Output:
Command:
cat access.log | sed 's/.*GET //' | sed 's/.*POST //' | sed 's/success HTTP 200//' | sed 's/ HTTP 200//' > access_200.log
Explanations:
cat access.log:For reading the file.
sed 's/.*GET //' search the data from beginning till GET and replace with nothing.
sed 's/.*POST //'search the data from beginning till GET and replace with nothing.
sed 's/success HTTP 200//' search the data starting from success HTTP 200 and replace with nothing.
sed 's/ HTTP 200//'search the data starting from HTTP 200 and replace with nothing.
> access_200.log will redirect into new file.
| has been used for executing the multiple command in single.
Ref from Unix.
No comments:
Post a Comment