Given a logfile.txt, I want to extract the java script name only; e.g. filename.js using a bash scri-CodePudding

I use following awk script to do so,

for line in $1
do
 grep -F ".js" $1 | awk '{print $7}' | sort -u 
done

the out put is almost there:

/blog/wp-includes/js/swfobject.js?ver=2.2
/fla/AC_RunActiveContent.js
/include/jquery.js
/include/jquery.jshowoff2.js
/include/jquery.jshowoff.min.js
/include/js/jquery.lightbox-0.5.js
/scripts/ac_runactivecontent.js

I tried piping: cut -d "/" -f5 intead of awk, but parts of script name are cut off as well.

ac_runactivecontent.js HTTP
AC_RunActiveContent.js HTTP
jquery.jshowoff2.js HTTP
jquery.jshowoff.min.js HTTP
jquery.js HTTP
js
wp-includes

How would I go about extracting from the pattern .js to the delimiter "/" so that I only get the script file name:

swfobject.js
AC_RunActiveContent.js
jquery.js
jquery.jshowoff2.js
jquery.jshowoff.min.js
jquery.lightbox-0.5.js
ac_runactivecontent.js

CodePudding user response：

Try

basename

and

man basename

command.

CodePudding user response：

Probably going to be more efficient to look at replacing the current for/grep/awk/sort with a single awk (and optional sort).

Setup:

$ cat filename.js
1 2 3 4 5 6 /blog/wp-includes/js/swfobject.js?ver=2.2 8 9 10
ignore this line
1 2 3 4 5 6 /fla/AC_RunActiveContent.js 8 9 10
1 2 3 4 5 6 /include/jquery.js 8 9 10
ignore this line
1 2 3 4 5 6 /include/jquery.jshowoff2.js 8 9 10
1 2 3 4 5 6 /include/jquery.jshowoff.min.js 8 9 10
ignore this line
1 2 3 4 5 6 /include/js/jquery.lightbox-0.5.js 8 9 10
1 2 3 4 5 6 /scripts/ac_runactivecontent.js 8 9 10

One awk idea:

awk '
/.js/ { n=split($7,a,"[/?]")          # split field #7 on dual characters "/" and "?", putting substrings into array a[]
        for (i=n;i>=1;i--)            # assuming desired string is toward end of $7 we will work backward through the array
        if (a[i] ~ ".js") {           # if we find a match then ...
           print a[i]                 # print it and break out of the loop ...
           next                       # by going to next input record
        }
      }
' filename.js

# or as a single line:

awk '/.js/ {n=split($7,a,"[/?]"); for (i=n;i>=1;i--) if (a[i] ~ ".js") { print a[i]; next}}' filename.js

This generates:

swfobject.js
AC_RunActiveContent.js
jquery.js
jquery.jshowoff2.js
jquery.jshowoff.min.js
jquery.lightbox-0.5.js
ac_runactivecontent.js

NOTE: OP can pipe the results to sort if desired