grep and cut text from unstructured file?

Question

From below 3lines I need to grep and cut jar file name only. How to grep jar name from the line and cut from there.

Downloading:https://repo.maven.apache.org/maven2/org/springframework/spring-aop/5.0.6.RELEASE/spring-aop-5.0.6.RELEASE.jar   
    Downloaded:https://repo.maven.apache.org/maven2/org/springframework/spring-aspects/5.0.6.RELEASE/spring-aspects-5.0.6.RELEASE.jar (46 KB at 12.6 KB/sec)
    Downloading:https://repo.maven.apache.org/maven2/org/springframework/security/spring-security-config/5.0.5.RELEASE/spring-security-config-5.0.5.RELEASE.jar
640/1052 KB   2580/6582 KB

Answer 1

awk -F'.jar' '/.jar/{print $1".jar"}' file |awk '{print $NF}' FS=/

The first awk display only the lines that contain ".jar", and display them until the name of the jar file

The second awk remove everything from the beginning of the line until the las occurrence of "/", and only left the name of the jar file

Answer 2

If your grep supports the -o (--only-matching) command line option, and you want to output a sequence of non-/ characters terminating in .jar, then you can use

grep -o '[^/]*\.jar\b' file

Answer 3

perl -ne 'print $1 if /([^\/]*\.jar\s)/' file

If you want your results in one line ( useful when trying to create an array of the names matching the pattern )

Or, print it in different lines

perl -ne 'print "$1\n" if /([^\/]*\.jar)/' file

Answer 4

Using standard sed:

$ sed -nE '/\.jar/{ s%.*/(.+\.jar).*%\1%p; }' file
spring-aop-5.0.6.RELEASE.jar
spring-aspects-5.0.6.RELEASE.jar
spring-security-config-5.0.5.RELEASE.jar

This finds lines that contain the string .jar and performs a substitution on them. The substitution replaces the whole line with only the filename portion of the line. It is assumed that the filename is the only thing that contains the string .jar on the line.