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bashunixscriptinggrepcut

Using the grep and cut delimiter command (in bash shell scripting UNIX) - and kind of "reversing" it?

So I have a file with the text: 

puddle2_1557936:/home/rogers.williams/folderz/puddle2

I want to use the grep command

grep puddle2_1557936

Mixed in with the cut command (or another command if neccessary) to display just this part:

/home/rogers.williams/folderz/puddle2

So far, I know that if do this

 grep puddle2_1557936 | cut -d ":" -f1

then it will display

puddle2_1557936

So is there anyway to kind of "inverse" the delimiter cut command?

NOTE: The solution must start off with grep puddle2_15579636.

Solution

  • You don't need to change the delimiter to display the right part of the string with cut.

    The -f switch of the cut command is the n-TH element separated by your delimiter : :, so you can just type :

     grep puddle2_1557936 | cut -d ":" -f2

    Another solutions (adapt it a bit) if you want fun:

    Using :

    grep -oP 'puddle2_1557936:\K.*' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'                                                                        
/home/rogers.williams/folderz/puddle2

    or still with look around 

    grep -oP '(?<=puddle2_1557936:).*' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'                                                                    
/home/rogers.williams/folderz/puddle2

    or with :

    sed -n 's/.*puddle2_1557936:\([^:]*\).*/\1/p' <<<'puddle2_1557936:/home/rogers.williams/folderz/puddle2'                                                      
/home/rogers.williams/folderz/puddle2

    or with :

    perl -lne '/puddle2_1557936:(.*)/ and print $1' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'                                                      
/home/rogers.williams/folderz/puddle2

    or using (thanks to glenn jackman)

    ruby -F: -ane '/puddle2_1557936/ and puts $F[1]' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2

    or with :

    awk -F'puddle2_1557936:' '{print $2}'  <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2

    or with :

    python -c 'import sys; print(sys.argv[1].split("puddle2_1557936:")[1])' 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2

    or using only :

    IFS=: read _ a <<< "puddle2_1557936:/home/rogers.williams/folderz/puddle2"
echo "$a"
/home/rogers.williams/folderz/puddle2

    or using in a :

    js<<EOF
var x = 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
print(x.substr(x.indexOf(":")+1))
EOF
/home/rogers.williams/folderz/puddle2

    or using in a :

    php -r 'preg_match("/puddle2_1557936:(.*)/", $argv[1], $m); echo "$m[1]\n";' 'puddle2_1557936:/home/rogers.williams/folderz/puddle2' 
/home/rogers.williams/folderz/puddle2