How to copy the contents of all files with a certain name into a new file?





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What I want to do is search for all the files whose name meet a certain requirement (starts with 's', followed by either a '1' or a '2' and end with 'sh') and then copy the contents of all those files into a new file, (name ending with .txt).



So far, what I think it should look like is this:



cat / "s[1-2]*sh" >> /home/admin/Desktop/myFile.txt


But it does not work, reporting



cat: /: Is a directory


I'm completely out of ideas. I'm running ubuntu 18.04.1






linux







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  • All files everywhere or all files in a certain directory?

    – Jesse_b
    Apr 13 at 17:58











  • All files everywhere

    – Eleuis
    Apr 13 at 18:00


















2















What I want to do is search for all the files whose name meet a certain requirement (starts with 's', followed by either a '1' or a '2' and end with 'sh') and then copy the contents of all those files into a new file, (name ending with .txt).



So far, what I think it should look like is this:



cat / "s[1-2]*sh" >> /home/admin/Desktop/myFile.txt


But it does not work, reporting



cat: /: Is a directory


I'm completely out of ideas. I'm running ubuntu 18.04.1






linux







share|improve this question









New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • All files everywhere or all files in a certain directory?

    – Jesse_b
    Apr 13 at 17:58











  • All files everywhere

    – Eleuis
    Apr 13 at 18:00














2












2








2








What I want to do is search for all the files whose name meet a certain requirement (starts with 's', followed by either a '1' or a '2' and end with 'sh') and then copy the contents of all those files into a new file, (name ending with .txt).



So far, what I think it should look like is this:



cat / "s[1-2]*sh" >> /home/admin/Desktop/myFile.txt


But it does not work, reporting



cat: /: Is a directory


I'm completely out of ideas. I'm running ubuntu 18.04.1






linux







share|improve this question









New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












What I want to do is search for all the files whose name meet a certain requirement (starts with 's', followed by either a '1' or a '2' and end with 'sh') and then copy the contents of all those files into a new file, (name ending with .txt).



So far, what I think it should look like is this:



cat / "s[1-2]*sh" >> /home/admin/Desktop/myFile.txt


But it does not work, reporting



cat: /: Is a directory


I'm completely out of ideas. I'm running ubuntu 18.04.1






linux




linux






share|improve this question









New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited Apr 13 at 18:59









ctrl-alt-delor

12.5k52663




12.5k52663






New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked Apr 13 at 17:36









EleuisEleuis

133




133




New contributor




Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Eleuis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.













  • All files everywhere or all files in a certain directory?

    – Jesse_b
    Apr 13 at 17:58











  • All files everywhere

    – Eleuis
    Apr 13 at 18:00



















  • All files everywhere or all files in a certain directory?

    – Jesse_b
    Apr 13 at 17:58











  • All files everywhere

    – Eleuis
    Apr 13 at 18:00

















All files everywhere or all files in a certain directory?

– Jesse_b
Apr 13 at 17:58





All files everywhere or all files in a certain directory?

– Jesse_b
Apr 13 at 17:58













All files everywhere

– Eleuis
Apr 13 at 18:00





All files everywhere

– Eleuis
Apr 13 at 18:00










1 Answer
1






active

oldest

votes


















6














To concatenate the files in your current directory:



cat s[12]*sh > /home/admin/Desktop/myFile.txt


To find and concatenate the files in your current directory and subdirectories:



find . -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;


To find and concatenate the files everywhere:



find / -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;





share|improve this answer



















  • 3





    note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

    – ilkkachu
    Apr 13 at 18:07











  • It works perfectly, thank you

    – Eleuis
    Apr 13 at 18:08






  • 1





    To accept an answer click the ✓

    – ctrl-alt-delor
    Apr 13 at 18:31






  • 1





    -exec cat {} + would be more efficient as it would call cat as few times as possible.

    – Kusalananda♦
    Apr 13 at 19:26












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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









6














To concatenate the files in your current directory:



cat s[12]*sh > /home/admin/Desktop/myFile.txt


To find and concatenate the files in your current directory and subdirectories:



find . -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;


To find and concatenate the files everywhere:



find / -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;





share|improve this answer



















  • 3





    note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

    – ilkkachu
    Apr 13 at 18:07











  • It works perfectly, thank you

    – Eleuis
    Apr 13 at 18:08






  • 1





    To accept an answer click the ✓

    – ctrl-alt-delor
    Apr 13 at 18:31






  • 1





    -exec cat {} + would be more efficient as it would call cat as few times as possible.

    – Kusalananda♦
    Apr 13 at 19:26
















6














To concatenate the files in your current directory:



cat s[12]*sh > /home/admin/Desktop/myFile.txt


To find and concatenate the files in your current directory and subdirectories:



find . -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;


To find and concatenate the files everywhere:



find / -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;





share|improve this answer



















  • 3





    note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

    – ilkkachu
    Apr 13 at 18:07











  • It works perfectly, thank you

    – Eleuis
    Apr 13 at 18:08






  • 1





    To accept an answer click the ✓

    – ctrl-alt-delor
    Apr 13 at 18:31






  • 1





    -exec cat {} + would be more efficient as it would call cat as few times as possible.

    – Kusalananda♦
    Apr 13 at 19:26














6












6








6







To concatenate the files in your current directory:



cat s[12]*sh > /home/admin/Desktop/myFile.txt


To find and concatenate the files in your current directory and subdirectories:



find . -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;


To find and concatenate the files everywhere:



find / -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;





share|improve this answer













To concatenate the files in your current directory:



cat s[12]*sh > /home/admin/Desktop/myFile.txt


To find and concatenate the files in your current directory and subdirectories:



find . -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;


To find and concatenate the files everywhere:



find / -name "s[12]*sh" -exec cat '{}' > /home/admin/Desktop/myFile.txt ;






share|improve this answer












share|improve this answer



share|improve this answer










answered Apr 13 at 18:00









FreddyFreddy

1,989210




1,989210








  • 3





    note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

    – ilkkachu
    Apr 13 at 18:07











  • It works perfectly, thank you

    – Eleuis
    Apr 13 at 18:08






  • 1





    To accept an answer click the ✓

    – ctrl-alt-delor
    Apr 13 at 18:31






  • 1





    -exec cat {} + would be more efficient as it would call cat as few times as possible.

    – Kusalananda♦
    Apr 13 at 19:26














  • 3





    note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

    – ilkkachu
    Apr 13 at 18:07











  • It works perfectly, thank you

    – Eleuis
    Apr 13 at 18:08






  • 1





    To accept an answer click the ✓

    – ctrl-alt-delor
    Apr 13 at 18:31






  • 1





    -exec cat {} + would be more efficient as it would call cat as few times as possible.

    – Kusalananda♦
    Apr 13 at 19:26








3




3





note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

– ilkkachu
Apr 13 at 18:07





note that find -exec cat {} > out.txt ; is exactly equivalent to find -exec cat {} ; > out.txt as the shell processes the redirection before find runs, and it applies to the whole find process. So you might as well put the ; before the redirection for clarity. Also, you can use -exec cat {} + to have find pass more than one file name to each cat invocation. The effect is the same, but it can be faster for large numbers of files.

– ilkkachu
Apr 13 at 18:07













It works perfectly, thank you

– Eleuis
Apr 13 at 18:08





It works perfectly, thank you

– Eleuis
Apr 13 at 18:08




1




1





To accept an answer click the ✓

– ctrl-alt-delor
Apr 13 at 18:31





To accept an answer click the ✓

– ctrl-alt-delor
Apr 13 at 18:31




1




1





-exec cat {} + would be more efficient as it would call cat as few times as possible.

– Kusalananda♦
Apr 13 at 19:26





-exec cat {} + would be more efficient as it would call cat as few times as possible.

– Kusalananda♦
Apr 13 at 19:26










Eleuis is a new contributor. Be nice, and check out our Code of Conduct.










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