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How do I create files using the lines in a .txt file?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

0

For example I have a file called fileNames.txt. cat >fileNames returns

abet

able

abacus

How do I use fileNames to create abet, able, and abacus as .txt files? I tried using pipes with cat and touch.

shell

share|improve this question

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

add a comment | 

0

For example I have a file called fileNames.txt. cat >fileNames returns

abet

able

abacus

How do I use fileNames to create abet, able, and abacus as .txt files? I tried using pipes with cat and touch.

shell

share|improve this question

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

add a comment | 

For example I have a file called fileNames.txt. cat >fileNames returns

abet

able

abacus

How do I use fileNames to create abet, able, and abacus as .txt files? I tried using pipes with cat and touch.

shell

share|improve this question

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

abet

able

abacus

share|improve this question

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

share|improve this question

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

edited Apr 13 at 15:21

Rui F Ribeiro

42.1k1484142

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

asked Oct 2 '15 at 3:32

I'm a noobI'm a noob

497

3 Answers
3

active

oldest

votes

4

There are numerous ways to do that, including the following (assuming GNU xargs):

sed -e '/^[[:space:]]*$/d' -e 's/$/.txt/' fileNames.txt | xargs -rd 'n' touch --

This assumes that there is only one filename per line in fileNames.txt. The sed script deletes blank lines (thanks to @rubynorails) and adds '.txt' to the end of each filename before piping them to xargs touch.

By using the -d 'n' option with xargs (a GNU extension, which tells xargs to use only newline or 'n' as the delimiter rather than any whitespace, and disables quote processing) this even copes with filenames that have spaces and other potentially-problematic characters (except for n or newline itself). e.g. if a line contained 'abet able', without -d 'n', two files (abet and able.txt) would be created. With it, only one file abet able.txt will be created.

share|improve this answer

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. This answer is probably the easiest to understand. sed and xargs were the two things I was missing. I had the right conceptual stuff, just not the commands to do it. xargs seems like a really powerful command.
  
  – I'm a noob
  Oct 2 '15 at 3:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  yes, xargs is extremely useful.
  
  – cas
  Oct 2 '15 at 3:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  using xargs is also more efficient than a for or while etc loop around touch - it executes only one touch command per many hundreds of filenames rather than one touch per filename.
  
  – cas
  Oct 2 '15 at 4:07
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Wow that's waaaaay more efficient. Thanks for the help.
  
  – I'm a noob
  Oct 2 '15 at 4:49
  

  
  
  
  

add a comment | 

3

You can use an input redirection in a while loop with the read command

while read line; do
 touch "$line.txt"
done < fileNames.txt

share|improve this answer

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is much cleaner and more portable than the accepted answer.
  
  – Peschke
  Oct 3 '15 at 10:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Peschke, that is more portable (assuming Bourne-like shells), but not really cleaner. That won't work properly if the lines contain leading or trailing space or tabs, or start with -. That also means running one touch command per file.
  
  – Stéphane Chazelas
  Jun 28 '17 at 8:31
  

  
  
  
  

add a comment | 

1

awk 'NF>0' fileNames.txt | while read line; do touch "$line.txt"; done

The awk command just gets rid of the empty lines.

To the best of my knowledge, these lines are also literal, so whatever is on the line is getting written as a file name.

share|improve this answer

edited Oct 2 '15 at 3:51

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Emmanuel Dieguez's answer should work as well (without using awk), but on extremely large files, removing empty lines before cycling through each one in a while loop may speed things up a bit.
  
  – rubynorails
  Oct 2 '15 at 3:46
  

  
  
  
  

add a comment | 

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4

There are numerous ways to do that, including the following (assuming GNU xargs):

sed -e '/^[[:space:]]*$/d' -e 's/$/.txt/' fileNames.txt | xargs -rd 'n' touch --

This assumes that there is only one filename per line in fileNames.txt. The sed script deletes blank lines (thanks to @rubynorails) and adds '.txt' to the end of each filename before piping them to xargs touch.

By using the -d 'n' option with xargs (a GNU extension, which tells xargs to use only newline or 'n' as the delimiter rather than any whitespace, and disables quote processing) this even copes with filenames that have spaces and other potentially-problematic characters (except for n or newline itself). e.g. if a line contained 'abet able', without -d 'n', two files (abet and able.txt) would be created. With it, only one file abet able.txt will be created.

share|improve this answer

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. This answer is probably the easiest to understand. sed and xargs were the two things I was missing. I had the right conceptual stuff, just not the commands to do it. xargs seems like a really powerful command.
  
  – I'm a noob
  Oct 2 '15 at 3:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  yes, xargs is extremely useful.
  
  – cas
  Oct 2 '15 at 3:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  using xargs is also more efficient than a for or while etc loop around touch - it executes only one touch command per many hundreds of filenames rather than one touch per filename.
  
  – cas
  Oct 2 '15 at 4:07
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Wow that's waaaaay more efficient. Thanks for the help.
  
  – I'm a noob
  Oct 2 '15 at 4:49
  

  
  
  
  

add a comment | 

4

There are numerous ways to do that, including the following (assuming GNU xargs):

sed -e '/^[[:space:]]*$/d' -e 's/$/.txt/' fileNames.txt | xargs -rd 'n' touch --

This assumes that there is only one filename per line in fileNames.txt. The sed script deletes blank lines (thanks to @rubynorails) and adds '.txt' to the end of each filename before piping them to xargs touch.

By using the -d 'n' option with xargs (a GNU extension, which tells xargs to use only newline or 'n' as the delimiter rather than any whitespace, and disables quote processing) this even copes with filenames that have spaces and other potentially-problematic characters (except for n or newline itself). e.g. if a line contained 'abet able', without -d 'n', two files (abet and able.txt) would be created. With it, only one file abet able.txt will be created.

share|improve this answer

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. This answer is probably the easiest to understand. sed and xargs were the two things I was missing. I had the right conceptual stuff, just not the commands to do it. xargs seems like a really powerful command.
  
  – I'm a noob
  Oct 2 '15 at 3:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  yes, xargs is extremely useful.
  
  – cas
  Oct 2 '15 at 3:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  using xargs is also more efficient than a for or while etc loop around touch - it executes only one touch command per many hundreds of filenames rather than one touch per filename.
  
  – cas
  Oct 2 '15 at 4:07
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Wow that's waaaaay more efficient. Thanks for the help.
  
  – I'm a noob
  Oct 2 '15 at 4:49
  

  
  
  
  

add a comment | 

There are numerous ways to do that, including the following (assuming GNU xargs):

sed -e '/^[[:space:]]*$/d' -e 's/$/.txt/' fileNames.txt | xargs -rd 'n' touch --

This assumes that there is only one filename per line in fileNames.txt. The sed script deletes blank lines (thanks to @rubynorails) and adds '.txt' to the end of each filename before piping them to xargs touch.

By using the -d 'n' option with xargs (a GNU extension, which tells xargs to use only newline or 'n' as the delimiter rather than any whitespace, and disables quote processing) this even copes with filenames that have spaces and other potentially-problematic characters (except for n or newline itself). e.g. if a line contained 'abet able', without -d 'n', two files (abet and able.txt) would be created. With it, only one file abet able.txt will be created.

share|improve this answer

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

sed -e '/^[[:space:]]*$/d' -e 's/$/.txt/' fileNames.txt | xargs -rd 'n' touch --

share|improve this answer

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

edited Jun 28 '17 at 8:28

Stéphane Chazelas

315k57597955

answered Oct 2 '15 at 3:39

cascas

39.6k456103

answered Oct 2 '15 at 3:39

cascas

39.6k456103

3

You can use an input redirection in a while loop with the read command

while read line; do
 touch "$line.txt"
done < fileNames.txt

share|improve this answer

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is much cleaner and more portable than the accepted answer.
  
  – Peschke
  Oct 3 '15 at 10:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Peschke, that is more portable (assuming Bourne-like shells), but not really cleaner. That won't work properly if the lines contain leading or trailing space or tabs, or start with -. That also means running one touch command per file.
  
  – Stéphane Chazelas
  Jun 28 '17 at 8:31
  

  
  
  
  

add a comment | 

3

You can use an input redirection in a while loop with the read command

while read line; do
 touch "$line.txt"
done < fileNames.txt

share|improve this answer

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is much cleaner and more portable than the accepted answer.
  
  – Peschke
  Oct 3 '15 at 10:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Peschke, that is more portable (assuming Bourne-like shells), but not really cleaner. That won't work properly if the lines contain leading or trailing space or tabs, or start with -. That also means running one touch command per file.
  
  – Stéphane Chazelas
  Jun 28 '17 at 8:31
  

  
  
  
  

add a comment | 

You can use an input redirection in a while loop with the read command

while read line; do
 touch "$line.txt"
done < fileNames.txt

share|improve this answer

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

while read line; do
 touch "$line.txt"
done < fileNames.txt

share|improve this answer

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

answered Oct 2 '15 at 3:43

Emmanuel DiéguezEmmanuel Diéguez

312

1

awk 'NF>0' fileNames.txt | while read line; do touch "$line.txt"; done

The awk command just gets rid of the empty lines.

To the best of my knowledge, these lines are also literal, so whatever is on the line is getting written as a file name.

share|improve this answer

edited Oct 2 '15 at 3:51

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Emmanuel Dieguez's answer should work as well (without using awk), but on extremely large files, removing empty lines before cycling through each one in a while loop may speed things up a bit.
  
  – rubynorails
  Oct 2 '15 at 3:46
  

  
  
  
  

add a comment | 

1

awk 'NF>0' fileNames.txt | while read line; do touch "$line.txt"; done

The awk command just gets rid of the empty lines.

To the best of my knowledge, these lines are also literal, so whatever is on the line is getting written as a file name.

share|improve this answer

edited Oct 2 '15 at 3:51

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Emmanuel Dieguez's answer should work as well (without using awk), but on extremely large files, removing empty lines before cycling through each one in a while loop may speed things up a bit.
  
  – rubynorails
  Oct 2 '15 at 3:46
  

  
  
  
  

add a comment | 

awk 'NF>0' fileNames.txt | while read line; do touch "$line.txt"; done

The awk command just gets rid of the empty lines.

To the best of my knowledge, these lines are also literal, so whatever is on the line is getting written as a file name.

share|improve this answer

edited Oct 2 '15 at 3:51

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

share|improve this answer

edited Oct 2 '15 at 3:51

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516

answered Oct 2 '15 at 3:40

rubynorailsrubynorails

1,292516