touch in for loop
ls gives me:
10 11 12 12L 13 16 702 702L
etc., and I'd like to create files
10_ 11_ 12_ 12L_ 13_
and so on. But,
$ for f in *; do touch "$f_"; done
gives me:
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
Also,
$ for f in *; do touch $f_; done
gives:
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
I have over 100 files in this directory and haven't intention to do this without script.
bash
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
add a comment |
ls gives me:
10 11 12 12L 13 16 702 702L
etc., and I'd like to create files
10_ 11_ 12_ 12L_ 13_
and so on. But,
$ for f in *; do touch "$f_"; done
gives me:
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
Also,
$ for f in *; do touch $f_; done
gives:
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
I have over 100 files in this directory and haven't intention to do this without script.
bash
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
add a comment |
ls gives me:
10 11 12 12L 13 16 702 702L
etc., and I'd like to create files
10_ 11_ 12_ 12L_ 13_
and so on. But,
$ for f in *; do touch "$f_"; done
gives me:
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
Also,
$ for f in *; do touch $f_; done
gives:
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
I have over 100 files in this directory and haven't intention to do this without script.
bash
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
ls gives me:
10 11 12 12L 13 16 702 702L
etc., and I'd like to create files
10_ 11_ 12_ 12L_ 13_
and so on. But,
$ for f in *; do touch "$f_"; done
gives me:
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
touch: cannot touch '': No such file or directory
Also,
$ for f in *; do touch $f_; done
gives:
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
Try 'touch --help' for more information.
touch: missing file operand
I have over 100 files in this directory and haven't intention to do this without script.
bash
bash
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
edited Dec 18 '18 at 0:45
Stefan Hamcke
3951522
3951522
asked Dec 17 '18 at 22:31
mk1024
177314
asked Dec 17 '18 at 22:31
mk1024
177314
asked Dec 17 '18 at 22:31
mk1024
177314
177314
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You could do it this way:
for f in *; do touch "${f}_"; done
man bash/EXPANSION says:
The braces are required when parameter is a positional parameter with
more than one digit, or when parameter is followed by a character
which is not to be interpreted as part of its name.
However, this calls touch for every single file, which is quite inefficient. A better way is to let printf make a list of the files, zero-delimited in case of weird file names, and call touch only as often as needed with the help of xargs:
printf '%s_' * | xargs -0 touch
answered Dec 17 '18 at 22:43
dessert
22k56198
add a comment |
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1 Answer
1
active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You could do it this way:
for f in *; do touch "${f}_"; done
man bash/EXPANSION says:
The braces are required when parameter is a positional parameter with
more than one digit, or when parameter is followed by a character
which is not to be interpreted as part of its name.
However, this calls touch for every single file, which is quite inefficient. A better way is to let printf make a list of the files, zero-delimited in case of weird file names, and call touch only as often as needed with the help of xargs:
printf '%s_' * | xargs -0 touch
answered Dec 17 '18 at 22:43
dessert
22k56198
add a comment |
You could do it this way:
for f in *; do touch "${f}_"; done
man bash/EXPANSION says:
The braces are required when parameter is a positional parameter with
more than one digit, or when parameter is followed by a character
which is not to be interpreted as part of its name.
However, this calls touch for every single file, which is quite inefficient. A better way is to let printf make a list of the files, zero-delimited in case of weird file names, and call touch only as often as needed with the help of xargs:
printf '%s_' * | xargs -0 touch
answered Dec 17 '18 at 22:43
dessert
22k56198
add a comment |
You could do it this way:
for f in *; do touch "${f}_"; done
man bash/EXPANSION says:
The braces are required when parameter is a positional parameter with
more than one digit, or when parameter is followed by a character
which is not to be interpreted as part of its name.
However, this calls touch for every single file, which is quite inefficient. A better way is to let printf make a list of the files, zero-delimited in case of weird file names, and call touch only as often as needed with the help of xargs:
printf '%s_' * | xargs -0 touch
answered Dec 17 '18 at 22:43
dessert
22k56198
You could do it this way:
for f in *; do touch "${f}_"; done
man bash/EXPANSION says:
The braces are required when parameter is a positional parameter with
more than one digit, or when parameter is followed by a character
which is not to be interpreted as part of its name.
However, this calls touch for every single file, which is quite inefficient. A better way is to let printf make a list of the files, zero-delimited in case of weird file names, and call touch only as often as needed with the help of xargs:
printf '%s_' * | xargs -0 touch
answered Dec 17 '18 at 22:43
dessert
22k56198
edited Dec 17 '18 at 23:15
answered Dec 17 '18 at 22:43
dessert
22k56198
answered Dec 17 '18 at 22:43
dessert
22k56198
answered Dec 17 '18 at 22:43
dessert
22k56198
22k56198
add a comment |
add a comment |
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