In Linux what happens if 1000 files in a directory are moved to another location while another 300 files were...
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In Linux what happens if 1000 files in a directory are moved to another location while another 300 files were added to the source directory?
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In Linux what happens if 1000 files in a directory are moved to another location and another 300 files were added to the source directory while original 1000 files were being moved. Will the destination end up being 1300 files? or will there be 300 files remaining in the source folder.
linux filesystems operating-systems
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
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Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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In Linux what happens if 1000 files in a directory are moved to another location and another 300 files were added to the source directory while original 1000 files were being moved. Will the destination end up being 1300 files? or will there be 300 files remaining in the source folder.
linux filesystems operating-systems
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
In Linux what happens if 1000 files in a directory are moved to another location and another 300 files were added to the source directory while original 1000 files were being moved. Will the destination end up being 1300 files? or will there be 300 files remaining in the source folder.
linux filesystems operating-systems
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
In Linux what happens if 1000 files in a directory are moved to another location and another 300 files were added to the source directory while original 1000 files were being moved. Will the destination end up being 1300 files? or will there be 300 files remaining in the source folder.
linux filesystems operating-systems
linux filesystems operating-systems
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
asked 3 hours ago
Shayan AhmadShayan Ahmad
192
192
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Shayan Ahmad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
2 Answers
2
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This depends on which tools you use: Let's check a few cases:
If you run something along the lines of mv /path/to/source/* /path/to/dest/ int a shell, you will end up with the original 1000 files being moved, the new 300 being untouched. This comes from the fact, that the shell will expand the * before starting the move operation, so when the move is in progress, the list is already fixed.
If you use Nautilus (and other GUI friends), you will end up the same way: It will run the move operation based on which files were selected - this doesn't change when new files show up.
If you use your own program using syscalls along the line of loop over glob and only one mv until glob stays empty, you will end up with all 1300 files in the new directory. This is because every new glob will pick up the new files, that have showed up in the meantime.
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of anopendir()is stable according to POSIX. A quick test with PHP'sopendir()confirms that (but I tested only ext4).
– Eugen Rieck
1 hour ago
Turns out the result set ofopendir()must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.
– Eugen Rieck
1 hour ago
add a comment |
When you tell the system to move all the files from a directory, it lists all the files and then starts moving them. If new files appear in the directory, they aren't added to the list of files to move, so they'll remain in the original location.
You can, of course, program a way of moving files different to mv which will periodically check for new files in the source directory.
answered 3 hours ago
chorobachoroba
13.3k13341
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
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active
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active
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votes
This depends on which tools you use: Let's check a few cases:
If you run something along the lines of mv /path/to/source/* /path/to/dest/ int a shell, you will end up with the original 1000 files being moved, the new 300 being untouched. This comes from the fact, that the shell will expand the * before starting the move operation, so when the move is in progress, the list is already fixed.
If you use Nautilus (and other GUI friends), you will end up the same way: It will run the move operation based on which files were selected - this doesn't change when new files show up.
If you use your own program using syscalls along the line of loop over glob and only one mv until glob stays empty, you will end up with all 1300 files in the new directory. This is because every new glob will pick up the new files, that have showed up in the meantime.
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of anopendir()is stable according to POSIX. A quick test with PHP'sopendir()confirms that (but I tested only ext4).
– Eugen Rieck
1 hour ago
Turns out the result set ofopendir()must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.
– Eugen Rieck
1 hour ago
add a comment |
This depends on which tools you use: Let's check a few cases:
If you run something along the lines of mv /path/to/source/* /path/to/dest/ int a shell, you will end up with the original 1000 files being moved, the new 300 being untouched. This comes from the fact, that the shell will expand the * before starting the move operation, so when the move is in progress, the list is already fixed.
If you use Nautilus (and other GUI friends), you will end up the same way: It will run the move operation based on which files were selected - this doesn't change when new files show up.
If you use your own program using syscalls along the line of loop over glob and only one mv until glob stays empty, you will end up with all 1300 files in the new directory. This is because every new glob will pick up the new files, that have showed up in the meantime.
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of anopendir()is stable according to POSIX. A quick test with PHP'sopendir()confirms that (but I tested only ext4).
– Eugen Rieck
1 hour ago
Turns out the result set ofopendir()must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.
– Eugen Rieck
1 hour ago
add a comment |
This depends on which tools you use: Let's check a few cases:
If you run something along the lines of mv /path/to/source/* /path/to/dest/ int a shell, you will end up with the original 1000 files being moved, the new 300 being untouched. This comes from the fact, that the shell will expand the * before starting the move operation, so when the move is in progress, the list is already fixed.
If you use Nautilus (and other GUI friends), you will end up the same way: It will run the move operation based on which files were selected - this doesn't change when new files show up.
If you use your own program using syscalls along the line of loop over glob and only one mv until glob stays empty, you will end up with all 1300 files in the new directory. This is because every new glob will pick up the new files, that have showed up in the meantime.
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
This depends on which tools you use: Let's check a few cases:
If you run something along the lines of mv /path/to/source/* /path/to/dest/ int a shell, you will end up with the original 1000 files being moved, the new 300 being untouched. This comes from the fact, that the shell will expand the * before starting the move operation, so when the move is in progress, the list is already fixed.
If you use Nautilus (and other GUI friends), you will end up the same way: It will run the move operation based on which files were selected - this doesn't change when new files show up.
If you use your own program using syscalls along the line of loop over glob and only one mv until glob stays empty, you will end up with all 1300 files in the new directory. This is because every new glob will pick up the new files, that have showed up in the meantime.
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
answered 3 hours ago
Eugen RieckEugen Rieck
10.4k22229
10.4k22229
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of anopendir()is stable according to POSIX. A quick test with PHP'sopendir()confirms that (but I tested only ext4).
– Eugen Rieck
1 hour ago
Turns out the result set ofopendir()must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.
– Eugen Rieck
1 hour ago
add a comment |
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of anopendir()is stable according to POSIX. A quick test with PHP'sopendir()confirms that (but I tested only ext4).
– Eugen Rieck
1 hour ago
Turns out the result set ofopendir()must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.
– Eugen Rieck
1 hour ago
3
3
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
What happens if you opendir() the source, then loop over readdir() or getdents()?
– grawity
3 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
If you loop only once, then it won't change.
– Eugen Rieck
2 hours ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
Is that true for all filesystems, and regardless of the amount of files? I assumed the kernel generally returns live results through readdir(), and doesn't pre-cache them or anything.
– grawity
1 hour ago
The result-set of an
opendir() is stable according to POSIX. A quick test with PHP's opendir() confirms that (but I tested only ext4).– Eugen Rieck
1 hour ago
The result-set of an
opendir() is stable according to POSIX. A quick test with PHP's opendir() confirms that (but I tested only ext4).– Eugen Rieck
1 hour ago
Turns out the result set of
opendir() must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.– Eugen Rieck
1 hour ago
Turns out the result set of
opendir() must be cached, as there is a limit on the number of returned values. This can't be true on a dynamic directory handle.– Eugen Rieck
1 hour ago
add a comment |
When you tell the system to move all the files from a directory, it lists all the files and then starts moving them. If new files appear in the directory, they aren't added to the list of files to move, so they'll remain in the original location.
You can, of course, program a way of moving files different to mv which will periodically check for new files in the source directory.
answered 3 hours ago
chorobachoroba
13.3k13341
add a comment |
When you tell the system to move all the files from a directory, it lists all the files and then starts moving them. If new files appear in the directory, they aren't added to the list of files to move, so they'll remain in the original location.
You can, of course, program a way of moving files different to mv which will periodically check for new files in the source directory.
answered 3 hours ago
chorobachoroba
13.3k13341
add a comment |
When you tell the system to move all the files from a directory, it lists all the files and then starts moving them. If new files appear in the directory, they aren't added to the list of files to move, so they'll remain in the original location.
You can, of course, program a way of moving files different to mv which will periodically check for new files in the source directory.
answered 3 hours ago
chorobachoroba
13.3k13341
When you tell the system to move all the files from a directory, it lists all the files and then starts moving them. If new files appear in the directory, they aren't added to the list of files to move, so they'll remain in the original location.
You can, of course, program a way of moving files different to mv which will periodically check for new files in the source directory.
answered 3 hours ago
chorobachoroba
13.3k13341
answered 3 hours ago
chorobachoroba
13.3k13341
answered 3 hours ago
chorobachoroba
13.3k13341
answered 3 hours ago
chorobachoroba
13.3k13341
13.3k13341
add a comment |
add a comment |
Shayan Ahmad is a new contributor. Be nice, and check out our Code of Conduct.
Shayan Ahmad is a new contributor. Be nice, and check out our Code of Conduct.
Shayan Ahmad is a new contributor. Be nice, and check out our Code of Conduct.
Shayan Ahmad is a new contributor. Be nice, and check out our Code of Conduct.
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