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Why can’t I create a file with a name prefixed by “passwd.” in “/etc”?

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2

I have a PC with Ubuntu 16.04 installed. Recently I want to install some packages but have trouble installing them. After some digging, I found that the failure seems to be related to the linux user account system. The problem is that any file with a name prefixed by passwd. cannot be created in /etc path.

# ls /etc/passwd.*

ls: cannot access '/etc/passwd.*': No such file or directory



# touch /etc/passwd.test-test-test

touch: cannot touch '/etc/passwd.test-test-test': Permission denied



# ls /etc/passwe.*

ls: cannot access '/etc/passwe.*': No such file or directory



# touch /etc/passwe.test-test-test

#

I can create that file in other paths, such as / or /usr, but not in /etc, and I can create file with other file names in /etc, but not with file names prefixed by passwd.. I can’t reproduce this problem with other PCs.

What could cause this problem?

ubuntu permissions

share|improve this question

edited 2 mins ago

EFanZh

asked 55 mins ago

EFanZhEFanZh

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2

I have a PC with Ubuntu 16.04 installed. Recently I want to install some packages but have trouble installing them. After some digging, I found that the failure seems to be related to the linux user account system. The problem is that any file with a name prefixed by passwd. cannot be created in /etc path.

# ls /etc/passwd.*

ls: cannot access '/etc/passwd.*': No such file or directory



# touch /etc/passwd.test-test-test

touch: cannot touch '/etc/passwd.test-test-test': Permission denied



# ls /etc/passwe.*

ls: cannot access '/etc/passwe.*': No such file or directory



# touch /etc/passwe.test-test-test

#

I can create that file in other paths, such as / or /usr, but not in /etc, and I can create file with other file names in /etc, but not with file names prefixed by passwd.. I can’t reproduce this problem with other PCs.

What could cause this problem?

ubuntu permissions

share|improve this question

edited 2 mins ago

EFanZh

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges

New contributor

EFanZh 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 | 

I have a PC with Ubuntu 16.04 installed. Recently I want to install some packages but have trouble installing them. After some digging, I found that the failure seems to be related to the linux user account system. The problem is that any file with a name prefixed by passwd. cannot be created in /etc path.

# ls /etc/passwd.*

ls: cannot access '/etc/passwd.*': No such file or directory



# touch /etc/passwd.test-test-test

touch: cannot touch '/etc/passwd.test-test-test': Permission denied



# ls /etc/passwe.*

ls: cannot access '/etc/passwe.*': No such file or directory



# touch /etc/passwe.test-test-test

#

I can create that file in other paths, such as / or /usr, but not in /etc, and I can create file with other file names in /etc, but not with file names prefixed by passwd.. I can’t reproduce this problem with other PCs.

What could cause this problem?

ubuntu permissions

share|improve this question

edited 2 mins ago

EFanZh

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges

New contributor

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

# ls /etc/passwd.*

ls: cannot access '/etc/passwd.*': No such file or directory



# touch /etc/passwd.test-test-test

touch: cannot touch '/etc/passwd.test-test-test': Permission denied



# ls /etc/passwe.*

ls: cannot access '/etc/passwe.*': No such file or directory



# touch /etc/passwe.test-test-test

#

share|improve this question

edited 2 mins ago

EFanZh

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges

New contributor

EFanZh 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

edited 2 mins ago

EFanZh

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges

New contributor

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

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges

New contributor

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

asked 55 mins ago

EFanZhEFanZh

11133 bronze badges