List files not owned by root at the / directory
The actual homework question is
- List all files/directories NOT owned by root and not created in July.
I can't find a way to use
ls
and
grep
to output a file ~/NotOwnedByRoot.txt
find / ! -user root -d -maxdepth 1 -exec ls > ~/NotOwnedByRoot.txt {} +
I also tried
find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt
I get the error
find: warning: you have specified the -maxdepth option after a
non-option argument !, but options are not positional (-maxdepth
affects tests specified before it as well as those specified after
it). Please specify options before other arguments.
linux grep find ls
edited Mar 6 at 18:20
roaima
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
|
show 2 more comments
The actual homework question is
- List all files/directories NOT owned by root and not created in July.
I can't find a way to use
ls
and
grep
to output a file ~/NotOwnedByRoot.txt
find / ! -user root -d -maxdepth 1 -exec ls > ~/NotOwnedByRoot.txt {} +
I also tried
find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt
I get the error
find: warning: you have specified the -maxdepth option after a
non-option argument !, but options are not positional (-maxdepth
affects tests specified before it as well as those specified after
it). Please specify options before other arguments.
linux grep find ls
edited Mar 6 at 18:20
roaima
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39
|
show 2 more comments
The actual homework question is
- List all files/directories NOT owned by root and not created in July.
I can't find a way to use
ls
and
grep
to output a file ~/NotOwnedByRoot.txt
find / ! -user root -d -maxdepth 1 -exec ls > ~/NotOwnedByRoot.txt {} +
I also tried
find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt
I get the error
find: warning: you have specified the -maxdepth option after a
non-option argument !, but options are not positional (-maxdepth
affects tests specified before it as well as those specified after
it). Please specify options before other arguments.
linux grep find ls
edited Mar 6 at 18:20
roaima
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
The actual homework question is
- List all files/directories NOT owned by root and not created in July.
I can't find a way to use
ls
and
grep
to output a file ~/NotOwnedByRoot.txt
find / ! -user root -d -maxdepth 1 -exec ls > ~/NotOwnedByRoot.txt {} +
I also tried
find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt
I get the error
find: warning: you have specified the -maxdepth option after a
non-option argument !, but options are not positional (-maxdepth
affects tests specified before it as well as those specified after
it). Please specify options before other arguments.
linux grep find ls
linux grep find ls
edited Mar 6 at 18:20
roaima
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
edited Mar 6 at 18:20
roaima
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
edited Mar 6 at 18:20
roaima
45.9k758124
edited Mar 6 at 18:20
roaima
45.9k758124
edited Mar 6 at 18:20
roaima
45.9k758124
45.9k758124
asked Mar 6 at 16:47
software is funsoftware is fun
952
asked Mar 6 at 16:47
software is funsoftware is fun
952
asked Mar 6 at 16:47
software is funsoftware is fun
952
952
does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39
|
show 2 more comments
does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39
does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39
|
show 2 more comments
1 Answer
1
active
oldest
votes
you can use ls and grep together its very easy and with the -v in grep option you can search for words or phrases that are NOT there, so it will output everything which is not in conjunction with your search.
While in the directory you want to do this in try: ls -l | grep -v root || July
The first part ls -l lists all the files in a long listing order
The | symbol is called a pipe and it takes the input of the previous command and uses it as an input in the next command, in this case ls -l would be used as an input into 'grep'.
The second part grep -v root uses grep with the -v option which, with the search term root, the -v option is used to look for all contents that do not have what you searched for, so it will look for everything that does not have 'root'.
Finally the last part || July , the || basically means 'and' in grep so your specifiying two or more search terms, the 'July' is the second search term.***
PS: I DO NOT THINK THE QUESTION IS ASKING YOU TO MAKE A FILE CALLED 'NOTOWNEDBYROOT' INSTEAD ITS ASKING YOU TO SEARCH A DIRETCORY FOR ALL FILES/SUB DIRECTORYS THAT ARE NOT OWNED BY ROOT OR MADE IN JULY
answered Mar 6 at 18:06
QasimQasim
19
Will straight-up fail to work as intended; ifgrep -v rootthrows a non-zero exit code, it will attempt to run the commandJulywhich is very likely not to be an internal or a binary in thePATH.
– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of|then I will change my -1 to +1
– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
AndJulyis not a command. Things that are not the same, partial list:||,|. Either way, it's wrong here.
– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
|
show 1 more comment
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1 Answer
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1 Answer
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votes
you can use ls and grep together its very easy and with the -v in grep option you can search for words or phrases that are NOT there, so it will output everything which is not in conjunction with your search.
While in the directory you want to do this in try: ls -l | grep -v root || July
The first part ls -l lists all the files in a long listing order
The | symbol is called a pipe and it takes the input of the previous command and uses it as an input in the next command, in this case ls -l would be used as an input into 'grep'.
The second part grep -v root uses grep with the -v option which, with the search term root, the -v option is used to look for all contents that do not have what you searched for, so it will look for everything that does not have 'root'.
Finally the last part || July , the || basically means 'and' in grep so your specifiying two or more search terms, the 'July' is the second search term.***
PS: I DO NOT THINK THE QUESTION IS ASKING YOU TO MAKE A FILE CALLED 'NOTOWNEDBYROOT' INSTEAD ITS ASKING YOU TO SEARCH A DIRETCORY FOR ALL FILES/SUB DIRECTORYS THAT ARE NOT OWNED BY ROOT OR MADE IN JULY
answered Mar 6 at 18:06
QasimQasim
19
Will straight-up fail to work as intended; ifgrep -v rootthrows a non-zero exit code, it will attempt to run the commandJulywhich is very likely not to be an internal or a binary in thePATH.
– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of|then I will change my -1 to +1
– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
AndJulyis not a command. Things that are not the same, partial list:||,|. Either way, it's wrong here.
– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
|
show 1 more comment
you can use ls and grep together its very easy and with the -v in grep option you can search for words or phrases that are NOT there, so it will output everything which is not in conjunction with your search.
While in the directory you want to do this in try: ls -l | grep -v root || July
The first part ls -l lists all the files in a long listing order
The | symbol is called a pipe and it takes the input of the previous command and uses it as an input in the next command, in this case ls -l would be used as an input into 'grep'.
The second part grep -v root uses grep with the -v option which, with the search term root, the -v option is used to look for all contents that do not have what you searched for, so it will look for everything that does not have 'root'.
Finally the last part || July , the || basically means 'and' in grep so your specifiying two or more search terms, the 'July' is the second search term.***
PS: I DO NOT THINK THE QUESTION IS ASKING YOU TO MAKE A FILE CALLED 'NOTOWNEDBYROOT' INSTEAD ITS ASKING YOU TO SEARCH A DIRETCORY FOR ALL FILES/SUB DIRECTORYS THAT ARE NOT OWNED BY ROOT OR MADE IN JULY
answered Mar 6 at 18:06
QasimQasim
19
Will straight-up fail to work as intended; ifgrep -v rootthrows a non-zero exit code, it will attempt to run the commandJulywhich is very likely not to be an internal or a binary in thePATH.
– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of|then I will change my -1 to +1
– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
AndJulyis not a command. Things that are not the same, partial list:||,|. Either way, it's wrong here.
– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
|
show 1 more comment
you can use ls and grep together its very easy and with the -v in grep option you can search for words or phrases that are NOT there, so it will output everything which is not in conjunction with your search.
While in the directory you want to do this in try: ls -l | grep -v root || July
The first part ls -l lists all the files in a long listing order
The | symbol is called a pipe and it takes the input of the previous command and uses it as an input in the next command, in this case ls -l would be used as an input into 'grep'.
The second part grep -v root uses grep with the -v option which, with the search term root, the -v option is used to look for all contents that do not have what you searched for, so it will look for everything that does not have 'root'.
Finally the last part || July , the || basically means 'and' in grep so your specifiying two or more search terms, the 'July' is the second search term.***
PS: I DO NOT THINK THE QUESTION IS ASKING YOU TO MAKE A FILE CALLED 'NOTOWNEDBYROOT' INSTEAD ITS ASKING YOU TO SEARCH A DIRETCORY FOR ALL FILES/SUB DIRECTORYS THAT ARE NOT OWNED BY ROOT OR MADE IN JULY
answered Mar 6 at 18:06
QasimQasim
19
you can use ls and grep together its very easy and with the -v in grep option you can search for words or phrases that are NOT there, so it will output everything which is not in conjunction with your search.
While in the directory you want to do this in try: ls -l | grep -v root || July
The first part ls -l lists all the files in a long listing order
The | symbol is called a pipe and it takes the input of the previous command and uses it as an input in the next command, in this case ls -l would be used as an input into 'grep'.
The second part grep -v root uses grep with the -v option which, with the search term root, the -v option is used to look for all contents that do not have what you searched for, so it will look for everything that does not have 'root'.
Finally the last part || July , the || basically means 'and' in grep so your specifiying two or more search terms, the 'July' is the second search term.***
PS: I DO NOT THINK THE QUESTION IS ASKING YOU TO MAKE A FILE CALLED 'NOTOWNEDBYROOT' INSTEAD ITS ASKING YOU TO SEARCH A DIRETCORY FOR ALL FILES/SUB DIRECTORYS THAT ARE NOT OWNED BY ROOT OR MADE IN JULY
answered Mar 6 at 18:06
QasimQasim
19
edited Mar 6 at 18:12
answered Mar 6 at 18:06
QasimQasim
19
answered Mar 6 at 18:06
QasimQasim
19
answered Mar 6 at 18:06
QasimQasim
19
19
Will straight-up fail to work as intended; ifgrep -v rootthrows a non-zero exit code, it will attempt to run the commandJulywhich is very likely not to be an internal or a binary in thePATH.
– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of|then I will change my -1 to +1
– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
AndJulyis not a command. Things that are not the same, partial list:||,|. Either way, it's wrong here.
– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
|
show 1 more comment
Will straight-up fail to work as intended; ifgrep -v rootthrows a non-zero exit code, it will attempt to run the commandJulywhich is very likely not to be an internal or a binary in thePATH.
– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of|then I will change my -1 to +1
– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
AndJulyis not a command. Things that are not the same, partial list:||,|. Either way, it's wrong here.
– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
Will straight-up fail to work as intended; if
grep -v root throws a non-zero exit code, it will attempt to run the command July which is very likely not to be an internal or a binary in the PATH.– DopeGhoti
Mar 6 at 18:21
Will straight-up fail to work as intended; if
grep -v root throws a non-zero exit code, it will attempt to run the command July which is very likely not to be an internal or a binary in the PATH.– DopeGhoti
Mar 6 at 18:21
If you fix your code, and explanation of
| then I will change my -1 to +1– ctrl-alt-delor
Mar 7 at 9:15
If you fix your code, and explanation of
| then I will change my -1 to +1– ctrl-alt-delor
Mar 7 at 9:15
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
but thats what a pipe is, it takes the output of a command as an input of a next command..........
– Qasim
Mar 7 at 11:07
And
July is not a command. Things that are not the same, partial list: ||, |. Either way, it's wrong here.– DopeGhoti
Mar 8 at 16:18
And
July is not a command. Things that are not the same, partial list: ||, |. Either way, it's wrong here.– DopeGhoti
Mar 8 at 16:18
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
okay, what does | | and | mean then?
– Qasim
Mar 8 at 20:39
|
show 1 more comment
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does "-d" want to be "-type d"? and by "list users not owned by root" did you mean "list directories not owned by root"? (guessing at the typo-corrections)
– Jeff Schaller♦
Mar 6 at 16:51
$ find / ! -user root -type d -maxdepth 1 > ~/NotOwnedByRoot.txt find: warning: you have specified the -maxdepth option after a non-option argument !, but options are not positional (-maxdepth affects tests specified before it as well as those specified after it). Please specify options before other arguments.
– software is fun
Mar 6 at 17:05
Your title does not make sense, and does not match the 2nd line of you question. Read up on what a user, file, directory and a process is.
– ctrl-alt-delor
Mar 6 at 17:36
The error is a warning, but do what it says anyway. It will help you understand the command.
– ctrl-alt-delor
Mar 6 at 17:38
Which July? any July, or just this past one?
– Jeff Schaller♦
Mar 6 at 17:39