cp command not working
hi,
i created aaa file under gp foler under root of tutorialpoint
sh-4.4$ /bin/bash
bash-4.4$ [wd
bash: [wd: command not found
bash-4.4$ pwd
/home/cg/root
bash-4.4$ mkdir gp
bash-4.4$ pwd
/home/cg/root
bash-4.4$ cd gp
bash-4.4$ pwd
/home/cg/root/gp
bash-4.4$ vi aaa
bash-4.4$ ls -ltr
total 4
-rw-r--r-- 1 33142 33142 9 Nov 3 01:46 aaa
bash-4.4$ cp aaa /root
cp: cannot stat '/root/aaa': Permission denied
bash-4.4$
https://www.tutorialspoint.com/unix_terminal_online.php
when i give command cp to copy file to root getting permission denied.
i wonder why i get that and what i have to d to practice cp comand therre
i created aaa file under gp foler under root of tutorialpoint
sh-4.4$ /bin/bash
bash-4.4$ [wd
bash: [wd: command not found
bash-4.4$ pwd
/home/cg/root
bash-4.4$ mkdir gp
bash-4.4$ pwd
/home/cg/root
bash-4.4$ cd gp
bash-4.4$ pwd
/home/cg/root/gp
bash-4.4$ vi aaa
bash-4.4$ ls -ltr
total 4
-rw-r--r-- 1 33142 33142 9 Nov 3 01:46 aaa
bash-4.4$ cp aaa /root
cp: cannot stat '/root/aaa': Permission denied
bash-4.4$
https://www.tutorialspoint.com/unix_terminal_online.php
when i give command cp to copy file to root getting permission denied.
i wonder why i get that and what i have to d to practice cp comand therre
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Try to copy somwhere else, e.g. /tmp
ls -ld /tmp/aaa # check if a file aaa already exists in /tmp
cp aaa /tmp
you mean copy to or copy from tmp?
please advise
ASKER
sh-4.4$ cp aaa /tmp
cp: cannot stat 'aaa': No such file or directory
above giving error
cp: cannot stat 'aaa': No such file or directory
above giving error
ASKER
this is just free tool
https://www.tutorialspoint.com/unix_terminal_online.php
iam not looging in to root or anything like that.
just go to above url and practice some commands
https://www.tutorialspoint.com/unix_terminal_online.php
iam not looging in to root or anything like that.
just go to above url and practice some commands
ASKER
ls -ld /tmp/aaa # check if a file aaa already exists in /tmp
ls -ld
what is meaning of above command?
a) go into home directoy: cd
b) check to see where you are now: pwd
c) display what's in this directoy: ls
d) create a file name 'aaa': touch aaa
e) copy this file to /tmp: cp aaa /tmp
f) list contents of /tmp: ls /tmp
g) remove my file from /tmp: rm /tmp/aaa
b) check to see where you are now: pwd
c) display what's in this directoy: ls
d) create a file name 'aaa': touch aaa
e) copy this file to /tmp: cp aaa /tmp
f) list contents of /tmp: ls /tmp
g) remove my file from /tmp: rm /tmp/aaa
ASKER
a) go into home directoy: cd
b) check to see where you are now: pwd
c) display what's in this directoy: ls
d) create a file name 'aaa': touch aaa
e) copy this file to /tmp: cp aaa /tmp
f) list contents of /tmp: ls /tmp
g) remove my file from /tmp: rm /tmp/aaa
above worked as below
bash-4.4$ cd
bash-4.4$ pwd
/home/cg/root
bash-4.4$ ls
README.txt abc.txt gp1 gp2 gp3
bash-4.4$ touch aaa
bash-4.4$ cp aaa /tmp
bash-4.4$ ls /tmp
aaa
bash-4.4$ cd /tmp
bash-4.4$ pwd
/tmp
bash-4.4$ ls -ltr
total 0
-rw-r--r-- 1 44728 44728 0 Nov 5 23:07 aaa
bash-4.4$ vi aaa
bash-4.4$ vi aaa
bash-4.4$ pwd
/tmp
bash-4.4$ rm aaa
bash-4.4$ ls -ltr
total 0
bash-4.4$ cd
bash-4.4$ ls -ltr
total 20
-rw-r--r-- 1 44728 44728 978 Nov 5 22:35 README.txt
drwxr-xr-x 2 44728 44728 4096 Nov 5 22:41 gp2
-rw-r--r-- 1 44728 44728 9 Nov 5 22:41 abc.txt
drwxr-xr-x 3 44728 44728 4096 Nov 5 22:54 gp1
drwxr-xr-x 3 44728 44728 4096 Nov 5 23:02 gp3
-rw-r--r-- 1 44728 44728 0 Nov 5 23:07 aaa
when i do ls -ltr at root why tmp is not showing for me.
please advise
Please clarify root of the filesystem is (/)
This is the base of the UNIX/Linux filesystem, devices, structure.
The main administrative user root, uid 0 /root is the admin user's hone dir.
/tmp is one level from the root of the filesystem.
This is the base of the UNIX/Linux filesystem, devices, structure.
The main administrative user root, uid 0 /root is the admin user's hone dir.
/tmp is one level from the root of the filesystem.
you mean
ls -ltr /
or
ls -ltr /tmp
?
ls -ltr /
or
ls -ltr /tmp
?
ASKER
you mean/home/cg/root
ls -ltr /
or
ls -ltr /tmp
bash-4.4$ ls -ltr/tmp
ls: invalid option -- '/'
Try 'ls --help' for more information.
bash-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
bash-4.4$ pwd
/home/cg/root
bash-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Feb 10 2017 mnt
drwxr-xr-x 2 root root 4096 Feb 10 2017 media
lrwxrwxrwx 1 root root 9 Feb 10 2017 lib64 -> usr/lib64
lrwxrwxrwx 1 root root 7 Feb 10 2017 lib -> usr/lib
dr-xr-xr-x 2 root root 4096 Feb 10 2017 boot
lrwxrwxrwx 1 root root 7 Feb 10 2017 bin -> usr/bin
drwx------ 2 root root 4096 Jul 5 21:46 lost+found
drwxr-xr-x 1 root root 4096 Jul 5 21:47 usr
drwxr-xr-x 1 root root 4096 Sep 9 08:45 var
drwxr-xr-x 1 root root 4096 Sep 9 09:16 run
drwxr-xr-x 1 root root 4096 Sep 9 10:25 home
drwxr-xr-x 1 root root 4096 Sep 9 20:40 opt
dr-xr-x--- 1 root root 4096 Sep 9 20:41 root
drwxrwxrwt 1 root root 4096 Nov 14 19:25 tmp
drwxr-xr-x 1 root root 4096 Nov 23 16:34 etc
dr-xr-xr-x 3972 root root 0 Nov 23 16:34 proc
dr-xr-xr-x 13 root root 0 Nov 23 16:34 sys
drwxr-xr-x 5 root root 340 Nov 23 16:34 dev
bash-4.4$ pwd
/home/cg/root
bash-4.4$ ls -ltr
total 4
-rw-r--r-- 1 20997 20997 978 Nov 23 16:34 README.txt
what is meaning of below?
ls -ltr /
how above different from below?
ls -ltr
what is meaning of below command?
ls -ltr /tmp
the unix commands are broken up and space is important
command arguments_for_command files_directories
comman arguments_for_commandfiles
It would be as if someone walks up to you and starts talking to you in a language you do not understand.
command arguments_for_command files_directories
comman arguments_for_commandfiles
It would be as if someone walks up to you and starts talking to you in a language you do not understand.
ASKER
ls -ltr /
what is meaning of above command?
what is meaning of above command?
ls - list
- options
l - long form display
t - sort by time
r - reverse
Commonly tine sorted will gave newest at the top; using the r option changed the ordering to gave newest at the bottom.
Please remember, you can whenever you need look at a command's usage description and how/what ...... Using:
man ls
- options
l - long form display
t - sort by time
r - reverse
Commonly tine sorted will gave newest at the top; using the r option changed the ordering to gave newest at the bottom.
Please remember, you can whenever you need look at a command's usage description and how/what ...... Using:
man ls
ASKER
sh-4.4$ ls -ltr
total 0
sh-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Feb 10 2017 mnt
drwxr-xr-x 2 root root 4096 Feb 10 2017 media
lrwxrwxrwx 1 root root 9 Feb 10 2017 lib64 -> usr/lib64
lrwxrwxrwx 1 root root 7 Feb 10 2017 lib -> usr/lib
dr-xr-xr-x 2 root root 4096 Feb 10 2017 boot
lrwxrwxrwx 1 root root 7 Feb 10 2017 bin -> usr/bin
drwx------ 2 root root 4096 Jul 5 21:46 lost+found
drwxr-xr-x 1 root root 4096 Jul 5 21:47 usr
drwxr-xr-x 1 root root 4096 Sep 9 08:45 var
drwxr-xr-x 1 root root 4096 Sep 9 09:16 run
drwxr-xr-x 1 root root 4096 Sep 9 10:25 home
drwxr-xr-x 1 root root 4096 Sep 9 20:40 opt
dr-xr-x--- 1 root root 4096 Sep 9 20:41 root
drwxrwxrwt 1 root root 4096 Nov 14 19:25 tmp
drwxr-xr-x 1 root root 4096 Dec 19 16:38 etc
dr-xr-xr-x 1878 root root 0 Dec 19 16:38 proc
dr-xr-xr-x 13 root root 0 Dec 19 16:38 sys
drwxr-xr-x 5 root root 340 Dec 19 16:38 dev how below two are different?
ls -ltr
and
ls -ltr /
one lists the directory where you are the other lists the contents of the root (/) directory.
ls -lrt shows the contents of current directory (pwd shows which it is) and
ls -ltr / shows the contents of directory / (which is also called the "root" directory)
ls -ltr /tmp therefore displays the contents of directoy /tmp
ls -ltr / shows the contents of directory / (which is also called the "root" directory)
ls -ltr /tmp therefore displays the contents of directoy /tmp
ASKER
let me try
not sure why below link strangely redirecting to some home page instead of unix editor
http://www.tutorialspoint.com/unix_terminal_online.php
please advise
not sure why below link strangely redirecting to some home page instead of unix editor
http://www.tutorialspoint.com/unix_terminal_online.php
please advise
This is not the forum to address issues on how someone chooses to organize their site. in short, the site seems to redirect to a coding related sub-section of the person's site.....
ASKER
bash-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
above works fine
ASKER
ls -lrt shows the contents of current directory (pwd shows which it is) and
ls -ltr / shows the contents of directory / (which is also called the "root" directory)
ls -ltr /tmp therefore displays the contents of directoy /tmp
where is tmp directory located.? how to find that?
i thought it is under same folder so expected to see tmp when i typed
ls -ltr
but seems that is not the case here?
pls. try to learn a bit before coming back and answering new questions !!
/tmp ====> "tmp" under "/" directory !!
You seem to have no clue whatsoever -- sorry!
/tmp ====> "tmp" under "/" directory !!
You seem to have no clue whatsoever -- sorry!
ASKER
sh-4.4$ pwd
/home/cg/root
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
sh-4.4$ mv dir1 dir2/
mv: cannot stat 'dir1': No such file or directory
sh-4.4$ touch test
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test
sh-4.4$ touch test1
sh-4.4$ mv test test_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
sh-4.4$ cp test1 test1_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
sh-4.4$ mkdir gp
sh-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
/home/cg/root
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
sh-4.4$ mv dir1 dir2/
mv: cannot stat 'dir1': No such file or directory
sh-4.4$ touch test
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test
sh-4.4$ touch test1
sh-4.4$ mv test test_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
sh-4.4$ cp test1 test1_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
sh-4.4$ mkdir gp
sh-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
ASKER
sh-4.4$ pwd
/home/cg/root
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
sh-4.4$ mv dir1 dir2/
mv: cannot stat 'dir1': No such file or directory
sh-4.4$ touch test
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test
sh-4.4$ touch test1
sh-4.4$ mv test test_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
sh-4.4$ cp test1 test1_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
sh-4.4$ mkdir gp
sh-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
/home/cg/root
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
sh-4.4$ mv dir1 dir2/
mv: cannot stat 'dir1': No such file or directory
sh-4.4$ touch test
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test
sh-4.4$ touch test1
sh-4.4$ mv test test_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
sh-4.4$ cp test1 test1_n
sh-4.4$ ls -ltr
total 4
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
sh-4.4$ mkdir gp
sh-4.4$ ls -ltr /tmp
total 8
-rw-r--r-- 1 root root 72 Nov 14 19:23 lua_33W6hv
drwxr-xr-x 2 root root 4096 Nov 14 19:23 hsperfdata_root
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr
total 8
-rw-r--r-- 1 18799 18799 978 Feb 20 21:36 README.txt
-rw-r--r-- 1 18799 18799 0 Feb 20 21:42 test_n
-rw-r--r-- 1 18799 18799 0 Feb 20 21:43 test1
-rw-r--r-- 1 18799 18799 0 Feb 20 21:45 test1_n
drwxr-xr-x 2 18799 18799 4096 Feb 20 21:49 gp
sh-4.4$ ls -ltr /
total 52
drwxr-xr-x 2 root root 4096 Feb 10 2017 srv
lrwxrwxrwx 1 root root 8 Feb 10 2017 sbin -> usr/sbin
ASKER
now all clear
ls -ltr just shows all the files and directories in current directory
ls -ltr / shows all files and directories under root
ls -ltr /tmp shows all files and directories under tmp
ls -ltr just shows all the files and directories in current directory
ls -ltr / shows all files and directories under root
ls -ltr /tmp shows all files and directories under tmp
ASKER
This is NOT correct:
ls -ltr /tmp shows all files and directories under tmp
This would be correct:
ls -ltr tmp shows all files and directories under tmp
ls -ltr /tmp shows all files and directories under /tmp
ls -ltr /tmp shows all files and directories under tmp
This would be correct:
ls -ltr tmp shows all files and directories under tmp
ls -ltr /tmp shows all files and directories under /tmp
ASKER
still same permission denied coming
please advise