Why are the permissions on /usr/bin/x86_64-linux-gnu-as set to 750?












0















Compiling a simple program in Ubuntu 16.04 with gcc-5.4.0:



$ cat tmp.c
#include <stdio.h>
int main()
{

printf("Hello World");
}


Yields the following error when trying to compile as a non-privileged user:



$ gcc tmp.c
gcc: error trying to exec 'as': execvp: Permission denied


If I look at the permissions of the assembler, as:



$ ls -lt /usr/bin/as

lrwxrwxrwx 1 root root 19 Aug 30 09:39 /usr/bin/as -> x86_64-linux-gnu-as

$ ls -lt /usr/bin/x86_64-linux-gnu-as

-rwxr-x--- 1 root root 369480 Aug 30 09:39 /usr/bin/x86_64-linux-gnu-as


This is very strange. I can compile this program as root without the error.



QUESTION:



Why is the assembler have 750 permissions? How would it have gotten into this state. I can't imagine that Ubuntu comes like this by default.










share|improve this question


















  • 2





    It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

    – steeldriver
    Feb 18 at 16:04
















0















Compiling a simple program in Ubuntu 16.04 with gcc-5.4.0:



$ cat tmp.c
#include <stdio.h>
int main()
{

printf("Hello World");
}


Yields the following error when trying to compile as a non-privileged user:



$ gcc tmp.c
gcc: error trying to exec 'as': execvp: Permission denied


If I look at the permissions of the assembler, as:



$ ls -lt /usr/bin/as

lrwxrwxrwx 1 root root 19 Aug 30 09:39 /usr/bin/as -> x86_64-linux-gnu-as

$ ls -lt /usr/bin/x86_64-linux-gnu-as

-rwxr-x--- 1 root root 369480 Aug 30 09:39 /usr/bin/x86_64-linux-gnu-as


This is very strange. I can compile this program as root without the error.



QUESTION:



Why is the assembler have 750 permissions? How would it have gotten into this state. I can't imagine that Ubuntu comes like this by default.










share|improve this question


















  • 2





    It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

    – steeldriver
    Feb 18 at 16:04














0












0








0








Compiling a simple program in Ubuntu 16.04 with gcc-5.4.0:



$ cat tmp.c
#include <stdio.h>
int main()
{

printf("Hello World");
}


Yields the following error when trying to compile as a non-privileged user:



$ gcc tmp.c
gcc: error trying to exec 'as': execvp: Permission denied


If I look at the permissions of the assembler, as:



$ ls -lt /usr/bin/as

lrwxrwxrwx 1 root root 19 Aug 30 09:39 /usr/bin/as -> x86_64-linux-gnu-as

$ ls -lt /usr/bin/x86_64-linux-gnu-as

-rwxr-x--- 1 root root 369480 Aug 30 09:39 /usr/bin/x86_64-linux-gnu-as


This is very strange. I can compile this program as root without the error.



QUESTION:



Why is the assembler have 750 permissions? How would it have gotten into this state. I can't imagine that Ubuntu comes like this by default.










share|improve this question














Compiling a simple program in Ubuntu 16.04 with gcc-5.4.0:



$ cat tmp.c
#include <stdio.h>
int main()
{

printf("Hello World");
}


Yields the following error when trying to compile as a non-privileged user:



$ gcc tmp.c
gcc: error trying to exec 'as': execvp: Permission denied


If I look at the permissions of the assembler, as:



$ ls -lt /usr/bin/as

lrwxrwxrwx 1 root root 19 Aug 30 09:39 /usr/bin/as -> x86_64-linux-gnu-as

$ ls -lt /usr/bin/x86_64-linux-gnu-as

-rwxr-x--- 1 root root 369480 Aug 30 09:39 /usr/bin/x86_64-linux-gnu-as


This is very strange. I can compile this program as root without the error.



QUESTION:



Why is the assembler have 750 permissions? How would it have gotten into this state. I can't imagine that Ubuntu comes like this by default.







permissions compiling assembler






share|improve this question













share|improve this question











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asked Feb 18 at 15:57









irritable_phd_syndromirritable_phd_syndrom

1011




1011








  • 2





    It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

    – steeldriver
    Feb 18 at 16:04














  • 2





    It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

    – steeldriver
    Feb 18 at 16:04








2




2





It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

– steeldriver
Feb 18 at 16:04





It likely would have gotten into that state by careless use of the chmod command. Perhaps time to reinstall the binutils package?

– steeldriver
Feb 18 at 16:04










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