Why is my GID environment variable empty?
0
I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?
id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>
The output of id:
uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)
The output of groups:
user adm cdrom sudo dip plugdev lpadmin sambashare docker
Ubuntu version:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
environment-variables groups uid
edited Mar 11 at 6:42
Prvt_Yadv
293313
asked Mar 11 at 6:14
CoreyCorey
10716
add a comment |
0
I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?
id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>
The output of id:
uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)
The output of groups:
user adm cdrom sudo dip plugdev lpadmin sambashare docker
Ubuntu version:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
environment-variables groups uid
edited Mar 11 at 6:42
Prvt_Yadv
293313
asked Mar 11 at 6:14
CoreyCorey
10716
add a comment |
0
0
0
I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?
id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>
The output of id:
uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)
The output of groups:
user adm cdrom sudo dip plugdev lpadmin sambashare docker
Ubuntu version:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
environment-variables groups uid
edited Mar 11 at 6:42
Prvt_Yadv
293313
asked Mar 11 at 6:14
CoreyCorey
10716
I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?
id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>
The output of id:
uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)
The output of groups:
user adm cdrom sudo dip plugdev lpadmin sambashare docker
Ubuntu version:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
environment-variables groups uid
environment-variables groups uid
edited Mar 11 at 6:42
Prvt_Yadv
293313
asked Mar 11 at 6:14
CoreyCorey
10716
edited Mar 11 at 6:42
Prvt_Yadv
293313
asked Mar 11 at 6:14
CoreyCorey
10716
edited Mar 11 at 6:42
Prvt_Yadv
293313
edited Mar 11 at 6:42
Prvt_Yadv
293313
edited Mar 11 at 6:42
Prvt_Yadv
293313
293313
asked Mar 11 at 6:14
CoreyCorey
10716
asked Mar 11 at 6:14
CoreyCorey
10716
asked Mar 11 at 6:14
CoreyCorey
10716
10716
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
2
I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.
Zsh, on the other hand, does set GID:
$ bash -c 'echo $GID'
$ zsh -c 'echo $GID'
1000
answered Mar 11 at 6:32
OlorinOlorin
2,656924
What's the differences between usingbash -c 'echo $GID'andecho $GIDin terminal ?
– Corey
Mar 11 at 6:42
1
@Coreyecho $GIDin my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I usebash -c ...to run the command specifically in bash.
– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to getGIDexceptid -g?
– Corey
Mar 11 at 6:48
2
@Corey use commandcat /etc/group | grep ^your_group_name | cut -d: -f3
– Prvt_Yadv
Mar 11 at 6:54
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
|
show 2 more comments
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.
Zsh, on the other hand, does set GID:
$ bash -c 'echo $GID'
$ zsh -c 'echo $GID'
1000
answered Mar 11 at 6:32
OlorinOlorin
2,656924
What's the differences between usingbash -c 'echo $GID'andecho $GIDin terminal ?
– Corey
Mar 11 at 6:42
1
@Coreyecho $GIDin my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I usebash -c ...to run the command specifically in bash.
– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to getGIDexceptid -g?
– Corey
Mar 11 at 6:48
2
@Corey use commandcat /etc/group | grep ^your_group_name | cut -d: -f3
– Prvt_Yadv
Mar 11 at 6:54
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
|
show 2 more comments
2
I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.
Zsh, on the other hand, does set GID:
$ bash -c 'echo $GID'
$ zsh -c 'echo $GID'
1000
answered Mar 11 at 6:32
OlorinOlorin
2,656924
What's the differences between usingbash -c 'echo $GID'andecho $GIDin terminal ?
– Corey
Mar 11 at 6:42
1
@Coreyecho $GIDin my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I usebash -c ...to run the command specifically in bash.
– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to getGIDexceptid -g?
– Corey
Mar 11 at 6:48
2
@Corey use commandcat /etc/group | grep ^your_group_name | cut -d: -f3
– Prvt_Yadv
Mar 11 at 6:54
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
|
show 2 more comments
2
2
2
I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.
Zsh, on the other hand, does set GID:
$ bash -c 'echo $GID'
$ zsh -c 'echo $GID'
1000
answered Mar 11 at 6:32
OlorinOlorin
2,656924
I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.
Zsh, on the other hand, does set GID:
$ bash -c 'echo $GID'
$ zsh -c 'echo $GID'
1000
answered Mar 11 at 6:32
OlorinOlorin
2,656924
answered Mar 11 at 6:32
OlorinOlorin
2,656924
answered Mar 11 at 6:32
OlorinOlorin
2,656924
answered Mar 11 at 6:32
OlorinOlorin
2,656924
2,656924
What's the differences between usingbash -c 'echo $GID'andecho $GIDin terminal ?
– Corey
Mar 11 at 6:42
1
@Coreyecho $GIDin my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I usebash -c ...to run the command specifically in bash.
– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to getGIDexceptid -g?
– Corey
Mar 11 at 6:48
2
@Corey use commandcat /etc/group | grep ^your_group_name | cut -d: -f3
– Prvt_Yadv
Mar 11 at 6:54
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
|
show 2 more comments
What's the differences between usingbash -c 'echo $GID'andecho $GIDin terminal ?
– Corey
Mar 11 at 6:42
1
@Coreyecho $GIDin my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I usebash -c ...to run the command specifically in bash.
– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to getGIDexceptid -g?
– Corey
Mar 11 at 6:48
2
@Corey use commandcat /etc/group | grep ^your_group_name | cut -d: -f3
– Prvt_Yadv
Mar 11 at 6:54
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
What's the differences between using
bash -c 'echo $GID' and echo $GID in terminal ?– Corey
Mar 11 at 6:42
What's the differences between using
bash -c 'echo $GID' and echo $GID in terminal ?– Corey
Mar 11 at 6:42
1
1
@Corey
echo $GID in my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I use bash -c ... to run the command specifically in bash.– Olorin
Mar 11 at 6:46
@Corey
echo $GID in my terminal would run it in zsh, since I use zsh as my shell. In your terminal, it might be run in bash. I use bash -c ... to run the command specifically in bash.– Olorin
Mar 11 at 6:46
Got it, thanks. Is there any way in bash to get
GID except id -g ?– Corey
Mar 11 at 6:48
Got it, thanks. Is there any way in bash to get
GID except id -g ?– Corey
Mar 11 at 6:48
2
2
@Corey use command
cat /etc/group | grep ^your_group_name | cut -d: -f3– Prvt_Yadv
Mar 11 at 6:54
@Corey use command
cat /etc/group | grep ^your_group_name | cut -d: -f3– Prvt_Yadv
Mar 11 at 6:54
1
1
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
@Corey if you're using bash, possibly. But I don't know if it's guaranteed to hold your GID as the first element of the array.
– Olorin
Mar 11 at 7:07
|
show 2 more comments
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