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Expansion not working properly

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# 8  
Old 09-29-2015
Quote:
Originally Posted by Corona688
grep did not match any "UNF\1122" in the ps output because none of the ps output contained "UNF\1122".

I am not sure what \1122 is supposed to be, but it's some unicode character you may not have noticed because it's probably unprintable in your terminal.

Make sure that it's not actually in your user name:

Code:
awk -v U="$UID" -F":" '$3 == U { print $1 }' /etc/passwd | hexdump -C

This isn't Cygwin, is it?
With this it matched the "U" "N" "F" "\" "1" "2" "2" "2". As individual characters. I have my color on in grep.

Code:
$ ps -ef | grep "[$USER]"

These are NOT "\1122" trailing characters. My username is "UNF\1122". Don't ask me why. That is what the administrator felt like doing.

That awk command is not giving any output.

I am using Ubuntu.

Quote:
Originally Posted by Aia
You said you were in an Ubuntu box. The env USER should be set to just the name of the account you're logged in. Somewhat, it has been set to that "UNF\1122", unless that that's the name of the account.

Check what's the user name:
Code:
grep UNF /etc/passwd | od -bc

Log out and log in again and check once more for env
"UNF\1122" IS my username.

The way the admin setup the accounts is weird. My username is not in /etc/passwd file.
# 9  
Old 09-29-2015
Quote:
Originally Posted by cokedude
"UNF\1122" IS my username.

The way the admin setup the accounts is weird. My username is not in /etc/passwd file.
That's a bit short-sighted from the part of who decided to have that scheme of username. The `\' is special to the shell. It is used as the escape character. That's why the original command would not work:
Quote:
Code:
ipcs -m | grep $USER | awk '{printf "%s ",$2}'

If USER="UNF\\\\1122" or USER='UNF\\1122', then that command might work

Or maybe

Code:
ipcs -m | awk -v user="${USER%\\\\*}" '$0 ~ user {printf "%s ", $2}'

Last edited by Aia; 09-29-2015 at 09:53 PM..
# 10  
Old 09-30-2015
What be the output of
Code:
 /bin/ps -ouser

?
# 11  
Old 09-30-2015
Quote:
Originally Posted by cokedude
With this it matched the "U" "N" "F" "\" "1" "2" "2" "2". As individual characters. I have my color on in grep.
Really?
Quote:
The way the admin setup the accounts is weird. My username is not in /etc/passwd file.
That's the file awk was looking at. It must be there.

I'm surprised he was able to put that in a username, really. From man useradd:

Code:
       Usernames must start with a lower case letter or an underscore,
       followed by lower case letters, digits, underscores, or dashes. They
       can end with a dollar sign. In regular expression terms:
       [a-z_][a-z0-9_-]*[$]?

# 12  
Old 09-30-2015
Quote:
Originally Posted by Corona688
Really?

That's the file awk was looking at. It must be there.

I'm surprised he was able to put that in a username, really. From man useradd:

Code:
       Usernames must start with a lower case letter or an underscore,
       followed by lower case letters, digits, underscores, or dashes. They
       can end with a dollar sign. In regular expression terms:
       [a-z_][a-z0-9_-]*[$]?

This is probably a user created from a LDAP, therefore it will not be a local user in /etc/passwd.
# 13  
Old 10-01-2015
Quote:
Originally Posted by Aia
This is probably a user created from a LDAP, therefore it will not be a local user in /etc/passwd.
Except he told me the command I gave him, which worked, printed a user from /etc/password Smilie
# 14  
Old 10-01-2015
Quote:
Originally Posted by Corona688
Except he told me the command I gave him, which worked, printed a user from /etc/password Smilie
Are you talking about this?

Code:
awk -v U="$UID" -F":" '$3 == U { print $1 }' /etc/passwd | hexdump -C

This is what I said? Sorry if I was confusing.

Quote:
That awk command is not giving any output.
Quote:
Originally Posted by Aia
That's a bit short-sighted from the part of who decided to have that scheme of username. The `\' is special to the shell. It is used as the escape character. That's why the original command would not work:

If USER="UNF\\\\1122" or USER='UNF\\1122', then that command might work

Or maybe

Code:
ipcs -m | awk -v user="${USER%\\\\*}" '$0 ~ user {printf "%s ", $2}'

These don't seem to be working Smilie.
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