piping variables from stdin

ziox · 02-11-2005, 06:07 PM

Hello ...

How to assign variables to an output of a command ??..

specially something like that...

groups $USER | cut -f4,5,6 -d \ ; then i want to assign the output

with something like "read" or any so i can use those variables somewhere

else

sigsegv · 02-11-2005, 09:12 PM

OUTPUT=`groups $USER | cut -f4,5,6 -d \ ;`

Put the command in backticks

Hko · 02-12-2005, 03:38 AM

OUTPUT=$(groups $USER | cut -f4,5,6 -d \

Or in side $(..)
(bash only)

ziox · 02-12-2005, 06:43 PM

thanks
but what i wanted to do is take the output
of this command
groups $uzr | cut -f4,5,6 -d \ ;
then assign it with $x , $z
$1 = a group name i added in the script

usermod -G $1,$x,$z $uzr

The Script Is That...
____________________
#!bin/bash
#creating a group then assigning all users to it ....
groupadd $1
cd /home && echo "Making $1 Directory"
mkdir -m 3770 $1 ;
chgrp $1 $1
cd /home/$1
for uzr in `grep /home /etc/passwd | cut -f 1 -d :`
do
groups $uzr | cut -f4,5,6 -d \ ;
"(the problem here)..assign the output (the fields i catted)from the previous line
to $x,$o,$j and so forth....to prevent deleting users from old-groups when i creat
a new one...
usermod -G $1,$x,$o,$j $uzr
mkdir -p -m 3770 $uzr"_dir"
done
echo "Users Has Been Added To $1 Group"
_______________________________________________

keefaz · 02-13-2005, 07:39 AM

If I were you, I would avoid put all users from /etc/passwd in a new created group,
I woul make a limited users list instead...

For the loop I would do :

Code:

# I follow your wish, all users from passwd
userslist=`cat /etc/passwd  | cut -d: -f1`

for user in $userslist; do
    # all $user groups
    groups=`id $user -Gn`
    # all groups, coma separated
    groups=`echo $groups | sed -e 's/ /,/g'`
    # remove echo if you're satisfied
    echo "usermod -G $1,$groups $user"
    echo "mkdir -p -m 3770 $user_dir"
done

sigsegv · 02-13-2005, 08:29 AM

Quote:

Originally posted by keefaz
If I were you, I would avoid put all users from /etc/passwd in a new created group,
I woul make a limited users list instead...

Why? There are plenty of situations where this would be not only perfectly acceptable but the only possible means to an end.

ziox · 02-13-2005, 06:56 PM

Thanks
it work now fine
_______________________________

#!bin/bash
#creating a group then assigning all users to it ....
groupadd $1
cd /home && echo "Makeing $1 Directory"
mkdir -m 3770 $1 ;
chgrp $1 $1
cd /home/$1
uzrlist=`grep /home /etc/passwd | cut -f 1 -d :`
for uzr in $uzrlist
do
grps=`id $uzr -Gn | cut -f2,3,4,5 -d \ | sed -e 's/ /,/g'`
usermod -G $1,$grps $uzr
mkdir -p -m 3770 $uzr"_dir"
done
echo -e "$uzrlist \n\tHas Been Added To $1 Group"