What I'm trying to do is look at a list of users, and check to see if each exists. If they do, do some more stuff, if they don't, drop them into an error file.
So, my user list is:
foo - exists
bar - does not exist
blah - does not exist
K, so, here's the script:
Code:
#!/bin/bash
#This script will take two arguments, the group name, and the user list.
#It is recommended that the group be cleared before running this script since
#it will not remove people from the group.
if [ "$#" != "2" ]; then
echo -e "Usage of the groupadd script: $0 groupname userlist\n"
exit 1
else
group="$1"
userlist="$2"
echo "Adding users in $userlist to group $group"
read -p 'Enter username with directory write : ' admin
read -p 'Enter password for user : ' -s password
echo "test user: $admin, test pass: $password"
echo "group: $group, userlist: $userlist"
for user in `cat $userlist`; do
check=$(id -u $user | grep "no such user")
if [ $check != NULL ]; then
echo "blah"
#echo "User $user does not exist!"
fi
done
fi
I am obviously going to do more. The issue is, the output from id ends up outputting to the shell, rather than "blah". So, in the case of bar and blah, I get:
"id: bar: no such user
id: blah: no such user"
output to the shell. Where, I'd THINK that I'd get the output:
"blah
blah"
What I'm trying to do is look at a list of users, and check to see if each exists. If they do, do some more stuff, if they don't, drop them into an error file.
So, my user list is:
foo - exists
bar - does not exist
blah - does not exist
K, so, here's the script:
Code:
#!/bin/bash
#This script will take two arguments, the group name, and the user list.
#It is recommended that the group be cleared before running this script since
#it will not remove people from the group.
if [ "$#" != "2" ]; then
echo -e "Usage of the groupadd script: $0 groupname userlist\n"
exit 1
else
group="$1"
userlist="$2"
echo "Adding users in $userlist to group $group"
read -p 'Enter username with directory write : ' admin
read -p 'Enter password for user : ' -s password
echo "test user: $admin, test pass: $password"
echo "group: $group, userlist: $userlist"
for user in `cat $userlist`; do
check=$(id -u $user | grep "no such user")
You haven't redirected standard error, only standard output:
Code:
check=$(id -u $user 2>&1 | grep "no such user")
Quote:
Code:
if [ $check != NULL ]; then
The test will give a syntax error is there is nothing in $check; quote the variable:
Code:
if [ "$check" != NULL ]; then
However, that's not what you want; you are comparing the value of $check against the literal word NULL. What you want is:
Code:
if [ -n "$check" ]; then
Better would be:
Code:
if ! id -u "$user" >/dev/null 2>&1; then
echo blah
fi
Quote:
Code:
echo "blah"
#echo "User $user does not exist!"
fi
done
fi
I am obviously going to do more. The issue is, the output from id ends up outputting to the shell, rather than "blah". So, in the case of bar and blah, I get:
"id: bar: no such user
id: blah: no such user"
output to the shell. Where, I'd THINK that I'd get the output:
"blah
blah"
Anyone got any idea what's wrong?
You haven't redirected standard error, only standard output:
yeah, I figured out id was outputting the "no such user" to stderr just a moment ago.
Your suggestion worked brilliantly.
Thanks!
---------- Post updated at 08:40 PM ---------- Previous update was at 07:42 PM ----------
Incase anyone's interested, here's the "draft 1". It could be streamlined more, and I also plan to add the ability to delete members, and maybe compare the group against the input, and only add/remove those users that differ.
Feel free to use, though, I doubt it's worth much to people other than myself. =)
Code:
#!/bin/bash
#This script will take two arguments, the group name, and the user list.
#It is recommended that the group be cleared before running this script since
#it will not remove people from the group.
dirnode="/LDAPv3/ldap.example.com"
if [ "$#" != "2" ]; then
echo -e "Usage of the groupadd script: $0 groupname userlist\n"
exit 1
else
echo "The following users do not exist in the directory" > ./non_existant_users.txt
group="$1"
userlist="$2"
echo "Adding users in $userlist to group $group"
read -p 'Enter username with directory write : ' admin
read -p 'Enter password for user : ' -s password
#echo "test user: $admin, test pass: $password"
echo "group: $group, userlist: $userlist"
for user in `cat $userlist`; do
if ! id -u "$user" >/dev/null 2>&1; then
echo "User $user does not exist!"
non_existant="$non_existant $user"
else
exists="$exists $user"
fi
done
for isuser in $exists; do
#dseditgroup -o checkmember -m $isuser $group
dseditgroup -o edit -n $dirnode -u $admin -P $password -a $isuser -t user $group
done
for nonuser in $non_existant; do
echo $nonuser >> ./non_existant_users.txt
done
fi
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