03-06-2011
You don't need the "" with the select version, actually.
It is used in the first version because arrays are zero-based (the first element would be index 0). The "" was to use up element 0, so that the usernames would begin at index 1.
For this problem, I would probably use the select approach.
What shell do you use?
10 More Discussions You Might Find Interesting
1. Programming
I am facing a strange error while creating posix threads:
Given below are two snippets of code, the first one works whereas the second one gives a garbage value in the output.
Snippet 1
This works:
--------------
int *threadids;
threadids = (int *) malloc (num_threads * sizeof(int));
... (4 Replies)
Discussion started by: kmehta
4 Replies
2. Shell Programming and Scripting
echo -e "Enter in a username : \c"
read username
grep "^$username:" /etc/passwdWhat I'm trying to do is take in a username from my script and I need to be able to check if that username already exists. If it does the script should display a message saying that the user already exists and exit.
... (2 Replies)
Discussion started by: shadowcat
2 Replies
3. Shell Programming and Scripting
Hi, I am a new on this forum but i like :) I need a script in bash which will be crating a new user with folder for websites. For example: I will run this program and he creating a new user(with my name) and folder whcich name like user and if i will localho/~user in browser, she show me files from... (1 Reply)
Discussion started by: puclavv
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I wants to create the users for multiple machine from single main server using the shell script ,can you please help me on this.... (2 Replies)
Discussion started by: Rahulne25
2 Replies
5. Shell Programming and Scripting
Hello Everybody
i am a newbie to the bash scripting.please can someone help me out here.i want to write a script on creating 10 users with passwords and comparing the users to the ones in /etc/passwd file.am i gonna use arrays in creating the 10 users or what?and again, how do i compare both... (1 Reply)
Discussion started by: bruno_brunt
1 Replies
6. Shell Programming and Scripting
I need somebody who could help with an exercise.
You have a text file called users.txt with this info inside:
users.txt:
user1:1234:/home/homedir1 ;
user2:1234:/home/homedir2 ;
user3:1234:/home/homedir3 ;
user4:1234:/home/homedir4 ;
The script should create an user using the... (2 Replies)
Discussion started by: marcosruiz
2 Replies
7. Red Hat
Hi friends could you please share me the script to create more users in one server except newusers, is there any option to change secondary group and how to print passwd and changing the age all these things how can i edit in newsers.. please help me (0 Replies)
Discussion started by: indiankrish
0 Replies
8. Shell Programming and Scripting
for UserName in `cat users` ; do useradd -d /u02 -s /usr/libexec/openssh/sftp-server -G ftp-users $UserName ;
PassWord=$( echo $( tr '' '' <<< ${UserName:0:1} )${UserName:1} ) ;
echo "$PassWord@123" | passwd $UserName --stdin ; done
can some one explain what the bold text do
Please use... (5 Replies)
Discussion started by: James0806
5 Replies
9. Shell Programming and Scripting
Dear Friends,
Please help me on this
my script name is send.csh
In this i have written the statement like this
set args = ( city state country price )
I want to pass this array to another c shell called receiver.csh. and i want to use it in this c shell
or
how to pass to... (2 Replies)
Discussion started by: SA_Palani
2 Replies
10. HP-UX
Hi,
I have a file with usernames, and the comment section, e.g :
Data removed by request of sanchitadutta91, 20 May 2020
I need to add these users into a server. Is it possible to use a script to create the users, together with the comment ?
From the commandline to add one user, the... (2 Replies)
Discussion started by: anaigini45
2 Replies
lindex(n) Tcl Built-In Commands lindex(n)
__________________________________________________________________________________________________________________________________________________
NAME
lindex - Retrieve an element from a list
SYNOPSIS
lindex list ?index...?
_________________________________________________________________
DESCRIPTION
The lindex command accepts a parameter, list, which it treats as a Tcl list. It also accepts zero or more indices into the list. The
indices may be presented either consecutively on the command line, or grouped in a Tcl list and presented as a single argument.
If no indices are presented, the command takes the form:
lindex list
or
lindex list {}
In this case, the return value of lindex is simply the value of the list parameter.
When presented with a single index, the lindex command treats list as a Tcl list and returns the index'th element from it (0 refers to the
first element of the list). In extracting the element, lindex observes the same rules concerning braces and quotes and backslashes as the
Tcl command interpreter; however, variable substitution and command substitution do not occur. If index is negative or greater than or
equal to the number of elements in value, then an empty string is returned. The interpretation of each simple index value is the same as |
for the command string index, supporting simple index arithmetic and indices relative to the end of the list.
If additional index arguments are supplied, then each argument is used in turn to select an element from the previous indexing operation,
allowing the script to select elements from sublists. The command,
lindex $a 1 2 3
or
lindex $a {1 2 3}
is synonymous with
lindex [lindex [lindex $a 1] 2] 3
EXAMPLES
lindex {a b c}
-> a b c
lindex {a b c} {}
-> a b c
lindex {a b c} 0
-> a
lindex {a b c} 2
-> c
lindex {a b c} end
-> c
lindex {a b c} end-1
-> b
lindex {{a b c} {d e f} {g h i}} 2 1
-> h
lindex {{a b c} {d e f} {g h i}} {2 1}
-> h
lindex {{{a b} {c d}} {{e f} {g h}}} 1 1 0
-> g
lindex {{{a b} {c d}} {{e f} {g h}}} {1 1 0}
-> g
SEE ALSO
list(n), lappend(n), linsert(n), llength(n), lsearch(n), lset(n), lsort(n), lrange(n), lreplace(n), string(n) |
KEYWORDS
element, index, list
Tcl 8.4 lindex(n)