I am using the csh, because it is part of the standard install of FreeBSD 8.1 x64. This script happens to be tested on a sandbox machine that is reinstalled every few days.
I currently have the following script ("x" appended to be sure that variables do not interfere with reserved words):
This leads to a Command not found error, regardless of whether I use eval, `` quotes, extra parentheses etc.
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)
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)
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)
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)
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)
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)
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)
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)
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
LEARN ABOUT SUSE
eval
eval(n) Tcl Built-In Commands eval(n)
__________________________________________________________________________________________________________________________________________________NAME
eval - Evaluate a Tcl script
SYNOPSIS
eval arg ?arg ...?
_________________________________________________________________DESCRIPTION
Eval takes one or more arguments, which together comprise a Tcl script containing one or more commands. Eval concatenates all its argu-
ments in the same fashion as the concat command, passes the concatenated string to the Tcl interpreter recursively, and returns the result
of that evaluation (or any error generated by it). Note that the list command quotes sequences of words in such a way that they are not
further expanded by the eval command.
EXAMPLES
Often, it is useful to store a fragment of a script in a variable and execute it later on with extra values appended. This technique is
used in a number of places throughout the Tcl core (e.g. in fcopy, lsort and trace command callbacks). This example shows how to do this
using core Tcl commands:
set script {
puts "logging now"
lappend $myCurrentLogVar
}
set myCurrentLogVar log1
# Set up a switch of logging variable part way through!
after 20000 set myCurrentLogVar log2
for {set i 0} {$i<10} {incr i} {
# Introduce a random delay
after [expr {int(5000 * rand())}]
update ;# Check for the asynch log switch
eval $script $i [clock clicks]
}
Note that in the most common case (where the script fragment is actually just a list of words forming a command prefix), it is better to |
use {*}$script when doing this sort of invocation pattern. It is less general than the eval command, and hence easier to make robust in |
practice. The following procedure acts in a way that is analogous to the lappend command, except it inserts the argument values at the
start of the list in the variable:
proc lprepend {varName args} {
upvar 1 $varName var
# Ensure that the variable exists and contains a list
lappend var
# Now we insert all the arguments in one go
set var [eval [list linsert $var 0] $args]
}
However, the last line would now normally be written without eval, like this: |
set var [linsert $var 0 {*}$args] |
SEE ALSO
catch(n), concat(n), error(n), interp(n), list(n), namespace(n), subst(n), tclvars(n), uplevel(n)
KEYWORDS
concatenate, evaluate, script
Tcl eval(n)