10 More Discussions You Might Find Interesting
1. Programming
Hi friends
When I compile thic program by gcc filename, it shows no error.
But after that if I execute the program gets stuck.
Can any one find out.
#include<stdio.h>
#include<sys/types.h>
#include<sys/mman.h>
#include<stdlib.h>
#include<fcntl.h>
#include<sys/stat.h>... (6 Replies)
Discussion started by: gokult
6 Replies
2. Programming
Hi friends
NO errors, but when I try to execute the program it gets struck.
Can any one find it out.
#include<stdio.h>
#include<sys/types.h>
#include<sys/mman.h>
#include<stdlib.h>
#include<fcntl.h>
#include<sys/stat.h>
#include<unistd.h>
#include<signal.h>
#include<string.h>
... (0 Replies)
Discussion started by: gokult
0 Replies
3. Shell Programming and Scripting
Hi:
I have a touble with executing a variable that stores a unix command string.
The following would be excuted fine:
command='ls -l'
`echo $command`
However, the following gives me an error:
command='(uuencode file1 file1; uuencode file2 file2) | mailx email_id'
`echo... (1 Reply)
Discussion started by: sagewise
1 Replies
4. Shell Programming and Scripting
I'm using whatever the scripting is in this copy of busybox ! So not the full boxed set sometimes.
If I do
cmd="echo fred"
$cmd
the system prints "fred"
if I do
cmd="fred=9"
$cmd
it barfs.
Is there a simple way to put a varabble assignment in a string and execute it?
... (2 Replies)
Discussion started by: dexdyne
2 Replies
5. Shell Programming and Scripting
Hi,
I'm building an installation system that uses separate data
files that contain the individual characteristics of each package.
Within the data file, I would like to incorporate a section that
contains a bash script that is loaded into an array which is
then redirected to bash to be... (13 Replies)
Discussion started by: ASGR
13 Replies
6. Shell Programming and Scripting
Hello everybody!
Here is my problem: I try to write a script that searches for files with several extensions using the find utility. The file extensions are defined in a list so I build a string (variable) of the pattern arguments with these extensions but can't get find working. Here is a code... (3 Replies)
Discussion started by: Ro_land
3 Replies
7. Shell Programming and Scripting
I am executing the below in telnet
#!/usr/bin/ksh
File1=simple.txt # The file to check
LogFile=simple.log # The log file
DelayMax=30 # Timeout delay
Tolerance=2
# BEGIN ##############################
while true
do
StampNow=$(date +%s)/60 # stamp in minutes
... (3 Replies)
Discussion started by: chinniforu2003
3 Replies
8. Shell Programming and Scripting
Hey there,
I am trying to pass a command as argument to a function.
The command shows up in $1.
Now I want to execute this command, but if I do a $1
./sample
"bla/blaprintf: warning: ignoring excess arguments, starting with `bla/bla'
The code is :
#!/bin/ksh
fn()
{
$1
}
fn... (3 Replies)
Discussion started by: shriyer
3 Replies
9. Shell Programming and Scripting
Hi everyone!
I need some help with my shell script :(
I am sending a shell command from a html text input to a cgi. Then, I store it into a variable. For example
var="ps -axu"
echo `$var`
This functions properly. But consider the following...
var="ps -axu | grep root"
Now, I want... (2 Replies)
Discussion started by: Nene
2 Replies
10. Shell Programming and Scripting
Hi,
I am trying to export some 50 tables and i want to write a loop and execute the script for every table. I did for one table and its running. Can any one help me for setting a loop and running the script for all the tables
thanks (6 Replies)
Discussion started by: srichunduru
6 Replies
uplevel(n) Tcl Built-In Commands uplevel(n)
__________________________________________________________________________________________________________________________________________________
NAME
uplevel - Execute a script in a different stack frame
SYNOPSIS
uplevel ?level? arg ?arg ...?
_________________________________________________________________
DESCRIPTION
All of the arg arguments are concatenated as if they had been passed to concat; the result is then evaluated in the variable context indi-
cated by level. Uplevel returns the result of that evaluation.
If level is an integer then it gives a distance (up the procedure calling stack) to move before executing the command. If level consists
of # followed by a number then the number gives an absolute level number. If level is omitted then it defaults to 1. Level cannot be
defaulted if the first command argument starts with a digit or #.
For example, suppose that procedure a was invoked from top-level, and that it called b, and that b called c. Suppose that c invokes the
uplevel command. If level is 1 or #2 or omitted, then the command will be executed in the variable context of b. If level is 2 or #1
then the command will be executed in the variable context of a. If level is 3 or #0 then the command will be executed at top-level (only
global variables will be visible).
The uplevel command causes the invoking procedure to disappear from the procedure calling stack while the command is being executed. In
the above example, suppose c invokes the command
uplevel 1 {set x 43; d}
where d is another Tcl procedure. The set command will modify the variable x in b's context, and d will execute at level 3, as if called
from b. If it in turn executes the command
uplevel {set x 42}
then the set command will modify the same variable x in b's context: the procedure c does not appear to be on the call stack when d is
executing. The command ``info level'' may be used to obtain the level of the current procedure.
Uplevel makes it possible to implement new control constructs as Tcl procedures (for example, uplevel could be used to implement the while
construct as a Tcl procedure).
namespace eval is another way (besides procedure calls) that the Tcl naming context can change. It adds a call frame to the stack to rep-
resent the namespace context. This means each namespace eval command counts as another call level for uplevel and upvar commands. For
example, info level 1 will return a list describing a command that is either the outermost procedure call or the outermost namespace eval
command. Also, uplevel #0 evaluates a script at top-level in the outermost namespace (the global namespace).
SEE ALSO
namespace(n), upvar(n)
KEYWORDS
context, level, namespace, stack frame, variables
Tcl uplevel(n)