!! to execute the previous command again, !-n to execute again the nth to last command !foo to execute again the last command beginning with the string foo !?foo to execute again the last command containing the string foo
Append
to display rather than execute the command.
Hi there,
i would like to repeat a command in a shell sript (bash)
the script starts with a menu to choose a menu point to do something ....
on the end of the script i would like to restart the programm to choose the menu points on the beginning.
I would also make a sript that send... (2 Replies)
Hi ,
after pressing down arrow,up arrow
I want to find previous,next command in unix
wat can i do for tat plz tell me
I am accesing unix server thru telnet.
my shell prompt ksh (4 Replies)
Hi,
how to do that ? I mean only print it but not execute. I'm using putty to interact with ksh.
(in windows cmd up arrow does the job)
thanks
vilius (5 Replies)
HI
I have a text file named docs with 100 filenames with full directory path one by one. I want to perform an action on all of them, the action i want to do this chown bin:bin <filename>. The <filename> should be each line in the docs text file. Please give the code. Somebody told to use for... (2 Replies)
Is there a way to repeat the output of the last command for filtering without running the command again? All I could think of was to copy all the data to a text file and process it that way, is there another way? Like say I want to grep server.server.lan from a dtrace that was pages long after I... (5 Replies)
How to repeat the execution of a simple command like the following for 1 sec ?
echo Hi
The completion time for the command is not known, but we need to calculate the number of times this commans executes successfully within 1 sec.
Thanks
Kumarjit (5 Replies)
hi all,
I use
date +%Y
which gives Current year.
Requirement: I want previous year to be printed. Please help me.
Note: I tried
date +%d/%m/%Y -d "-1 years" which is not working. (10 Replies)
I came across a site to learn java and they give you practice problems to do. I was wondering if anyone can help me with this since I am totally new to Java. Here is the first problem:
Write a program that will read in a name from the command line and write it out 100 times.
Thank you for any... (10 Replies)
Assume i have typed 4 commands in the past like
vi `ls -t |head -n 1`
tail -2 test.txt
ls -lrt | grep "/etc/profile.d"
pwd
Now if i type r p it should execute the command "pwd" likewise r t should execute tail -2 test.txt.
Note: esc k and using up arrow and down arrow will get this work... (3 Replies)
Discussion started by: Ramanareddygv
3 Replies
LEARN ABOUT OSX
code
code(n) [incr Tcl] code(n)
__________________________________________________________________________________________________________________________________________________NAME
code - capture the namespace context for a code fragment
SYNOPSIS
itcl::code ?-namespace name? command ?arg arg ...?
_________________________________________________________________DESCRIPTION
Creates a scoped value for the specified command and its associated arg arguments. A scoped value is a list with three elements: the
"@scope" keyword, a namespace context, and a value string. For example, the command
namespace foo {
code puts "Hello World!"
}
produces the scoped value:
@scope ::foo {puts {Hello World!}}
Note that the code command captures the current namespace context. If the -namespace flag is specified, then the current context is
ignored, and the name string is used as the namespace context.
Extensions like Tk execute ordinary code fragments in the global namespace. A scoped value captures a code fragment together with its
namespace context in a way that allows it to be executed properly later. It is needed, for example, to wrap up code fragments when a Tk
widget is used within a namespace:
namespace foo {
private proc report {mesg} {
puts "click: $mesg"
}
button .b1 -text "Push Me" -command [code report "Hello World!"]
pack .b1
}
The code fragment associated with button .b1 only makes sense in the context of namespace "foo". Furthermore, the "report" procedure is
private, and can only be accessed within that namespace. The code command wraps up the code fragment in a way that allows it to be exe-
cuted properly when the button is pressed.
Also, note that the code command preserves the integrity of arguments on the command line. This makes it a natural replacement for the
list command, which is often used to format Tcl code fragments. In other words, instead of using the list command like this:
after 1000 [list puts "Hello $name!"]
use the code command like this:
after 1000 [code puts "Hello $name!"]
This not only formats the command correctly, but also captures its namespace context.
Scoped commands can be invoked like ordinary code fragments, with or without the eval command. For example, the following statements work
properly:
set cmd {@scope ::foo .b1}
$cmd configure -background red
set opts {-bg blue -fg white}
eval $cmd configure $opts
Note that scoped commands by-pass the usual protection mechanisms; the command:
@scope ::foo {report {Hello World!}}
can be used to access the "foo::report" proc from any namespace context, even though it is private.
KEYWORDS
scope, callback, namespace, public, protected, private
itcl 3.0 code(n)