07-29-2011
Thanks This works fine.
But is there any other option that can be used instead of Eval?
After getting it into a variable, is it possible to do the multiplication?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I would like to write a Korn shell script which will remove files older than a certain date. In my script, it will read a configuration file with the following entries:
# <directory> <filename wildcard>
#
/home/philip/log *.log
/home/philip/log1 delete-me*.log
The... (1 Reply)
Discussion started by: philip_dba
1 Replies
2. Shell Programming and Scripting
I have to find out the file system location of the script file inside script. for example a script "abc.sh" placed anywhere in the file system when executed shold tell by itself the location of it.
example
#pwd
/
#./abc
this is /
#cd /root
#./abc
this is /root
#cd /
#/root/abc
this... (10 Replies)
Discussion started by: asami
10 Replies
3. Shell Programming and Scripting
hello gurus,
When i run the command on shell
webalizer -p -n mydomain.com -c /path/to/my/log/webalizer.conf
it works fine and it creates stats for the given mydomain.com in the target output directory
but when i put it in a script same command and parameters but it goes weird and it... (0 Replies)
Discussion started by: eyes_drinker
0 Replies
4. Shell Programming and Scripting
Hi,
I have many perl scripts in single server, i am new to perl,
suggestions are appreciated.
connection string is hardcoded in all perl scripts
i need to make change the all perl scripts and there should be only one config file available in that server.
destination database is mysql... (3 Replies)
Discussion started by: prakash.gr
3 Replies
5. Shell Programming and Scripting
Dear All,
i am new to shell scripting, I am working on embedded system based on linux.I am supposed to the read the configuration file and edit another file.
presently I would like to read from the configuration file.It would be having values file one below.
There is chance of entering... (6 Replies)
Discussion started by: Ratheendran
6 Replies
6. Shell Programming and Scripting
Hi Guys
I am using one configuration file for reading some time out values.The format of the file is
A.Type = Number
A.Val = 2000
B.Type = Number
B.Val = 4000
Now my requirement is I need to write a shell script in Solaris where i need to increase these timeout values by 10 times of... (3 Replies)
Discussion started by: mr_deb
3 Replies
7. Shell Programming and Scripting
Hi,
I have initailized a varaible EBID as typeset Long EBID=0
i am calculating value of EBID using certian formula as below:
(( CURR_EBID= ($BANDINDEX << 27) | ($CURR_FREQ << 16) | ($CURR_CELLID << 4) | $CURR_SECTOR_VALUE ))
return $CURR_EBID
The output is as below:
+ (( CURR_EBID=... (6 Replies)
Discussion started by: kasanur
6 Replies
8. Shell Programming and Scripting
Hi,
Taking sum up all values inside the file by using the below command:
paste -sd+ filenmae | bc
Getting some error like "0705-001: building space exceeded on line1 stdin"
The original data looks like
SPACE SPACE SPACE 0.123 JOBNAME1
SPACE SPACE 20.325 JOBNAME2
SPACE SPACE... (2 Replies)
Discussion started by: NareshN
2 Replies
9. Shell Programming and Scripting
Hi ,
DIR1 has only one file with .txt extension , trying to get the size of that file using the following script
#!/bin/ksh
foldr_1="/etc/DIR1"
#echo "$foldr_1"
sze_fdr1=$(ls -ltr foldr_1/*.txt |awk '{ print $5 }')
echo "$sze_fdr1"
After executing the above script getting... (1 Reply)
Discussion started by: smile689
1 Replies
10. UNIX for Beginners Questions & Answers
Good day guys,
I'm having trouble in creating a logic when it comes to replacing the values inside a file.
I tried using sed command but it just doesn't work the way I want it to be.
Here is what I'm trying to achieve.
If my input file contains the values below.
NAME++GUEST1 ++GUESS2++... (3 Replies)
Discussion started by: asdfghjkl
3 Replies
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)