09-14-2006
10 More Discussions You Might Find Interesting
1. Programming
Hello!
First of all, sorry for my English, I'm not a native English speaker.
I know, that printf() function uses write() function. "man cancellation" says that write() function is a cancellation point. But when I call pthread_cancel() for my thread, which calls printf() in infinite cycle, it... (4 Replies)
Discussion started by: prankster
4 Replies
2. Programming
Hello *NIX gurus,
I have a slight perplexing problem with multiple forks giving different results... Here is the deal.
From what I undestand, a fork() call starts executing from the next instruction that follows the fork() call. That means it inherits the PC counter register value of the... (4 Replies)
Discussion started by: navigator
4 Replies
3. Shell Programming and Scripting
can you take input from another command and do printf?
such as
awk '{print $2,$1}' | sort -k1,1 -k2,2 | printf "%-10s,%15s"
this does not work.. but there must be a way.. please help me..
thank you. (3 Replies)
Discussion started by: hankooknara
3 Replies
4. Shell Programming and Scripting
echo $bbsize
1.5
echo $fillpercent
.95
echo $bbsize | awk '{printf "%.2f\n",$0*$fillpercent}'
2.25
echo $bbsize | awk '{printf "%.2f\n",$0*.95}'
1.42
1.42 is what I'm expecting...
echo $blocksize
4096
echo $bbsize | awk '{printf "%.2f\n",$0*$blocksize}'
2.25
echo $bbsize |... (3 Replies)
Discussion started by: xgringo
3 Replies
5. Shell Programming and Scripting
Hi Friends,
Scripting newb here. So I'm trying to create a geektool script that uses awk and printf to output certain fields from top (namely command, cpu%, rsize, pid and time, in that order). After much trial and error, I've pretty much succeeded, with one exception. Any process whose name... (3 Replies)
Discussion started by: thom.mattson
3 Replies
6. Shell Programming and Scripting
Target file contains short text (never more than 1 line) and filenames.
The format is, e.g.,:
TEXT1
filename1
TEXT2
TEXT3
filename3dddd
filename3dddd
TEXT4
filename4
TEXT5
filename5dddd
filename5dddd
filename5
where dddd is a random 4-digit whole number.
Desired output: (4 Replies)
Discussion started by: uiop44
4 Replies
7. Shell Programming and Scripting
Hi,
I am using the following code to assign a count value to a variable. But I get nothing. Do you see anything wrong here.
I am new to all this.
$CTR=`remsh $m -l $MACHINES{$m} -n cat $output | grep -v sent | grep \"$input\" | sort -u | awk '{print $5}'`;
Upto sort - u it's... (2 Replies)
Discussion started by: nurani
2 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I am using below awk code to convert a csv file data into fixed file format.
awk 'BEGIN { FS = ","
fmt = "%10s%010d%10s%d%1d\n" }
NR>1 { printf fmt, $1, $2, $3, $4*100, $5 }' /data/mydata.csv > /data/fixed.dat
Data in mydata.csv
================... (1 Reply)
Discussion started by: kbmkris
1 Replies
9. Shell Programming and Scripting
Hi,
I am using below awk code to convert a csv file data into fixed file format.
awk 'BEGIN { FS = ","
fmt = "%10s%010d%10s%d%1d\n" }
NR>1 { printf fmt, $1, $2, $3, $4*100, $5 }' /data/mydata.csv > /data/fixed.dat
Data in mydata.csv
================... (2 Replies)
Discussion started by: kbmkris
2 Replies
10. Shell Programming and Scripting
Hi Experts,
Quick question:
I am trying to get the output with decimal and floating point but not working:
echo "20.03" | awk '{printf "%03d.2f\n" , $0 }'
020.2f
How to get the output as :
020.03
Thank you. (4 Replies)
Discussion started by: rveri
4 Replies
LEARN ABOUT REDHAT
foreach
foreach(n) Tcl Built-In Commands foreach(n)
__________________________________________________________________________________________________________________________________________________
NAME
foreach - Iterate over all elements in one or more lists
SYNOPSIS
foreach varname list body
foreach varlist1 list1 ?varlist2 list2 ...? body
_________________________________________________________________
DESCRIPTION
The foreach command implements a loop where the loop variable(s) take on values from one or more lists. In the simplest case there is one
loop variable, varname, and one list, list, that is a list of values to assign to varname. The body argument is a Tcl script. For each
element of list (in order from first to last), foreach assigns the contents of the element to varname as if the lindex command had been
used to extract the element, then calls the Tcl interpreter to execute body.
In the general case there can be more than one value list (e.g., list1 and list2), and each value list can be associated with a list of
loop variables (e.g., varlist1 and varlist2). During each iteration of the loop the variables of each varlist are assigned consecutive
values from the corresponding list. Values in each list are used in order from first to last, and each value is used exactly once. The
total number of loop iterations is large enough to use up all the values from all the value lists. If a value list does not contain enough
elements for each of its loop variables in each iteration, empty values are used for the missing elements.
The break and continue statements may be invoked inside body, with the same effect as in the for command. Foreach returns an empty string.
EXAMPLES
The following loop uses i and j as loop variables to iterate over pairs of elements of a single list. set x {} foreach {i j} {a b c d e f}
{
lappend x $j $i } # The value of x is "b a d c f e" # There are 3 iterations of the loop.
The next loop uses i and j to iterate over two lists in parallel. set x {} foreach i {a b c} j {d e f g} {
lappend x $i $j } # The value of x is "a d b e c f {} g" # There are 4 iterations of the loop.
The two forms are combined in the following example. set x {} foreach i {a b c} {j k} {d e f g} {
lappend x $i $j $k } # The value of x is "a d e b f g c {} {}" # There are 3 iterations of the loop.
SEE ALSO
for(n), while(n), break(n), continue(n)
KEYWORDS
foreach, iteration, list, looping
Tcl foreach(n)