10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi everybody,
I'm trying to use a foreach command with two lists. The file.txt looks like this:
var1: 100 200 300
var2: 3 6 9
I'm trying to use a foreach command to associate the two variables together. My script looks like this:
#! /bin/tcsh
set a=(`cat file.txt | grep 'var1' | cut -d... (8 Replies)
Discussion started by: SimonWhite
8 Replies
2. Shell Programming and Scripting
I have a foreach loop in a csh script and I noticed that it tries to find the files with the pattern *$searchpt* in the file name. I'm confused as I never specified checking for the files.
foreach f ( *$searchpt* )
set fnew = `echo $f | awk -v searchpat=$searchpt \
... (1 Reply)
Discussion started by: kristinu
1 Replies
3. Shell Programming and Scripting
I have a simple csh script that has a simple foreach loop that goes over numbers, from 1 to 10:
foreach n(1 2 3 4 5 6 7 8 9 10)
...
end
Now I want to expand the script to work on over a hundred consecutive n values. Obviously, typing all the numbers between 1 to 100 is an unreasonable... (7 Replies)
Discussion started by: mcbenus
7 Replies
4. UNIX for Dummies Questions & Answers
OK, so I am extremely rusty and am just getting back to Unix after 9 years.
I'm stuck on something easy. I want to search line-by-line for a string in a file, and I want to do this to a series of files in a directory.
This works fine to do the search:
while read i; do grep $i file2; done... (3 Replies)
Discussion started by: moldoverb
3 Replies
5. Shell Programming and Scripting
Hi everyone
Does anyone know what is wrong with this script. i keep getting errors
foreach filename (`cat testing1`)
set string=$filename
set depth=`echo "$string"
echo $depth
end
the error is the following
testing: line 1: syntax error near unexpected token `('
testing: line 1:... (3 Replies)
Discussion started by: ROOZ
3 Replies
6. Shell Programming and Scripting
Hi Guys,
I have a loop which uses a wildcard
i.e. foreach f (*)
but when I execute the tcsh file in unix then it gives me an error
->>>>>>>foreach: words not parenthesized<<<<<<<<<<-
Any help. (1 Reply)
Discussion started by: abch624
1 Replies
7. Shell Programming and Scripting
What am I doing wrong with this foreach loop?
foreach var ($argv)
@sum = $sum + $var (4 Replies)
Discussion started by: haze21
4 Replies
8. Shell Programming and Scripting
Hi,
I'm having a small issue here and I can't get it to work. I'm programming a script for bash and I need to do something to all the folder in a directory. So I'm in the directory and I want to use the foreach statement but I dont know how to reference all the folders of that directory. To make... (7 Replies)
Discussion started by: eltinator
7 Replies
9. Shell Programming and Scripting
#!/bin/bash
foreach x (67402996 67402998)
{
grep -a x FINAL2006.dat >> MISSING_RECORDS.dat
}
I'm trying to pass a list to the variable x, and then grep for that string in FINAL2006.dat...
Final2006.dat is in the same folder as my .sh file. I call this with a .cmd file...
At any rate,... (6 Replies)
Discussion started by: JimWork
6 Replies
10. UNIX for Dummies Questions & Answers
SaLAam
What is the best way to change a word withing a files name. I know I'm not clear enough I will give example : -
I have in /test/test N number of files like this
1662_WAITING
1666_WAITING
1670_DONE
1678_DONE
1663_WAITING
1667_WAITING
1673_WAITING ... (5 Replies)
Discussion started by: geoquest
5 Replies
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)