10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi All
I have a source file named ABC-20150613 to 20150613.zip. I was trying to execute the below command on this source file, but its telling file is not available in that path and giving me some random file names.
ls -ltr| for z in ABC-????????*to*????????*.zip
do unzip $z -d
done
I... (5 Replies)
Discussion started by: ginrkf
5 Replies
2. Shell Programming and Scripting
Hi,
I am having a file say list1 with a output like below
jun 12 18:23
may 20 18:23
Now i want to pass the above two values into for loop,I have written a script like this.
#!/bin/bash
a=`cat list1`
for i in $a
do
echo "HI $i"
done
expected output:
HI jun 12 18:23 (3 Replies)
Discussion started by: sumanthupar
3 Replies
3. Shell Programming and Scripting
I have a loop like
while read i
do
echo "$i"
.
.
.
done < tms.txt
The tms.txt contians data like
2008-02-03 00:00:00
<space>00:00:00
.
.
.
2010-02-03 10:54:32 (2 Replies)
Discussion started by: machomaddy
2 Replies
4. Shell Programming and Scripting
How do I loop thru space separated values in a variable?
I hate to use very complicated counter increment logic for this kind of simple problem.
Expected result(using ksh)
$>echo "aaa bbbb cccc" | <looping code here>
var=aaa
var=bbbb
var=cccc
$>echo "aaa bbbb cccc" | while IFS=" "... (12 Replies)
Discussion started by: kchinnam
12 Replies
5. Shell Programming and Scripting
Hi Everyone!
I want to build sql inserts from a list of countries/regions saved in a file. The list looks like this:
United Kingdom
Czech Republic
...
The script I run is:
while read i;
do
var=`expr $var + 1`;
echo "INSERT INTO calltypes VALUES($var, '$i','$i');" >>... (5 Replies)
Discussion started by: linuca
5 Replies
6. Shell Programming and Scripting
I have a file with the following contents
# more hello.txt
man
hello man
whereru
The shell script i have tries to echo the contents of the file hello.txt
for i in `cat hello.txt`
do
echo $i
done
but the output i am getting is taking the space as a new line..
#... (3 Replies)
Discussion started by: Tuxidow
3 Replies
7. Shell Programming and Scripting
for cmdopts in $*;do
case $cmdopts in
-mode)
mode="$2";shift 2
;;
-server)
server="$2";shift 2
;;
-Id)
Id="$2";shift 2
;;
-passwd)
passwd="$2";shift 2
;;
-rmtDir)
rmtDir="$2";shift 2
;;
-lcDir)
... (9 Replies)
Discussion started by: pinnacle
9 Replies
8. Shell Programming and Scripting
Hi All
I need to put a bunch of specific files in a directory (with loads of other files), into a tar archive. The best way I thought of doing this was putting the filenames into a file, reading them line by line in a for loop, and then adding them to a tar acrhive.
However the filenames have... (6 Replies)
Discussion started by: saabir
6 Replies
9. Shell Programming and Scripting
Hi All,
I know there's a really simple answer to this but I just can't think of it :)
I'm processing a file which has lines containing white space i.e.
And I want to perform some awk on each line but when I do the following:
for US in $( cat /tmp/unique-strings.tmp | sed 's/\/\\]/g'... (6 Replies)
Discussion started by: pondlife
6 Replies
10. Shell Programming and Scripting
I have a script that converts a file into an html table. This script works fine for a 1 column table. However, I'm trying to do this for a multi-column table. My input file will look something like this:
a b c
d e f
g h i
My script basically works by taking in each line and putting that... (2 Replies)
Discussion started by: eltinator
2 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)
