With cut -c 8-13 myfile,
I am getting some numeric value.
In my shell script I am trying to assign something like this,
var=cut -c 8-13 myfile
But at the time of execution I am getting -c is not found.
If I dont assign, then script executes well.
Can we not simply use the value from one... (8 Replies)
If I run this command
networksetup -listallnetworkservices
I get the following output.
Ethernet
AirPort
*Parallels Host-Guest
*Parallels NAT
MY VPN
Ethernet 2
I want to make changes to only anything that contains the word "Ethernet" which I can do with grep.
But What I really need a... (6 Replies)
Hi, with this command:
cu -l /dev/ttyACM0 -s 9600 > name.txt
I put the output of the port in a txt
Is posible to do the same (or similar) in a var directly, inside a C program?
cu -l /dev/ttyACM0 -s 9600 > variable ?
I have trying this withs pipes, but i dont know how to... (6 Replies)
Hi all
I run my program prog.c in the following way :
$ ./prog 1 > output.txt where 1 is a user defined initial value used by the program.
But now I want to run it for many a thousand initial values, 1-1000, and store all the outputs in different files.
Like
$ ./prog 1... (1 Reply)
I would like to redirect output of command line in for loop as $line.
Output should be processed as line but instead it throw whole output.
Could somebody help me on how to redirect output of command line and process it line by line without sending output to any file.
below is my code ... (1 Reply)
Hi,
I'd like to assign the output of the find command to a variable.
What I need is to run the find command, and if it returns zero files, the program exits.
so i'm trying to assign the output of the find command to the $var1 variable....and then if this is less than one, I echo a... (2 Replies)
Hi,
This is my input file
cat input
chr1:100-200
chr1:220-300
chr1:300-400
Now, I would like to run a program that will take each of the input record
for i in `cat input`; do program $i | wc -l;done
the output will be something like
10
20
30
But, I would like to print the... (4 Replies)
I'm very much a newbie and hence why this is going to be a stupid question.
I'm attempting to create a korn shell script that pulls zone file locations and includes the copy command in the output. What?
getzonedir.ksh
#!/bin/ksh
while read -r domain
do ls */*"$domain" > $dir1
echo "cp... (5 Replies)
In the else of the main if condition .
else
set lnk = $(readlink -f <path> | cut -d '/' -f7)
echo "$lnk"
if ]
When I run the above on command line , the execution seems to be fine and I get the desired output. But when I try to assign it to a variable within a loop... (12 Replies)
Discussion started by: sankasu
12 Replies
LEARN ABOUT SUSE
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
This loop prints every value in a list together with the square and cube of the value:
set values {1 3 5 7 2 4 6 8} ;# Odd numbers first, for fun!
puts "Value Square Cube" ;# Neat-looking header
foreach x $values { ;# Now loop and print...
puts " $x [expr {$x**2}] [expr {$x**3}]"
}
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)