I do little bash scripting so sorry for my ignorance.
How do I compare if the two variable not match and if they do not match run a command.
I was thinking a for loop but then I need another for loop for the 2nd list and I do not think that would work as in the real world there could be >= 100 entries in the variables.
If VAR2 does not contain an entry in VAR1 create this missing entry and do xyz else do yz.
Last edited by radoulov; 08-02-2011 at 10:53 AM..
Reason: Code tags.
If I had a list of numbers in two different files, what would be the fastest and easiest way to find out which numbers in list B are not in list A without reading each number in list B one at a time and using grep thousands of times against list A?
I have two very long lists of numbers and the... (4 Replies)
I have two very large datasets (>100MB) in a simple vertical list format. They are of different size and with different order and formatting (e.g. whitespace and some other minor cruft that would thwart easy regex).
Let's call them set1 and set2.
I want to check set2 to see if it contains... (2 Replies)
File_A contains Strings:
a
b
c
d
File_B contains Strings:
a
c
z
Need to have script written in either sh or ksh. Derive resultant files (File_New_A and File_New_B) from lists File_A and File_B where string elements in File_New_A and File_New_B are listed below.
Resultant... (7 Replies)
hello all,
I wonder if anybody might be able to help with this.
I have file 1 and file2.
Both files may contain thousands of lines that have variable contents.
file1
234GH
5234BTW
89er
678tfg
234
234YT
tfg456
wert
78gt
gh23444 (7 Replies)
Hi.
I am trying to write a Python programme that compares two different text files which both contain a list of words. Each word has its own line
worda
wordb
wordc
I want to compare textfile 2 with textfile 1, and if there's a word in textfile 2 that is NOT in textfile 1, I want to... (6 Replies)
Hi everybody!
I'm trying to delete some elements from a list with two elements on each row agreeing with the elements in another list. Pratically I want a perl script able to take each element of the second list (that is a single column list), compare it with both elements of each row from the... (3 Replies)
I have two files A and B listing ip addresses
and all the ip addresses in B are in A, and A includes other ip addresses
now I want to get the list of the ip addresses that are in A but not in B
how to achieve this? thanks (1 Reply)
Hello,
I'm new to the python programming, and I have a question.
I have to write a program that prints a receipt for a restaurant. The input is a list which looks like:
product1
product3
product8
....
In the other input file there is a list which looks like:
product1 coffee 5,00... (1 Reply)
Hello,
i have a script that should compare between ${ARRAY}
that contains all fstab record like this :
>>echo ${ARRAY}
/ /boot
between all mountpoints in my df that is stord in ${ARRAY2}
>>echo ${ARRAY2}
/ /boot /dev/shm /var/spool/asterisk/monitor
now i have this loop:
for i in... (6 Replies)
I all
I have written a bash script for compare two date. One of those is a result of query, and another is current date.
I have a problem with the format, because the first is 09/12/19 18:50:30 but for having this result I have to do
d1DB=$(date -d "$valData" +'%m/%d/%y %T')
and the second... (9 Replies)
Discussion started by: rdie77
9 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)