11-03-2019
awk array
Hello. I'm trying to figure out which one of these is not true about an awk array.
-You do not need to formally declare an array; it is created automatically on first assignment
-Array elements can only be addressed using an index
-A for loop can itterate over all indexes or keys in an array
-If an array element is accessed before it is assigned; the default value will be 0
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
How can find Array is NULL or not.
i wrote script using arrays but i want dislpy an message if arrary was Empty.
pls help me on this. (2 Replies)
Discussion started by: koti_rama
2 Replies
2. Shell Programming and Scripting
I have a raw data file:
70,1,1,-53.25
70,1,1,,,,-57.50
70,1,1,,,,,,,,,,-48.00
I want to have a output file with the formatting below:
70,1,1,-53.25,,,,-57.50,,,,,-48.00
I mean if these rows have the first similar three variables which will be group into one row. And I try to write a... (1 Reply)
Discussion started by: anhtt
1 Replies
3. Shell Programming and Scripting
Dear Experts,
I have a file containing text like below
123
456
789
012
345
I want to save each line in array.
and print each array index as per my requirement.
For Example array will print 456
array will print 012
Thanks for your Help. (14 Replies)
Discussion started by: Danish Shakil
14 Replies
4. Shell Programming and Scripting
Hi all,
i have a data array as follows.
array=ertfgj2345
array=456ttygkd
.
.
.
array=errdjt3235
so number or elements in the array can varies depending on how big the data input is.
now i have a variable, and it is $1 (there are $2, $3 and so on, i am only interested in $1).
... (9 Replies)
Discussion started by: usustarr
9 Replies
5. Shell Programming and Scripting
Hi I am trying to get data from an array and input it into awk. Please see below:
###
#!/bin/bash
#declare array
declare -a ARRAY
exec 10</path/to/arrayfile
let count=0
while read LINE <&10; do
ARRAY=$LINE
((count++))
done
#close file
exec 10>&-
ENDLOOP=0 (10 Replies)
Discussion started by: rocket_dog
10 Replies
6. Shell Programming and Scripting
hi,
can somebody explain me this?
probably i am overlooking something but i dont know what
why is not printed "7 9 11" instead of this?
$ echo "" | awk '{for(i=1;i<=3;i++){j=7;a=j;j=j+2;} print a,a,a; }'
7 7 7thanks (2 Replies)
Discussion started by: erik80
2 Replies
7. Shell Programming and Scripting
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
Discussion started by: shell_boy23
6 Replies
8. Shell Programming and Scripting
I'm trying to get the output from awk into a bash array. Here is my script.
#!/bin/bash
while :
do
app=$( osascript -e "tell application \"System Events\" to return name of every process whose frontmost is true" )
echo "$app"
if ava ]]
then
ps -ax | grep -v awk | pids=( $(awk... (5 Replies)
Discussion started by: nextyoyoma
5 Replies
9. Shell Programming and Scripting
Hello All,
Can you please help me with the below.
#!/bin/bash
ARR="No Differences In Stage Between HASH_TOTALS & HASH_TOTALS_COMP For UNINUM:0722075 PROVIDER:5 EXTRACT_DT:30-SEP-12 VER_NUM:1"
ARR="No Differences In Stage Between HASH_TOTALS & HASH_TOTALS_COMP For UNINUM:0722075 PROVIDER:5... (14 Replies)
Discussion started by: Ariean
14 Replies
10. Shell Programming and Scripting
Here's my code:
awk -F '' 'NR==FNR {
if (/time/ && $5>10)
A=$2" "$3":"$4":"($5-01)
else if (/time/ && $5<01)
A=$2" "$3":"$4-01":"(59-$5)
else if (/time/ && $5<=10)
A=$2" "$3":"$4":0"($5-01)
else if (/close/) {
B=0
n1=n2;
... (2 Replies)
Discussion started by: klane
2 Replies
LEARN ABOUT PHP
array_slice
ARRAY_SLICE(3) 1 ARRAY_SLICE(3)
array_slice - Extract a slice of the array
SYNOPSIS
array array_slice NULL (array $array, int $offset, [int $length], [bool $preserve_keys = false])
DESCRIPTION
array_slice(3) returns the sequence of elements from the array $array as specified by the $offset and $length parameters.
PARAMETERS
o $array
- The input array.
o $offset
- If $offset is non-negative, the sequence will start at that offset in the $array. If $offset is negative, the sequence will
start that far from the end of the $array.
o $length
- If $length is given and is positive, then the sequence will have up to that many elements in it. If the array is shorter than
the $length, then only the available array elements will be present. If $length is given and is negative then the sequence will
stop that many elements from the end of the array. If it is omitted, then the sequence will have everything from $offset up until
the end of the $array.
o $preserve_keys
- Note that array_slice(3) will reorder and reset the numeric array indices by default. You can change this behaviour by setting
$preserve_keys to TRUE.
RETURN VALUES
Returns the slice.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.2.4 | |
| | |
| | The default value of the $length parameter was |
| | changed to NULL. A NULL$length now tells the |
| | function to use the length of $array. Prior to |
| | this version, a NULL$length was taken to mean a |
| | zero length (nothing will be returned). |
| | |
| 5.0.2 | |
| | |
| | The optional $preserve_keys parameter was added. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
array_slice(3) examples
<?php
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 2); // returns "c", "d", and "e"
$output = array_slice($input, -2, 1); // returns "d"
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
// note the differences in the array keys
print_r(array_slice($input, 2, -1));
print_r(array_slice($input, 2, -1, true));
?>
The above example will output:
Array
(
[0] => c
[1] => d
)
Array
(
[2] => c
[3] => d
)
SEE ALSO
array_splice(3), unset(3), array_chunk(3).
PHP Documentation Group ARRAY_SLICE(3)