02-18-2009
Split while reading a line in shell
Thanks all.
Last edited by vijaykrc; 02-18-2009 at 09:18 PM..
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1. Shell Programming and Scripting
Hi,
I want to split before reading the complete line as the line is very big and its throwing out of memory. can you suggest.
when i say
#cat $inputFile | while read eachLine
and use the eachLine to split its throwing out of memory as the line size is more than 10000000 characters.
Can you... (1 Reply)
Discussion started by: vijaykrc
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2. Shell Programming and Scripting
Dear All,
I want to split single line into two line or three lines wherever “|” separated values comes using
Input line
test,DEMTEMPUT20100404010012,,,,,,,,|0070086|0070087,
output shoule be
test,DEMTEMPUT20100404010012,,,,,,,,0070086,
test,DEMTEMPUT20100404010012,,,,,,,,0070087, (14 Replies)
Discussion started by: arvindng
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3. Shell Programming and Scripting
Hi,
I need help to split lines from a file into multiple files.
my input look like this:
13
23 45 45 6 7
33 44 55 66 7
13
34 5 6 7 87
45 7 8 8 9
13
44 55 66 77 8
44 66 88 99 6
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Discussion started by: saint2006
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4. Shell Programming and Scripting
I am attempting to replace positions 44-46 with YYY if positions 48-50 = XXX.
awk -F "" '{if (substr($0,48,3)=="XXX") $44="YYY"}1' OFS="" $filename > $tempfile
But this is not working, 44-46 is still spaces in my tempfile instead of YYY. Any suggestions would be greatly appreciated. (9 Replies)
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5. Shell Programming and Scripting
I guess this has a simple solution but can't figure out now.
having:
x="H:a:b:c"
to get H:
echo $x|awk -F: {'print $1'}
how can I put REST of line in another one? i.e.
echo $rest
a:b:c
thanks
---------- Post updated at 08:58 PM ---------- Previous update was at... (5 Replies)
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Hi, I am trying to use an awk command to replace specific character positions on a line beginning with 80 with contents of another file.
The line beginning with 80 in file1 is as follows:
I want to replace the 000000000178800 (positions 34 - 49) on this file with the contents of... (2 Replies)
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7. Shell Programming and Scripting
Hi All,
Hope you guys had a wonderful weekend
I have a scenario where in which I have to read a file line by line
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Hi All
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9. Shell Programming and Scripting
I have a very long line in a file separated by "|" delimiter like below. Due to the length of the line, I find it very difficult to read to find a match line.
file = temp.txt
word 1| word 2 | word 3|....
I would like to read the file temp.txt and print out all words line by line like... (1 Reply)
Discussion started by: boldnbeautiful
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split(n) Tcl Built-In Commands split(n)
__________________________________________________________________________________________________________________________________________________
NAME
split - Split a string into a proper Tcl list
SYNOPSIS
split string ?splitChars?
_________________________________________________________________
DESCRIPTION
Returns a list created by splitting string at each character that is in the splitChars argument. Each element of the result list will con-
sist of the characters from string that lie between instances of the characters in splitChars. Empty list elements will be generated if
string contains adjacent characters in splitChars, or if the first or last character of string is in splitChars. If splitChars is an empty
string then each character of string becomes a separate element of the result list. SplitChars defaults to the standard white-space char-
acters.
EXAMPLES
Divide up a USENET group name into its hierarchical components:
split "comp.lang.tcl.announce" .
-> comp lang tcl announce
See how the split command splits on every character in splitChars, which can result in information loss if you are not careful:
split "alpha beta gamma" "temp"
-> al {ha b} {} {a ga} {} a
Extract the list words from a string that is not a well-formed list:
split "Example with {unbalanced brace character"
-> Example with {unbalanced brace character
Split a string into its constituent characters
split "Hello world" {}
-> H e l l o { } w o r l d
PARSING RECORD-ORIENTED FILES
Parse a Unix /etc/passwd file, which consists of one entry per line, with each line consisting of a colon-separated list of fields:
## Read the file
set fid [open /etc/passwd]
set content [read $fid]
close $fid
## Split into records on newlines
set records [split $content "
"]
## Iterate over the records
foreach rec $records {
## Split into fields on colons
set fields [split $rec ":"]
## Assign fields to variables and print some out...
lassign $fields
userName password uid grp longName homeDir shell
puts "$longName uses [file tail $shell] for a login shell"
}
SEE ALSO
join(n), list(n), string(n)
KEYWORDS
list, split, string
Tcl split(n)