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How aboutcase "$(wc -c <file)" in 0) echo empty file;; 1) echo file with null record;; *) echo file with data;; esac
It would work on the given examples, but fail if a (non-*nix-text) file with a...

With the assumptions:
- not too many lines in "allpath.txt",
- not too many files found,
- bash being used,
wouldn't this do?awk '
FNR == NR {R[$1] = $2
next
...

As you can see, you have to go the extra mile to achieve what you intended, and the eval has some caveats tagged to it. In recents shells, this could be done way easier using arrays:

DBname=($@)...

You already have been given very good advice here, so there is little for me to add - which is why i can as well quit pretending to be helpful and start to outright annoy you:

i think you tackle...

A bit altered coding:
awk '{key=$1FS$2; a[key]=((key in a) ? a[key]","$3 : $3)} END {for (key in a) {print key, a[key]}}' testfile

@pravin27, didn't the previous post say that SQLite and XML should match on the file type=contents not name?

The following pipes the output of a simple find command into a while loop that does the...

You can't import shell variables into awk the way you do in above post. Please read man awk and/or many threads in here about how to use the -v option to pass variables to awk.

In your case, with...

Hi Pravin,

That will work however, while it will use less memory than a hash, it will use a lot more cycles. you are grepping through the (potentially large array) for every line of the file.
...

Try alsoawk '{T[int(($1-1)/70)] = $1} END {for (t in T) print T[t]}' file
69
139
210
345
418
490
492

You mean something like:
grep -Ff "File Containing Pattern List A" "sample input text file" | grep -Ff "File Containing Pattern List B"

Hi.

I keep a number of perl modules local to my home, not requiring the package manager. I generally don't put anything into /bin, /user/bin, etc., unless it is in the repositories. For many...

It would be a lot easier to see if you indented your code.

That's because the second time you (recursively) call function one, the else branch of if [ "$name" == "Sam" ]; will be taken.

BTW, you have a 16 bit char (0x 3000000, UTF8: 0xE3 0x80 0x80) in...

awk 'x[$1,$2,$3,$4,$5]++{$1=$2=$3=$4=$5=""}1' FS=, OFS=, infile

You could do this with awk, but it really isn't the right tool for this job.

The following seems to do what you want and should work on AIX:
#!/bin/ksh
file="ABCD_XYZ_20130302223203.xml"...

Hi, try:
date --date="$(date +%Y%m15) 1 month ago" +%Y%m

This behavior occurs, because februari 30 does not exist. So it is best to use the middle of the month to calculate the previous month..
...

Hi Pravin, I could have used any file descriptor, but I used 3 because 0,1 and 2 are taken by stdin, stdout and stderr. At the bottom of the loop I am redirecting file descriptor 3 to take its input...

@LeftoverStew, tt is a bit more complicated than that. A link in the same directory, means making the link to the file name only (without the path). Also, there are all sorts of error condition that...

xargs -n1 <yourfile

Q1:
Given these variables:
A="a b c d e f g 1 2 3 4 5"
B="c 3"
You could try:

C=
for i in $A; do
for j in $B; do
if [ "$i" = "$j" ]; then
continue 2
fi
done
C="$C$i...

How about:

my $file = "$WORK_DIR/tmpdata.asc";

open my $info, $file or die "Could not open $file: $!";
my %line;
local @ARGV = ($file);
my @temps;

while ( <$info> ) {
my $x1 =...

One more way to get expected output

$ cat <<eof | awk 'gsub(/[[:alpha:]]|[[:punct:]]/,x)'
n<>the<>96427210 861521305 123257583
n<>obj<>79634223 861521305 79634223
n<>nmod<>68404733 861521305...

Parameter number 5 of localtime() is month number (0 for Janurary, 1 for Feburary ... 11 for December). So we need to convert the input string from a 3 character string (Jan, Feb, etc) to and...

In CarloM's very good answer - the >| is a POSIX required shell redirection operator - it overrides the noclobber option. You seldom see it in posts on this forum.

Shorthand for truncating a file...

There's a few ways:

remove or rename the old file.
unset noclobber (and set it back after).
force redirection using script >| file.