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That is correct. Thanks. As I said before, I did expect adding the extra \ would work, was surprised it did not. I just copied the posted script verbatim, did not see the extra semicolon. Here is the...

That's for sending the exact input file and script you are using. That really helped.

I took another look, tried several things, learned it's a sticky wicket, found something that seems to work...

$ sed -n -e "s/Date and Time: \(.*\) MST/\1/p" -e "s/Number of Records: *//p" input
2013-05-11 12:23:12
000005

You set the environment variable in $HOME/.profile or $HOME/.bash_profile or other shell configuration file that your shell is using. Using bash shell, you would add a line saying:
export...

I read it as "n == 3". But you're right, it's not really clear.

If the intent is "n >= 3", then you either:
- Use the scrutinizer shorter solution designed for "n >= 3", or
- Change == 3 to >=...

Here is a way to do it using awk.
$ awk '{cnts[$1]++} $2 > fld2[$1] {fld2[$1]=$2; fld0[$1]=$0} END {for (key in cnts) { if (cnts[key] == 3) print fld0[key] }}' input3
A 5
B 5
C 10

Here's how to do it in general:
$ cat test.awk
BEGIN { FS=OFS="," }
{n=0; for (i=1;i<=NF;i++) {($i ~ /(*)/) && n++}}
{ print "Fields: " NF, " Matches: " n}
n == 0 {$NF="OFFLINE"}
n < NF-3...

You pass variables from a.sh to b.sh by adding the variable after the script name, such as b.sh "$x". You receive variables in b.sh by using $1 for the first variable passed, $2 for the second, etc....

awk 'NR>1 && !/^\+/{print RS}1 END{print RS}' ORS= file1
Should be (using gawk anyway, did not test with other awk versions):
awk 'NR>1 && !/^\+/{print RS}{print} END{print RS}' ORS= file1

$ cat...

Here is one possible way:
ls | grep -v dasd_91197.trc | xargs rm
If more than one file to retain:
ls | grep -v -e dasd_91197.trc -e someother.trc | xargs rm

---------- Post updated at 04:49 AM...

Here is the input you most recently posted:
$ cat input
2 9647701612350 9647701168456 262 23 1303031257462B0300 1303031259182B0300 92 9647701146402 0
5 ...

Here's how I would put it. Much of this you probably already know.

If you declare int n = 4;, then the compiler reserves a special location to store an int value, and stores 4 there. No big deal....

I'm not sure what the hadoop command is doing. Anyway, maybe this might work:

SOURCE=/path/to/files/
find "$SOURCE" -type f -mtime -1 -exec cp -v "{}" /usr/path/ \;

Because arr[0] is exactly the same as *arr

In general, arr[i] is exactly the same as *(arr + 1)

This is one of the most difficult and fundamental concepts of C programming. It took me years of...

Suppose you had "int int_array [12]". Then "int_array [n]" would be an int.

argv is declared as "char *argv []" So "argv [n]" is a "char *".

"char *" is what "printf %s" expects and what makes...

$ sed ":a s/^\(.\{120,125\}\) /\10/; T; ba" input
A 4175.0 8055.01211 75 1 -2172671 77 45 16 457626.4 2609265.1 131.3 1090 102 1 1T N/A124000015 0.8 ...

In that case, I would try using rsync to transfer the files.

Or, you could create a tar file with files / dirs starting with a-m, transfer it, delete it, then make another for those starting with...

There are widely used ways to automatically and securely log into remote systems using public and private keys that are stored in files. It's been a while, so I don't remember the details, but I used...

If you want to reverse a string, here is the best way:
$ echo welcome | rev
emoclew

I think some of your expected output is incorrect. Anyway, try the following.


$ cat test.awk
NR==1 {split ($0, headers); print; next}
{
x=NF; $11=$12="-"
for (i=2; i<x; i++) {
if ($i > 5...

Well, what can you change? The easiest solution is:
run_program in="$IN/${sample}_file1.fa $IN/${sample}_file2.fa"

echo `expr substr $x 1 expr ${#x} - 1`

At least one reason your nested substitution does not work is because you only have one set of `` backticks. Regardless of whether you use the older backtick...

Sure, substr is a function that returns a "substring".

$3 - obviously, that's the field to work on.

0 - starting position. Properly, should have been 1, since awk numbers starting from 1 for...

Reading a non-cached file, on generic Dell OptiPlex 380:
$ time wc -c 2011.bb
4234978 2011.bb

real 0m0.009s
user 0m0.000s
sys 0m0.004s

wc -c file will give the file size in bytes.