Attach filename to wc results on massive number of files
Hello,
I have massive number of big files that needed to be counted for the total number of lines (> 100x millions) each. I want the file name attached to the count results so that they are aligned nicely matching name and counts.
I could do each file at a time, which will take hours to finish, so that the jobs were sent to background as I have multiple cores available to get the job done quickly. The problem with my script is the "echo -n $f" "; always accomplishes first, and the ${f}_R1.fq.gz | wc -l part is behind too much and the result was not aligned as expected.
Here is my code:
How should I improve my script to get what is expected? Thanks a lot!
I am searching some rather large text files using grep and or awk.
What I would like to know is if there is a way (either with grep, awk, or realy any other unix tool) to stop the search when a predifined number of results are returned.
I would like to do this for speed purpuses. When i get... (6 Replies)
Hello All,
I am maintaining a server and I use pine as MUA and sendmail as MTA. Suddenly many users in the network face the problem of not being able to attach files using pine. I checked the sendmail.cf file and found a variable "MaxMessageSize = 1000000". Eventhough the message size... (2 Replies)
if test.dat is the file
cat test.dat|uuencode test.dat|mailx -s "subject" mailid
can be used for attaching test.dat
how can i attach more than one file to a mail using mailx (2 Replies)
Hi all,
I have a list of xml file. I need to split the files to a different files when see the <ko> tag.
The list of filename are
B20090908.1100-20090908.1200_CDMA=1,NO=2,SITE=3.xml
B20090908.1200-20090908.1300_CDMA=1,NO=2,SITE=3.xml
B20090908.1300-20090908.1400_CDMA=1,NO=2,SITE=3.xml
... (3 Replies)
Hi,
My script has to send 2 files as a separate attachment(Note : files to be sent without zipping) to the specified email id.
Below code was used but it is not attaching the file as expected instead the file contents are displayed in the body of the email.
Kindly,help with your... (22 Replies)
Hi, I have 7 terabytes of tar files, one for every single day since 1980. Inside these tar files are GRIB files, each with 100+ variables. There's 8 GRIBs in each tar, corresponding to different times of the day. I need 6 friggin variables..., and it takes TWO WEEKS TO EXTRACT ALL THE TAR FILES... (3 Replies)
I am trying to display the output of ls and also print the number of characters in EVERY file name. This is what I have so far:
#!/bin/sh
for x in `ls`; do
echo The number of characters in x | wc -m
done
Any help appreciated (1 Reply)
Hi guys,
I'm struggling with this one, any help is appreciated.
I have File1 with hundreds of unique words, like this:
word1
word2
word3
I want to count each word from file1 in file2 and return how many times each word is found.
I tried something like this:
for i in $(cat file1); do... (13 Replies)
Hi all,
I have 20 files (file001.txt upto file020.txt) and I want to read them from 3rd line upto end of file (line 1002). But in the final file they should appear to start from line 1.
I need following kind of output in a single file:
Filename Line number 2ndcolumn 4thcolumn
I... (14 Replies)
Discussion started by: bioinfo
14 Replies
LEARN ABOUT PHP
file_exists
FILE_EXISTS(3) 1 FILE_EXISTS(3)file_exists - Checks whether a file or directory existsSYNOPSIS
bool file_exists (string $filename)
DESCRIPTION
Checks whether a file or directory exists.
PARAMETERS
o $filename
- Path to the file or directory. On windows, use //computername/share/filename or \computernamesharefilename to check files on
network shares.
RETURN VALUES
Returns TRUE if the file or directory specified by $filename exists; FALSE otherwise.
Note
This function will return FALSE for symlinks pointing to non-existing files.
Warning
This function returns FALSE for files inaccessible due to safe mode restrictions. However these files still can be included if they
are located in safe_mode_include_dir.
Note
The check is done using the real UID/GID instead of the effective one.
Note
Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results
for files which are larger than 2GB.
EXAMPLES
Example #1
Testing whether a file exists
<?php
$filename = '/path/to/foo.txt';
if (file_exists($filename)) {
echo "The file $filename exists";
} else {
echo "The file $filename does not exist";
}
?>
ERRORS /EXCEPTIONS
Upon failure, an E_WARNING is emitted.
NOTES
Note
The results of this function are cached. See clearstatcache(3) for more details.
Tip
As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
which wrappers support stat(3) family of functionality.
SEE ALSO is_readable(3), is_writable(3), is_file(3), file(3).
PHP Documentation Group FILE_EXISTS(3)