Quick question,
File A has one line (10 charachters), File B has one line (10 charachters).
how do a concat these two files together to produce a file (File C) that has the contents of Files A + B together onto one line of 20 Charachters
if I use:
cat FileA FileB > FileC
I get the... (5 Replies)
Hi,
I need to write a shell script that should lists only the files that starts with alphabet from the /proc dir and then I have to cat those files and redirect to a file.
But my below script is not working. It is reading the first file properly but not the subsequent files. Please throw a... (2 Replies)
i have data files in different directories like /jadat
/cadat etcc... i have list of this directories in a file files.
content of files:
ja
ca
directories:
/jadat
/cadat
file in each of these directories
natt_trans_like.dat
i need to loop though each directory for a... (1 Reply)
Hi all,
I have a directory with many subdirectories each named like so: KOG0001, KOG0002, ...KOG9999.
Each of these subdirectories contain a variable number two kinds of files (nuc and prot) named like so: Capitella_sp_nuc_hits.fasta (nuc) and Capitella_sp_prot_hits.fasta (prot). The... (2 Replies)
Hi, sometimes one wants to edit files while still seeing output of earlier commands in terminal. I've found out that cat test && cat - >> test does the trick for displaying file content and adding lines but I believe I saw a much cooler command that was also able to erase lines from files. I cannot... (6 Replies)
I am concatenating txt-files using cat:
cat *.txt > file.dat
However, the same directory has the installation instructions included, which is also a txt file: install.txt
I currently have the install.txt file renamed to install._txt, but I prefer a solution using regular expressions.
Is there... (5 Replies)
Hello,
I am PhD student (Biomedical sciences) and very new to Linux. I need some help with the following task :
I have files in the following format for their names :
An_A1_nnn_R1.txt; An_A1_nnm_R1.txt; An_A1_nnoo_R1.txt
An_A2_nnn_R1.txt; An_A2_nnm_R1.txt; An_A2_nno_R1.txt
... (8 Replies)
I am trying to cat 3 files. They all have the same name MFExtract.txt. But, they are in 3 seperate file names. Any idea how I could cat the 3 together. It's throwing me off figuring out a way because the names are the same. I was thinking just doing a 3 cat commands with the full path names and... (2 Replies)
I am new to Linux and I am trying to cat only N files in a folder. N is dynamically given number at runtime.
If I give N as 2 then cat only 2 files in the folder
and If I give N as 5 then cat only 5 files in the folder.
Is there any way to do that? (6 Replies)
Discussion started by: KMusunuru
6 Replies
LEARN ABOUT PHP
current
CURRENT(3) 1 CURRENT(3)current - Return the current element in an arraySYNOPSIS
mixed current (array &$array)
DESCRIPTION
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array.
PARAMETERS
o $array
- The array.
RETURN VALUES
The current(3) function simply returns the value of the array element that's currently being pointed to by the internal pointer. It does
not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, current(3)
returns FALSE.
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
EXAMPLES
Example #1
Example use of current(3) and friends
<?php
$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport); // $mode = 'bike';
$mode = current($transport); // $mode = 'bike';
$mode = prev($transport); // $mode = 'foot';
$mode = end($transport); // $mode = 'plane';
$mode = current($transport); // $mode = 'plane';
$arr = array();
var_dump(current($arr)); // bool(false)
$arr = array(array());
var_dump(current($arr)); // array(0) { }
?>
NOTES
Note
You won't be able to distinguish the end of an array from a boolean FALSE element. To properly traverse an array which may contain
FALSE elements, see the each(3) function.
SEE ALSO end(3), key(3), each(3), prev(3), reset(3), next(3).
PHP Documentation Group CURRENT(3)