Hi All,
I'm new to perl,
My requirement is to check if particular file exists.
e.g. filename.txt, filename1.txt, filename2.txt etc
I tried the below code:-
my $var1 = "filename.txt"
if ( -e ($var1 = ~ /file\w/))
{
print "File found \n";
}
else
{ print "File not found \n";
}
... (0 Replies)
Hi,
I have large files with fixed length fields or fields seperated by delimeter. I would like to do validation on some or all fields to check for numeric or date or characters etc.. I would like to write this in C++. Please let me know if any one have any ideas on this.
Thanks for all... (2 Replies)
I have the following:
HH:MM:SS
I want to use either % or # sign to remove :SS can somebody please provide me an example. I know how to do this in awk, but awk is too much
overhead for something this simple since I will be doing this in a loop a lot of times.
Thanks in advance to all... (2 Replies)
Hi All,
Following is the program that i have written in cygwin. The redirection of the unfound $param1 to error.txt file doesnt work.Can any one help?
#!/usr/bin/sh
fname=$1
sed 's/ //g' "$fname" > fname1
while read i
do
echo $i > file1
#param1 is script name
... (1 Reply)
I have a huge file that has roughly 30304 lines. I need to extract specific info from that file. For example,
Box 1 > *aaaaaaaajjjj*
> hbbvjvj
> jdnnfddllll
> *dgdfhfekwjh*
Box 2 > *aaaaaaa'aj'jjj*
> dse hkjuejef bfdw
> dyeee
> dsewq
> *dgdfhfekwjh*
>feweiuei
Box 3 > *aaaa"aaaaj"jjj*
>... (25 Replies)
Hello,
I have a file ( say file1) which has lines like below.
xxxx:xxxx,yyyy,1234,efgh
zzzz:zzzz,kkkk,pppp,1234,xxxx,uuuu,oooo
dddd:dddd
here the word before ":" ( ie: xxxx) is the file name and the string after : are also file names, but each file name separated by ","
In case of... (20 Replies)
Hi all,
I have 7 words
CAD
CD
HT
RA
T1D
T2D
BD
Now I have 1 file which contain data in large number of rows and columns
from 2 nd column onwards it contain any of these 7 words or may be more than one words among above 7 words:
these 7 names are present in starting from 2nd ... (7 Replies)
Hi
I need to do a patten match between files .
I am new to shell scripting and have come up with this so far. It take 50 seconds to process files of 2mb size . I need to tune this code as file size will be around 50mb and need to save time.
Main issue is that I need to search the pattern from... (2 Replies)
HI ,
I WANT TO RETRIVE IN BETWEEN DATA FROM PARENTHESIS AND I AM GETTING ERRORS WHILE RUN THE AWK.I HAVE 2 FILES AND WANT TO PROCESS 1ST FILE PATTERN TO 2ND FILE AND WRITES INTO OUTPUT FILE.THIS TIME I AM PUTTING WHERE EXACTLY I AM GETTING ERRORS.SO PLEASE HELP.
PATTERN_FILE.TXT
--------------... (1 Reply)
Discussion started by: andrew_11
1 Replies
LEARN ABOUT BSD
mtools
MTOOLS(1) General Commands Manual MTOOLS(1)NAME
Mtools - a collection of tools for manipulating MSDOS files
SYNOPSIS
mattrib - change MSDOS file attribute flags
mcd - change MSDOS directory
mcopy - copy MSDOS files to/from Unix
mdel - delete an MSDOS file
mdir - display an MSDOS directory
mformat - add an MSDOS filesystem to a low-level formatted diskette
mlabel - make an MSDOS volume label
mmd - make an MSDOS subdirectory
mrd - remove an MSDOS subdirectory
mread - low level read (copy) an MSDOS file to Unix
mren - rename an existing MSDOS file
mtype - display contents of an MSDOS file
mwrite - low level write (copy) a Unix file to MSDOS
DESCRIPTION
Mtools is a public domain collection of programs to allow Unix systems to read, write, and manipulate files on an MSDOS filesystem (typi-
cally a diskette). Each program attempts to emulate the MSDOS equivalent command as closely as practical.
MSDOS filenames are optionally composed of a drive letter followed by a colon, a subdirectory, and a filename. Subdirectory names can use
either the '/' or '' separator. The use of the '' separator or wildcards will require the names to be enclosed in quotes to protect them
from the shell.
The regular expression "pattern matching" routines follow the Unix-style rules. For example, '*' matches all MSDOS files in lieu of '*.*'.
The archive, hidden, read-only and system attribute bits are ignored during pattern matching.
All options use the '-' (minus) flag, not '/' as you'd expect in MSDOS.
The mcd command is used to establish the device and the current working directory (relative to the MSDOS filesystem), otherwise the default
is assumed to be A:/.
SEE ALSO mattrib(1), mcd(1), mdel(1), mformat(1), mrd(1), mren(1), mtype(1), mcopy(1), mdir(1), mlabel(1), mmd(1), mread(1), mwrite(1)BUGS
An unfortunate side effect of not guessing the proper device (when multiple disk capacities are supported) is an occasional error message
from the device driver. These can be safely ignored.
local MTOOLS(1)