I tried to make the title/subject detailed, but well.. have to keep it short as well.
I am wanting to take a large list of strings, and search through a large list of files to hopefully find numerous matches. I am not sure the quickest way to do this though.
Code:
// List of files
file1.txt
file2.txt
file3.txt
file4.txt
file5.txt
file6.txt
file7.txt
// Searches
testtag
strings
more stuff
lots of stuff here
So basically take all of the strings under // Searches, and search through the files listed above it. I could imagine that the script may go something like this..
Code:
find . -type f -size -100k | xargs egrep -il "(testtag|strings|more stuff|lots of stuff here)"
While I know that will work, I would like to find a more efficient way of doing it. Any help would be greatly appreciated
I need to search a very large file. 13g in size. i am looking for a record that has a value in the byte 4200 . how can i view the file or how can i search for value in the byte 4200? (1 Reply)
Hi all,
I have a file entries.txt that contains a number of entries all on seperate lines e.g.
test1
test2
test3
test4
Then in a directory called /TestFiles I have a number of files that could contain the above text in the file name
e.g. qwertytest1.csv qwertytest2.csv... (2 Replies)
Hey All
Can any one please suggest the procedure to search a part of line in a very large file in which log entries are entered with very high speed.
i have trued with grep and egrep
grep 'text text text' <file-name>
egrep 'text text text' <file-name>
here 'text text text' is... (4 Replies)
Hi.,
In my script I have written :
file_list=`ls -lrt /tmp/vinay/act/files |grep "$cdate"| awk '{print $9}'`
To store list of files in the directory. Now I want to access it as list. And for this I tried with :
set -A filearray $file_list
if }` == "" ]]; then
... (1 Reply)
Hi All,
I need help to know the exact command when I grep large list of files. Either using ls or find command. However I do not want to find in the subdirectories as the number of subdirectories are not fixed. How do I achieve that.
I want something like this:
find ./ -name "MYFILE*.txt"... (2 Replies)
Hello,
I am searching large (~25gb) DNA sequence data in fasta short read format:
>ReadName
ACGTACGTACGT...
for short tandem repeats, meaning instances of any 2-6 character based run that are repeated in tandem a number of times given as an input variable. Seems like a reasonably simple... (3 Replies)
There are two parts to this. In the first part I need to read a list of files from a directory and split it into 4 arrays. I have done that with the following code,
# collect list of file names
STATS_INPUT_FILENAMES=($(ls './'$SET'/'$FOLD'/'*'in.txt'))
# get number of files... (8 Replies)
hello,
i need a bit of help on how to do this effectively in bash without a lot of extra looping or massive switch/case
i have a long array of M elements and a short array of N elements, so M > N always. M is not a multiple of N.
for case 1, I want to stretch N to fit M
arrayHuge
H = (... (2 Replies)
Discussion started by: f77hack
2 Replies
LEARN ABOUT REDHAT
mac2unix
dos2unix(1) General Commands Manual dos2unix(1)NAME
dos2unix - DOS/MAC to UNIX text file format converter
SYNOPSYS
dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]
Options:
[-hkqV] [--help] [--keepdate] [--quiet] [--version]
DESCRIPTION
This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.
OPTIONS
The following options are available:
-h --help
Print online help.
-k --keepdate
Keep the date stamp of output file same as input file.
-q --quiet
Quiet mode. Suppress all warning and messages.
-V --version
Prints version information.
-c --convmode convmode
Sets conversion mode. Simulates dos2unix under SunOS.
-o --oldfile file ...
Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.
-n --newfile infile outfile ...
New file mode. Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
used or you WILL lost your files.
EXAMPLES
Get input from stdin and write output to stdout.
dos2unix
Convert and replace a.txt. Convert and replace b.txt.
dos2unix a.txt b.txt
dos2unix -o a.txt b.txt
Convert and replace a.txt in ASCII conversion mode. Convert and replace b.txt in ISO conversion mode. Convert c.txt from Mac to Unix
ascii format.
dos2unix a.txt -c iso b.txt
dos2unix -c ascii a.txt -c iso b.txt
dos2unix -c mac a.txt b.txt
Convert and replace a.txt while keeping original date stamp.
dos2unix -k a.txt
dos2unix -k -o a.txt
Convert a.txt and write to e.txt.
dos2unix -n a.txt e.txt
Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.
dos2unix -k -n a.txt e.txt
Convert and replace a.txt. Convert b.txt and write to e.txt.
dos2unix a.txt -n b.txt e.txt
dos2unix -o a.txt -n b.txt e.txt
Convert c.txt and write to e.txt. Convert and replace a.txt. Convert and replace b.txt. Convert d.txt and write to f.txt.
dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt
DIAGNOSTICS BUGS
The program does not work properly under MSDOS in stdio processing mode. If you know why is that so, please tell me.
AUTHORS
Benjamin Lin - <blin@socs.uts.edu.au>
Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org>
MISCELLANY
Tested environment:
Linux 1.2.0 with GNU C 2.5.8
SunOS 4.1.3 with GNU C 2.6.3
MS-DOS 6.20 with Borland C++ 4.02
Suggestions and bug reports are welcome.
SEE ALSO unix2dos(1)mac2unix(1)1995.03.31 dos2unix v3.0 dos2unix(1)
01-21-2009
