It seems that grep is a built-in to your shell. There's no way otherwise that it would know that the file to search was also the target of redirection.
I was thinking about this as well, but -
- it's a file in /bin and not a built-in. It must be using functionality like lsof to determineits own open files in the target directory?!
I could reproduce what you posted by adding a pipe to cat; now the output file contains what you post, i.e. one line referring to itself.
I still wonder why nanthagopal's disk fills up, though ...
Hi, I'm trying to output all text from the first paragraph in a file that contains a specific string through the last paragraph in that file that contains that string.
Previously, I was outputting just each paragraph with that search string with:
cat in_file | nawk '{RS=""; FS="\n";... (2 Replies)
Hi,
So I'm kinda new to shell scripts and the like. I've picked up quite a bit of use from browsing the forums here but ran into a new one that I can't seem to find an answer for.
I'm looking to parse/find a string AND the next 15 or so charachters that follow the string within a text file... (1 Reply)
hi, i'm new to shell scripting.
I have a text file(sample.txt). It contains the different username & password for different users of oracle db.
.txt content
user1|password1
user2|password2
user3|password3
user4|password4
First read the text file and take the username and password then... (5 Replies)
Hi ,
I have a simple text file with contents as below:
12345678900 971,76 4234560890
22345678900 5971,72 5234560990
32345678900 71,12 6234560190
the new csv-file should be like:
Column1;Column2;Column3;Column4;Column5
123456;78900;971,76;423456;0890... (9 Replies)
I am having a text file which is having more than 200 lines.
EX:
001010122 12000 BIB 12000 11200 1200003
001010122 2000 AND 12000 11200 1200003
001010122 12000 KVB 12000 11200 1200003
In the above file i want to search for string KVB and add/replace... (1 Reply)
Dear All
I am having a text file which is having more than 200 lines.
EX:
001010122 12000 BIB 12000 11200 1200003
001010122 2000 AND 12000 11200 1200003
001010122 12000 KVB 12000 11200 1200003
In the above file i want to search for string KVB... (5 Replies)
Hi guys,
I have a text file named file1.txt that is formatted like this:
001 , ID , 20000
002 , Name , Brandon
003 , Phone_Number , 616-234-1999
004 , SSNumber , 234-23-234
005 , Model , Toyota
007 , Engine ,V8
008 , GPS , OFF
and I have file2.txt formatted like this:
... (2 Replies)
I want to search a small string in a large string and find the locations of the string. For this I used grep "string" -ob <file name where the large string is stored>. Now this gives me the locations of that string. Now how do I store these locations in a text file.
Please use CODE tags as... (7 Replies)
please help to write a awk command-line programs to achieve the following functions: Thank in advance.
Requeset Description:
compare two files f1 and f2, export to file f3:
1 Delete duplicate rows of in file f1 and file f2
2 If the 1th column of file f1 and file f2 is the same, then export... (1 Reply)
Discussion started by: weichanghe2000
1 Replies
LEARN ABOUT LINUX
xzegrep
XZGREP(1) XZ Utils XZGREP(1)NAME
xzgrep - search compressed files for a regular expression
SYNOPSIS
xzgrep [grep_options] [-e] pattern file...
xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...
DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options
specified are passed directly to grep(1).
If no file is specified, then standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1)
and bzip2(1) compressed files are not supported.
If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze-
grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.
ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).
SEE ALSO grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)Tukaani 2010-09-27 XZGREP(1)