10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a file where every line includes four expressions with a caret in the middle (plus some other "words" or fields, always separated by spaces). I would like to extract from this file, all those lines such that each of the four expressions containing a caret appears in at least four different... (9 Replies)
Discussion started by: uncleMonty
9 Replies
2. Shell Programming and Scripting
HI,
I have 2 text files. file1 and file2.
file1.txt (There are no duplicates in this file)
1234
3232
4343
3435
6564
6767
1213
file2.txt
1234,wq,wewe,qwqw
1234,as,dfdf,dfdf
4343,asas,sdds,dsds
6767,asas,fdfd,fdffd
I need to search each number in file1.txt in file2.txt's 1st... (6 Replies)
Discussion started by: Little
6 Replies
3. Shell Programming and Scripting
I have a bunch of file numbers in the file 'test':
I'm trying the above command to change all the instances of "H" to "Na+" in the file testsds.pdb at the line numbers indicated in the file 'test'. I've tried the following and various similar alternatives but nothing is working:
cat test |... (3 Replies)
Discussion started by: crunchgargoyle
3 Replies
4. UNIX for Dummies Questions & Answers
Hello All,
this is my first post so I don't know if I am doing this right.
I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file.
As an example:
- the file that contains the values to be... (3 Replies)
Discussion started by: gus74
3 Replies
5. Shell Programming and Scripting
I really can't figure this one out.
I have 2 files, one file is a list of hostnames and the other is a list of their corresponding IPs:
fileA:
example.com
another.org
thirdie.net
fileB:
1.1.1.1
2.2.2.2
3.3.3.3
I want to create a fileC that looks like:
example.com 1.1.1.1... (2 Replies)
Discussion started by: zstar
2 Replies
6. Shell Programming and Scripting
I have a file that looks like this:
cat includes
CORP-CRASHTEST-BU
e:\crashplan\
CORP-TEST
/usr/openv/java
/usr/openv/logs
/usr/openv/man
CORP-LABS_TEST
/usr/openv/java
/usr/openv/logs
/usr/openv/man
What I want to do is make three new files with just those selections. So the three... (4 Replies)
Discussion started by: newbie2010
4 Replies
7. Shell Programming and Scripting
I have a configuration file that contains hundreds of these chunks. Each "chunk" is the section that begins with "define service {" and ends with "}".
define service {
check_command check_proc!java
hostgroup_name
service_description ... (5 Replies)
Discussion started by: SkySmart
5 Replies
8. Shell Programming and Scripting
hi,
i have two files.
file1.sh
echo "unix"
echo "linux"
file2.sh
echo "unix linux forums"
now the output i need is
$./file2.sh
unix linux forums (3 Replies)
Discussion started by: snreddy_gopu
3 Replies
9. Shell Programming and Scripting
Hi,
I have two files. 1st file has 1 column (huge file containing ~19200000 lines) and 2nd file has 2 columns (small file containing ~6000 lines).
#################################
huge_file.txt
a
a
ab
b
##################################
small_file.txt
a 1.5
b 2.5
ab ... (4 Replies)
Discussion started by: AshwaniSharma09
4 Replies
10. Shell Programming and Scripting
I need help to parse a file where there are many records, all of which are consistently separated by lines containing “^=============” and "^ End of Report".
Example:
=============
1
2
3
4
End of record
=============
1
3
4
End of record
Etc....
I only need specific lines... (5 Replies)
Discussion started by: jouuu
5 Replies
unifdef(1) General Commands Manual unifdef(1)
NAME
unifdef - remove preprocessor lines
SYNOPSIS
sym] sym] sym] sym]] ... [file]
DESCRIPTION
simulates some of the actions of in interpreting C language preprocessor command lines (see cpp(1)). For a valid preprocessor command line
contains as its first character a and one of the following keywords: or The character and its associated keyword must appear on the same
line, but they can be separated by spaces, tabs, and commented text. When appropriate, the portions of code surrounded by and including
the targeted preprocessor directives are removed, and the resultant text is written to the standard output.
Unlike does not insert included files, interpret macros, or strip comment lines. This means, among other things, that and macros occurring
within the input text are not interpreted.
Since is language-independent, it can be used for processing source files for languages other than the C language. For example, can be
used on FORTRAN language source files, provided the C language preprocessor commands are used.
Options
recognizes the following command-line options:
Complement the normal behavior by printing only the rejected lines.
Ignore text delimited by
sym. In other words, text that would otherwise be affected by some action is not touched when found within the context
of a preprocessor command using sym.
Ignore text delimited by
sym.
Replace rejected lines with blank lines
in the text written to the standard output.
Treat the input source as plain text.
C-language comment and quoting constructs are not recognized.
Define symbol
sym.
Cause symbol
sym to be undefined.
RETURN VALUE
The command returns the following exit values:
0 Output is an exact copy of the input.
1 Output is not an exact copy of the input.
2 The command fails. The failure might be due to a premature EOF or to an inappropriate or
EXAMPLES
Assume file contains the following:
The command sequence:
produces the following result in file
WARNINGS
Any symbol name defined in the file must be specified in the command line; otherwise, will ignore the line.
AUTHOR
was developed in the public domain.
SEE ALSO
cpp(1).
unifdef(1)