I'm trying to figure out how to do this efficiently with as little execution time as possible and I'm pretty sure using sed is the best way. However I'm new to sed and all the reading and examples I've found don't seem to show a similar exercise:
I have a long text file (i'll call it... (3 Replies)
I have a huge file with 13 million records , how do i split this file into 13 files which has 1 million records in each ( each record is one line)
I tried this but how to print the second million etc
cat file | head -1000000 > file1
cat file | tail -1000000 >file13
please shed some... (1 Reply)
Hello
I have a requirement where i have to split the file into number of files. Lets say i have 200 records and i need to split the file with 50 records each which would be 4 files. If the file has 60 records then first 50 records in first file and then rest of the 10 records in second file. if... (3 Replies)
I have a tab delimitted dataset with 4 fields. I like to split the second field into two, and have 5 fields. I like to remove the "-" sign when I get a new fiel. would you help?
It is like:
1223 100-5 rr dd
I need it like:
1223 100 5 rr dd (2 Replies)
Hello I need help with the following. I have strings like
#if defined(__def1__)
#if defined(__def1__) || defined(__def2__)
#if defined(__def1__) && defined(__def2__) && defined(__def3__).
#if defined(__def1__) || defined(__def2__) || defined(__def3__).
I need to print what is there in... (4 Replies)
Hi experts,
In the lines below I am trying to copy only the words which come after "//" into an array
short nloh; // Comments
int age; // Age of the person
Please help me in achieving this
After the code, the output of the array should
Comments
Age of the person (6 Replies)
I have a file with single line, that line contains just like the following sample
00200100293^30^1^bla bla ...._______To: zabell00200100293^30^3^aSub00200100293^30^4^ellaCc: Sanders,De on my desk__________00200100293^30^4^___________________________________00A00ABC0293^30^1^something___To: some... (10 Replies)
Hello, i want to take a one word from my file.
-- myfile.txt --
test
blablabla
suPHP_ConfigPath /home/performe/etc
blablabla
etc. bla bla.
-- myfile.txt --
How can i take performe from this file ?
Thank you. (7 Replies)
I will simplify the explaination a bit, I need to parse through a 87m file -
I have a single text file in the form of :
<NAME>house........
SOMETEXT
SOMETEXT
SOMETEXT
.
.
.
.
</script>
MORETEXT
MORETEXT
.
.
. (6 Replies)
I want to access query string properties by key using client side laguage like jquery or javascript.
window.location.search will be used but i dont have any idea how i wll be used to get query string parameters.
private URL removed (1 Reply)
Discussion started by: grabbitmedia
1 Replies
LEARN ABOUT CENTOS
string::shellquote
ShellQuote(3) User Contributed Perl Documentation ShellQuote(3)NAME
String::ShellQuote - quote strings for passing through the shell
SYNOPSIS
$string = shell_quote @list;
$string = shell_quote_best_effort @list;
$string = shell_comment_quote $string;
DESCRIPTION
This module contains some functions which are useful for quoting strings which are going to pass through the shell or a shell-like object.
shell_quote [string]...
shell_quote quotes strings so they can be passed through the shell. Each string is quoted so that the shell will pass it along as a
single argument and without further interpretation. If no strings are given an empty string is returned.
If any string can't be safely quoted shell_quote will croak.
shell_quote_best_effort [string]...
This is like shell_quote, excpet if the string can't be safely quoted it does the best it can and returns the result, instead of dying.
shell_comment_quote [string]
shell_comment_quote quotes the string so that it can safely be included in a shell-style comment (the current algorithm is that a sharp
character is placed after any newlines in the string).
This routine might be changed to accept multiple string arguments in the future. I haven't done this yet because I'm not sure if the
strings should be joined with blanks ($") or nothing ($,). Cast your vote today! Be sure to justify your answer.
EXAMPLES
$cmd = 'fuser 2>/dev/null ' . shell_quote @files;
@pids = split ' ', `$cmd`;
print CFG "# Configured by: ",
shell_comment_quote($ENV{LOGNAME}), "
";
BUGS
Only Bourne shell quoting is supported. I'd like to add other shells (particularly cmd.exe), but I'm not familiar with them. It would be
a big help if somebody supplied the details.
AUTHOR
Roderick Schertler <roderick@argon.org>
SEE ALSO perl(1).
perl v5.16.3 2010-06-11 ShellQuote(3)