10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Gurus
I am running an AIX 7.1 system and have come across a strange issue.
I am trying to delete files from a folder using standard 'rm' syntax. After i delete the files , files re-appear again.
File renaming or editing does not help. Files re-appear with 0 bytes again. They are always 0... (5 Replies)
Discussion started by: abhijeet
5 Replies
2. Linux
hi i know this is irrelevant to the question above but i was wondering how to pt a restriction in the filename in linux. I want that it is impossible to add numbers into the filename, help will be rely great , thanx!
This posting was initially given as a reply to an unrelated thread. It has been... (2 Replies)
Discussion started by: samirboss
2 Replies
3. UNIX for Dummies Questions & Answers
I have a text file with 1000 lines, I want to randomly select 200 lines from it and print them as output. How do I go about doing that? Thanks! (7 Replies)
Discussion started by: evelibertine
7 Replies
4. Shell Programming and Scripting
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Discussion started by: ijustneeda
11 Replies
5. Shell Programming and Scripting
What I have are two text files that I need to shuffle randomly, but I need the two files to be randomly shuffled the same way. I have heard of shuf but I do not know how to use it for two files. Maybe there is also an easy/simple awk command I do not know about that could handle this problem.
... (3 Replies)
Discussion started by: adrunknarwhal
3 Replies
6. UNIX for Dummies Questions & Answers
HI guys,
Could you help me writing a simple version control script for a text files.
the format could be
./version_control <file(s)> (I want it to be able to work with more than 1 file at the same time)
commands are add and get, add means you add new file(s) to the archive, get means you... (4 Replies)
Discussion started by: s3270226
4 Replies
7. Solaris
I have a netscape 4.79 browser for our GUI which connects to a Solaris5.8 box. During peek hours, we see question marks appearing in the screen instead of the text we enter. This results in query failure. This problem does not happen always, and is quite irritating because, we have to close the... (6 Replies)
Discussion started by: vanz
6 Replies
8. UNIX for Dummies Questions & Answers
I have a directory of files that look like filename 001.ext, filename 002.ext, etc. I'd like to rename the files with unique random numbered names, so that the original filenames are stripped and the files are given a new, random number name. I'm not super new to UNIX, but I don't often use it for... (2 Replies)
Discussion started by: platz
2 Replies
9. Shell Programming and Scripting
Can anyone seem to know how to find out whether a UNIX text file has 'hidden' control characters?
Can I view them using 'vi' by some command line options?
If there are control characters in a text file which are invisible/hidden.. then how do I get rid of them?
Your intelletual answers are... (6 Replies)
Discussion started by: kewl_guy
6 Replies
10. Shell Programming and Scripting
Hi ,
I have special character control M in many of my files as below
ersNet-Telnet-3.03/Makefile.PL100644 21166 144 612 7113770214 135
77 0ustar jayusers## -*- Perl -*-^M
^M
use ExtUtils::MakeMaker qw(WriteMakefile);^M
^M
WriteMakefile(NAME => "Net::Telnet",^M
... (4 Replies)
Discussion started by: Mohammed
4 Replies
CTYPE_CNTRL(3) 1 CTYPE_CNTRL(3)
ctype_cntrl - Check for control character(s)
SYNOPSIS
bool ctype_cntrl (string $text)
DESCRIPTION
Checks if all of the characters in the provided string, $text, are control characters. Control characters are e.g. line feed, tab, escape.
PARAMETERS
o $text
- The tested string.
RETURN VALUES
Returns TRUE if every character in $text is a control character from the current locale, FALSE otherwise.
EXAMPLES
Example #1
A ctype_cntrl(3) example
<?php
$strings = array('string1' => "
", 'string2' => 'arf12');
foreach ($strings as $name => $testcase) {
if (ctype_cntrl($testcase)) {
echo "The string '$name' consists of all control characters.
";
} else {
echo "The string '$name' does not consist of all control characters.
";
}
}
?>
The above example will output:
The string 'string1' consists of all control characters.
The string 'string2' does not consist of all control characters.
NOTES
Note
If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative val-
ues have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string contain-
ing the decimal digits of the integer.
SEE ALSO
ctype_print(3).
PHP Documentation Group CTYPE_CNTRL(3)