Sponsored Content
Full Discussion: UNIX Special files
Top Forums UNIX for Dummies Questions & Answers UNIX Special files Post 302488876 by Madrid 7 on Tuesday 18th of January 2011 04:16:29 PM
Old 01-18-2011
UNIX Special files

Hi, I'm looking for information about UNIX Special Files. I must write an essay connected with this topic, and I hope you'll tell me where can I found trusty information about it, because Google doesn't really help me. I'll be grateful for answer.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Unix file does not display special characters

We have a unix file that contains special characters (ie. Ñ, °, É, ¿ , £ , ø ). When I try to read this file I get a codepage error and the characters are replaced by the # symbol. How do I keep the special characters from being read? Thanks. Ryan (3 Replies)
Discussion started by: Ryan2786
3 Replies

2. UNIX for Dummies Questions & Answers

rename more files special case

hello all i have a big problems for me if i have more files as example test.ghrt.part01.rar test.ghrt.part02.rar test.ghrt.part03.rar test.ghrt.part04.rar test.ghrt.part05.rar test.ghrt.part06.rar test.ghrt.part07.rar test.ghrt.part08.rar test.ghrt.part09.rar test.ghrt.part10.rar... (13 Replies)
Discussion started by: ateya
13 Replies

3. Shell Programming and Scripting

Unix Perl split special character $

All I'm trying to split a string at the $ into arrays @data:=<dataFile> a $3.33 b $4.44 dfg $0.56 The split command I have been playing with is: split(/\$/, @data) which results with a .33 b .44 dfg .56 any help with this is appreciated /r Rick (9 Replies)
Discussion started by: schultz2146
9 Replies

4. Shell Programming and Scripting

pattern matching on any special character in Unix

Hi, I have field in a file which would come with any special character, how do i check that field? Eg: @123TYtaasa>>>/ 131dfetr_~2 In the above example, how do I add pattern for any special character on the keyboard. Thanks (3 Replies)
Discussion started by: techmoris
3 Replies

5. UNIX for Dummies Questions & Answers

Find in Files (special characters)

Well, I've searched the forum, but couldn't find an option, that would help me. I'm really a dummie in unix, so here it goes. I've got like 50k files in a single catalogue. One of them contains a string: Including the box/square brackets. I tried to find it manually, and use some search... (2 Replies)
Discussion started by: kalik
2 Replies

6. Shell Programming and Scripting

Special Merge of two files

I have two files, foo1 and foo2. I would like to merge them into file named foo3 such that field 1,2,3,4,5,ect of foo1 are fields 1,3,5,7,9,ect of foo3, and fields field 1,2,3,4,5,ect of foo2 are fields 2,4,6,8,10,ect of foo3. Foo1 and Foo2 are the same size of 800 fields and 20K lines. eg... (6 Replies)
Discussion started by: peanuts48
6 Replies

7. Shell Programming and Scripting

Windows to UNIX FTP Special characters!

I have a file that has the name in one of the lines as MARíA MENDOZA in Windows. When this gets FTPed over to UNIX it appears as MAR�A MENDOZA. Is there anyway to overcome this? Its causing a issue because the file is Postional and fields are getting pushed by 2 digits.. Any help would be... (4 Replies)
Discussion started by: venky338
4 Replies

8. Shell Programming and Scripting

UNIX Special Characters

Any time I do : ls *.txt > mytext.txt I get something like this in the output file: ^ Tue Jan 22 16:19:19 EST 2013 x86_64 x86_64 x86_64 GNU/Linux t1Fam_BrOv :~>alias | grep ls alias l.='ls -d .* --color=tty' alias lR='ls -R' alias la='ls -Al' alias lc='ls -ltcr' alias ldd='ls -ltr |... (5 Replies)
Discussion started by: genehunter
5 Replies

9. Shell Programming and Scripting

Special IF construct syntax in UNIX

Hi, I don't understand && and || in this context. I thought && is for logical 'AND' and || is for logical 'OR'. && echo "Not empty" || echo "Empty" Please help Thank You (5 Replies)
Discussion started by: TomG
5 Replies

10. UNIX for Beginners Questions & Answers

How To Retreive Files With a Special Condition?

Everyday I have to get a list of files in a directory with a special condition and feed this list to a for loop to be processed. Since I do not use Unix all the time, it is tricky for me to get that list of files. So, the question is whether there are commands that will give me the file names... (12 Replies)
Discussion started by: april
12 Replies
cp(1)							      General Commands Manual							     cp(1)

NAME
cp - Copies files SYNOPSIS
cp [-fhip] [--] source_file destination_file cp [-fhip] [--] source_file... destination_directory cp [-fhip] [-r | -R] [--] [source_file | source_directory]... destination_directory The cp command copies a source file or the files in a source directory to a destination file or directory. If your source and destination are directories, the source is copied to the destination and created with the same name. STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: cp: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
[Tru64 UNIX] The cp command does not prompt you when an existing file is to be overwritten. (If both -f and -i are specified on the com- mand line--for example, because an alias includes one of them--whichever appears last overrides the other.) [Tru64 UNIX] Together with the -R option, the same as the -r option. Prompts you with the name of the file whenever the copy would cause an existing file to be over- written. An answer beginning with y, or the locale's equivalent of y, causes cp to continue. Any other answer prevents it from overwriting the file. Preserves for the copy the modification time, access time, file mode, user ID, and group ID of the original, as allowed by per- missions. If the user ID and group ID cannot be preserved, no error message is displayed and the exit value is not altered. If the origi- nal is set-user-ID or set-group-ID, and either the user ID or the group ID cannot be preserved, the set-user-ID and set-group-ID bits are not preserved in the copy's permissions. [Tru64 UNIX] Preserves the extended file attributes (property list), including the access control list (ACL) if any. When the source is a directory, copies the directory and the entire subtree connected at that point. Special file types, such as symbolic links, named pipes (FIFOs), and block and character devices, are opened and their contents are copied to regular files having the same name. (This may be desired for links but is probably not desired for disk, tape, or network devices.) For example, if a is a symbolic link to file z and a is copied to b with the -r option, b is not a symbolic link to file z but is a copy of it. As with -r, when the source is a directory, copies the directory and the entire subtree connected at that point. However, destination_files are created with the same file types as source_files, for instance symbolic links, named pipes (FIFOs), or block or character devices. As an example, if a is a symbolic link to file z and a is copied to b with the -R option, b will also be a symbolic link to file z. If source_file is a FIFO, the file permission bits of destination_file are set to those of source_file modified by the file creation mask of the user if the -p option is not used. Indicates that the arguments following this option are to be interpreted as file names. This null option allows the specification of file names that start with a minus. DESCRIPTION
If a destination file already exists, its contents are overwritten if permissions allow, but cp does not change its mode, user ID, or group ID. However, if the file is not being copied by the root user, writing the file may clear the set-user-ID or set-group-ID permission bits. If the destination file does not exist, the mode of the source file is used, as modified by the file mode creation mask (umask). If the source file is either set-user-ID or set-group-ID, those bits are removed unless the -p option is used. Appropriate permissions are always required for file creation or overwriting. [Tru64 UNIX] You can also copy special device files. If the file is a named pipe, the data in the pipe is copied into a regular file. If the file is a device, the file is read until the end of file, and that data is copied into a regular file. The LC_MESSAGES variable determines the locale's equivalent of y or n (for yes/no queries). If the source_file is a directory, the following is true: If neither the -R or -r option was specified, an error message is displayed and source_file is not copied. If the target specified exists and is a file, not a directory, an error message is displayed and source_file is not copied. If the target does not exist and the -p option is specified, the permission bits of the target directory are set equal to the source directory bitwise inclusively ORed with S_IRWXU (0700 octal). This means the newly created directory will always allow the owner read, write and execute permission. If the target does not exist and the -p option is not specified, the permission bits of the target directory are set equal to the source directory bits, modified by the file creation mask of the user (shuts off the corresponding permis- sion bits specified in the umask). The resulting permission bits are then ORed with S_IRWXU (0700 octal) which gives the owner read, write and execute permission. If the target does not exist and cannot be created, an error message is displayed and source_file is not copied. NOTES
Do not give the destination the same name as one of the source files. If you specify a directory as the destination, the directory must already exist. If you are using the -r option to copy the contents of one directory to another, and source_directory contains subdirecto- ries that do not exist in destination_directory, the subdirectories are created. EXIT STATUS
The following exit values are returned: Successful completion. An error occurred. EXAMPLES
To copy one file to another, enter: cp file1 file2 If file2 exists (and is writable), it is replaced by file1. To copy files to a directory, enter: cp file1 file2 dir1 The dir1 directory must exist. To copy all files in a directory and preserve their modification times, enter: cp -p dir1/* dir2 To copy a directory tree to another directory, enter: cp -r dir1 dir2 The dir1 tree is created in dir2. ENVIRONMENT VARIABLES
The following environment variables affect the execution of cp: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization vari- ables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments). Determines the locale for the for- mat and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES. SEE ALSO
Commands: cpio(1), find(1), link(1), ln(1), mv(1), pax(1), tar(1), umask(1) Functions: umask(2) Files: proplist(4), acl(4) Standards: standards(5) cp(1)
All times are GMT -4. The time now is 02:06 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy