Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Copy command
Top Forums UNIX for Dummies Questions & Answers Copy command Post 302965002 by Raj999 on Friday 22nd of January 2016 01:12:18 AM
Old 01-22-2016
Copy command
Hi ,

I am trying to take a backup of file before overwriting it with cp command, I am using the command cp -b.

Code:
-rw-rw-r-- 1 autoengine murex    0 Jan 22 07:08 a
-rw-rw-r-- 1 autoengine murex    0 Jan 22 07:08 b

cp -b a b

-rw-rw-r-- 1 autoengine murex    0 Jan 22 07:08 a
-rw-rw-r-- 1 autoengine murex    0 Jan 22 07:08 b~
-rw-rw-r-- 1 autoengine murex 3518 Jan 22 07:08 script.log
-rw-rw-r-- 1 autoengine murex    0 Jan 22 07:09 b

I want the b~ file to be created as b.bk.
Can you let me know how to achieve this ?
And is there any similar method using vi, which will take a backup of a file before saving the modifications.

Thanks
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

copy command

what command would i wrote to copy files from $folder1 to $folder2 ???? (1 Reply)
Discussion started by: perleo
1 Replies

2. Linux

copy command

sir can any body tell me how i can copy files like copy c:\abc\pqr\mr.txt c:\windows\my documents\this.txt i need command in linux like this really i am a new in linux that is why simple questions alson can any body explain me how i get current directory tree or path in windows... (2 Replies)
Discussion started by: sadiquep
2 Replies

3. Shell Programming and Scripting

Need help in Copy Command

i need to copy some files from a directory and move the copy files to some destination with the extension .dat Can any one help on this (5 Replies)
Discussion started by: ranga27
5 Replies

4. Shell Programming and Scripting

Unix copy command

Hi, I have the below command running in unix find /dev/data/ -name "*.*" -exec cp -R {} "/isdev/data//history" \; This command will copy the files from /dev/data/ to /isdev/data//history and will not throw even if there is no files in source. But if i modify the path from... (6 Replies)
Discussion started by: redd
6 Replies

5. UNIX for Dummies Questions & Answers

Copy file command, why?, how?

scp /path/to/file <username>@<Other Server>:/path/to/newfile If my file is named "Bob" and it is in my user "Accountant" and in a directory named "Invoice_folder"... How would this look in the above? I can't seem to understand the logic of the above scp. MOVING FILE FROM LOCATION #1: /path... (1 Reply)
Discussion started by: woody62
1 Replies

6. UNIX for Dummies Questions & Answers

help with recursive copy command

Hi Guys, I am experiencing a problem right now while copying a directory as well as its subdirectories to my target directory. I know this is a very simple UNIX command using cp -R source directory target directory. but unfortunatley while doing this an error comes up on the command line saying... (2 Replies)
Discussion started by: Knowledge_Xfer
2 Replies

7. UNIX for Dummies Questions & Answers

Copy a command string from the command line

How can we copy a command string from a previous command line and paste it into the cursor position on the current command line? I know that ^c will not work as the shell will interpret as an interrupt signal. Thanks, (1 Reply)
Discussion started by: Pouchie1
1 Replies

8. Shell Programming and Scripting

Help with find and copy command

I entered the following command find . -type f \( -newer startdate -a ! -newer enddate \) -exec cp tmp {} \; I got the following error: cp: 0653-436 tmp is a directory. Specify -r or -R to copy. What's happening here? (2 Replies)
Discussion started by: bbbngowc
2 Replies

9. Shell Programming and Scripting

Help with using grep command with copy command

Hi, im taking an entry Unix class, and as part of my lab assignment I have to copy all files in the /home/david/lab3 directory that have the file extension .save to your lab3/temp directory. I'm having trouble getting the grep to do anything worth while I've been trying to do: cp... (6 Replies)
Discussion started by: Critical jeff
6 Replies

10. Shell Programming and Scripting

Help with copy command

Hello, I have a directory in which I have files as follows CRDT.csv CRDT.csv.1 CRDT.csv.2 .... CRDT.csv.n I would like to copy it over to another directory as crdt_lon.csv crdt_lon.csv.1 crdt_lon.csv.2 .... crdt_lon.csv.n I am looking for a one line command but I am... (5 Replies)
Discussion started by: srattani
5 Replies

LEARN ABOUT MINIX

ppmtosixel

ppmtosixel(1)                                                 General Commands Manual                                                ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.  The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
              pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order  of  magni-
              tude larger than a compressed file and prints much slower.

       -margin
              If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
              fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater  than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

                                                                   26 April 1991                                                     ppmtosixel(1)
All times are GMT -4. The time now is 04:05 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy