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Full Discussion: sed - replacement file path with variable - Escaping / character
Top Forums Shell Programming and Scripting sed - replacement file path with variable - Escaping / character Post 302909116 by carlr on Monday 14th of July 2014 02:54:28 PM
Old 07-14-2014
sed - replacement file path with variable - Escaping / character
Hi,,
I have the line below in a file:
Code:
$!VarSet |LFDSFN1| = '"E:\APC\Trials\20140705_427_Prototype Trial\Data\T4_20140705_Trial_Cycle_Data_13_T_Norm.txt" "VERSION=100 FILEEXT=\"*.txt\" FILEDESC=\"General Text\" "+""+"TITLE{SEARCH=NONE  NAME=\"New Dataset\" LINE=1

I want to write a script to change it to:
Code:
$!VarSet |LFDSFN1| =  '"T4_20140705_Trial_Cycle_Data_13_T_Norm.txt" "VERSION=100  FILEEXT=\"*.txt\" FILEDESC=\"General Text\" "+""+"TITLE{SEARCH=NONE   NAME=\"New Dataset\" LINE=1

i.e remove the section of the file path.
E:\APC\Trials\20140705_427_Prototype Trial\Data\

The file path and the file names are varibels defined by
Code:
DATA_FILE_NAME=$(awk -F'"' -v VAR="$FILE" 'NR==4 {print $2}' $FILE)

giving me : E:\APC\Trials\20140705_427_Prototype Trial\Data\T4_20140705_Trial_Cycle_Data_13_T_Norm.txt

Code:
DATA_FILE_NAME_NO_PWD=$(echo $DATA_FILE_NAME | awk -F'\' '{print $NF}')

giving me: T4_20140705_Trial_Cycle_Data_13_T_Norm.txt

I wanted to use SED to replace $DATA_FILE_NAME with the $DATA_FILE_NAME_NO_PWD, however I can't get it to work. I know its due to the / in the variable $DATA_FILE_NAME however i can't work out how to escape this character. I've tried as many ways as i can find, but still can't get it to work.

How do i get this to work, what have i missed?


Code:
sed -i "s|$DATA_FILE_NAME|$DATA_FILE_NAME_NO_PWD|" "$FILE"

Last edited by carlr; 07-14-2014 at 04:24 PM.. Reason: Add and fix CODE tags.
 

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LEARN ABOUT REDHAT

unix2dos

unix2dos(1)						      General Commands Manual						       unix2dos(1)

NAME

       unix2dos - UNIX to DOS text file format converter

SYNOPSYS

       unix2dos [options] [-c convmode] [-o file ...] [-n infile outfile ...]

       Options:

       [-hkqV] [--help] [--keepdate] [--quiet] [--version]

DESCRIPTION

       This manual page documents unix2dos, the program that converts text files in UNIX format to DOS format.

OPTIONS

       The following options are available:

       -h --help
	      Print online help.

       -k --keepdate
	      Keep the date stamp of output file same as input file.

       -q --quiet
	      Quiet mode. Suppress all warning and messages.

       -V --version
	      Prints version information.

       -c --convmode convmode
	      Sets conversion mode. Simulates unix2dos under SunOS.

       -o --oldfile file ...
	      Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.

       -n --newfile infile outfile ...
	      New  file  mode.	Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
	      used or you WILL lost your files.

EXAMPLES

       Get input from stdin and write output to stdout.

	      unix2dos

       Convert and replace a.txt. Convert and replace b.txt.

	      unix2dos a.txt b.txt

	      unix2dos -o a.txt b.txt

       Convert and replace a.txt in ASCII conversion mode.  Convert and replace b.txt in ISO conversion mode.

	      unix2dos a.txt -c iso b.txt

	      unix2dos -c ascii a.txt -c iso b.txt

       Convert and replace a.txt while keeping original date stamp.

	      unix2dos -k a.txt

	      unix2dos -k -o a.txt

       Convert a.txt and write to e.txt.

	      unix2dos -n a.txt e.txt

       Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.

	      unix2dos -k -n a.txt e.txt

       Convert and replace a.txt. Convert b.txt and write to e.txt.

	      unix2dos a.txt -n b.txt e.txt

	      unix2dos -o a.txt -n b.txt e.txt

       Convert c.txt and write to e.txt. Convert and replace a.txt.  Convert and replace b.txt. Convert d.txt and write to f.txt.

	      unix2dos -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

DIAGNOSTICS

BUGS

       The program does not work properly under MSDOS in stdio processing mode.  If you know why is that so, please tell me.

AUTHOR

       Benjamin Lin - ( blin@socs.uts.edu.au )

MISCELLANY

       Tested environment:

	      Linux 1.2.0 with GNU C 2.5.8

	      SunOS 4.1.3 with GNU C 2.6.3

	      MS-DOS 6.20 with Borland C++ 4.02

       Suggestions and bug reports are welcome.

SEE ALSO

       dos2unix(1)

1995.03.31							   unix2dos v2.2						       unix2dos(1)
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