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Full Discussion: Replace special characters
Top Forums Shell Programming and Scripting Replace special characters Post 302584120 by ratheeshjulk on Thursday 22nd of December 2011 08:18:55 PM
Old 12-22-2011
Replace special characters
I have a line ending with special character and 0
The special character is the field separator for this line
in VI mode the file will look like below, but while cat the special character wont display

i know the hexa code for the special character ^_ is \x1f and ascii code is
\0037,


Code:
000^_^_^_^_^_^_0.000000^_^_^_^_^_^_^_^_^_^_^_^_0^_0.000000^_^_^_^_0^_0^_^_^_0



I can filter these lines which is ending with ^_0 with the below command

Code:
grep `echo "\0037"`0$ filenam


Now my requirement is i want add one end delimiter to such lines.
simply i want replace the last ^_0with ^_0{}, where {} is the new sring i am going to add as an end delimeter


the whole file will look like this
Code:
30093354^_40^_1^_1^_615220181^_1324314123^_b0002
b00^_^_^_b0002
b0002/038513530400025^_2^_9^_3^_1324929600^_1^_1^_19.070000^_0.000000^_19.070000^_0.000000^_0.000000^_USD ^_1.000000^_USD ^_0^_1^_1^_1^_^_^_^_^_3^_^_2^_ ^_1324314123907^_^_^_^_0^_0.000000^_^_^_^_^_^_^_^_0^_0.000000^_^_^_^_0^_0^_^_^_0
68576101^_4^_1^_1^_628398181^_1323894124^_m1500
M15^_^_^_m1500
M1500/038513480015005^_2^_9^_3^_1324501200^_1^_1^_31.410000^_0.000000^_31.410000^_0.000000^_0.000000^_USD ^_1.000000^_USD ^_0^_0^_0^_0^_^_^_^_56^_3^_^_20^_ ^_1323894124565^_^_^_^_0^_0.000.000000^_^_^_^_^_^_^_^_^_^_^_^_0^_0.000000^_^_0^_0^_0^_0^_^_^_0

>

out put should be something like this

Code:
30093354^_40^_1^_1^_615220181^_1324314123^_b0002
b00^_^_^_b0002
b0002/038513530400025^_2^_9^_3^_1324929600^_1^_1^_19.070000^_0.000000^_19.070000^_0.000000^_0.000000^_USD ^_1.000000^_USD ^_0^_1^_1^_1^_^_^_^_^_3^_^_2^_ ^_1324314123907^_^_^_^_0^_0.000000^_^_^_^_^_^_^_^_0^_0.000000^_^_^_^_0^_0^_^_^_0{}
68576101^_4^_1^_1^_628398181^_1323894124^_m1500
M15^_^_^_m1500
M1500/038513480015005^_2^_9^_3^_1324501200^_1^_1^_31.410000^_0.000000^_31.410000^_0.000000^_0.000000^_USD ^_1.000000^_USD ^_0^_0^_0^_0^_^_^_^_56^_3^_^_20^_ ^_1323894124565^_^_^_^_0^_0.000.000000^_^_^_^_^_^_^_^_^_^_^_^_0^_0.000000^_^_0^_0^_0^_0^_^_^_0{}

>

---------- Post updated at 08:18 PM ---------- Previous update was at 08:21 AM ----------

I solved the issue, But for some reason i could'nt use the desired string '{}' but managed with 'Ç'

Code:
perl -i -ne 's;(\x1F)0\n;\x1F0Ç\n;g;print;' file

 

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LEARN ABOUT CENTOS

secolor.conf

secolor.conf(8) 					      System Manager's Manual						   secolor.conf(8)

NAME

       secolor.conf - The SELinux color configuration file

DESCRIPTION

       The  /etc/selinux/{SELINUXTYPE}/secolor.conf  configuation file controls the color to be associated to the context components associated to
       the raw context passed by selinux_raw_context_to_color(3), when context related information is to be displayed in color by an SELinux-aware
       application.

       selinux_raw_context_to_color(3)	obtains  this  color  information  from  the  active  policy secolor.conf file as returned by selinux_col-
       ors_path(3).

FILE FORMAT

       The file format is as follows:
	      color color_name = #color_mask
	      [...]

	      context_component string = fg_color_name bg_color_name
	      [...]

       Where:
       color
	      The color keyword. Each color entry is on a new line.
       color_name
	      A single word name for the color (e.g. red).
       color_mask
	      A color mask starting with a hash (#) that describes the hexadecimal RGB colors with black being #000000 and white being #ffffff.
       context_component
	      The context component name that must be one of the following:
		     user, role, type or range
	      Each context_component string ...  entry is on a new line.
       string
	      This is the context_component string that will be matched with the raw context component passed by selinux_raw_context_to_color(3).
	      A wildcard '*' may be used to match any undefined string for the user, role and type context_component entries only.

       fg_color_name
	      The color_name string that will be used as the foreground color.	A color_mask may also be used.
       bg_color_name
	      The color_name string that will be used as the background color.	A color_mask may also be used.

EXAMPLES

       Example 1 entries are:
	      color black  = #000000
	      color green  = #008000
	      color yellow = #ffff00
	      color blue   = #0000ff
	      color white  = #ffffff
	      color red    = #ff0000
	      color orange = #ffa500
	      color tan    = #D2B48C

	      user * = black white
	      role * = white black
	      type * = tan orange
	      range s0-s0:c0.c1023 = black green
	      range s1-s1:c0.c1023 = white green
	      range s3-s3:c0.c1023 = black tan
	      range s5-s5:c0.c1023 = white blue
	      range s7-s7:c0.c1023 = black red
	      range s9-s9:c0.c1023 = black orange
	      range s15:c0.c1023   = black yellow

       Example 2 entries are:
	      color black  = #000000
	      color green  = #008000
	      color yellow = #ffff00
	      color blue   = #0000ff
	      color white  = #ffffff
	      color red    = #ff0000
	      color orange = #ffa500
	      color tan    = #d2b48c

	      user unconfined_u = #ff0000 green
	      role unconfined_r = red #ffffff
	      type unconfined_t = red orange
	      user user_u	= black green
	      role user_r	= white black
	      type user_t	= tan red
	      user xguest_u	= black yellow
	      role xguest_r	= black red
	      type xguest_t	= black green
	      user sysadm_u	= white black
	      range s0:c0.c1023 = black white
	      user *		= black white
	      role *		= black white
	      type *		= black white

SEE ALSO

       mcstransd(8), selinux_raw_context_to_color(3), selinux_colors_path(3)

SELinux API documentation					   08 April 2011						   secolor.conf(8)
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