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Top Forums UNIX for Dummies Questions & Answers replacing 1 character with many : tr Post 302255781 by hkansal on Friday 7th of November 2008 05:23:36 AM
Old 11-07-2008
Bug there

Quote:
I think you should change the colour!! :-)
Done Smilie

Quote:
you have extra spaces in your sed script after the = which may prevent it matching and may also affect the parameters being set correctly, depending on what the file is used for. Same when you add a new attribute to the file.
The space is required because in the file the attribute value pairs are kept as:
attrib1= value
attrib2= value

Still I would try out w/o the space and ll see if it works too.

Quote:
use a temporary file somewhere else, e.g. in /tmp, maybe using mktemp, or by adding the PID to make it unique, e.g. /tmp/htmp.$$, and remove it after use (if the users says no to "save changes").
I ll try to incorporate this.

thanks for the inputs Smilie

Quote:
You might try sed 's/\//\\\//'
Tried this but it did not work Smilie

Quote:
actually you also need to add a g to the end
[CODE]
sed "s^$attrib= .*^$attrib= $value^g" $file > htmp.txt # Store result in htmp.txt
[CODE]
I hope you are talking about this. Actually, I needed to have '\/' replacing '/' in $value. The variable wasn't being read appropriately. I am still unsure of the reason.

Thank You.

Regards

Last edited by hkansal; 11-07-2008 at 02:23 PM..
 

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PASTE(1)						    BSD General Commands Manual 						  PASTE(1)

NAME
paste -- merge corresponding or subsequent lines of files SYNOPSIS
paste [-s] [-d list] file ... DESCRIPTION
The paste utility concatenates the corresponding lines of the given input files, replacing all but the last file's newline characters with a single tab character, and writes the resulting lines to standard output. If end-of-file is reached on an input file while other input files still contain data, the file is treated as if it were an endless source of empty lines. The options are as follows: -d list Use one or more of the provided characters to replace the newline characters instead of the default tab. The characters in list are used circularly, i.e., when list is exhausted the first character from list is reused. This continues until a line from the last input file (in default operation) or the last line in each file (using the -s option) is displayed, at which time paste begins selecting characters from the beginning of list again. The following special characters can also be used in list: newline character tab character \ backslash character Empty string (not a null character). Any other character preceded by a backslash is equivalent to the character itself. -s Concatenate all of the lines of each separate input file in command line order. The newline character of every line except the last line in each input file is replaced with the tab character, unless otherwise specified by the -d option. If '-' is specified for one or more of the input files, the standard input is used; standard input is read one line at a time, circularly, for each instance of '-'. EXAMPLES
List the files in the current directory in three columns: ls | paste - - - Combine pairs of lines from a file into single lines: paste -s -d ' ' myfile Number the lines in a file, similar to nl(1): sed = myfile | paste -s -d ' ' - - Create a colon-separated list of directories named bin, suitable for use in the PATH environment variable: find / -name bin -type d | paste -s -d : - DIAGNOSTICS
The paste utility exits 0 on success, and >0 if an error occurs. SEE ALSO
cut(1), lam(1) STANDARDS
The paste utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. HISTORY
A paste command appeared in Version 32V AT&T UNIX. BUGS
Multibyte character delimiters cannot be specified with the -d option. BSD
September 20, 2001 BSD
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