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Full Discussion: Character replacement
Top Forums Shell Programming and Scripting Character replacement Post 302134893 by piooooter on Tuesday 4th of September 2007 08:22:23 AM
Old 09-04-2007
Hi,

Small update regarding my problem. Currently I need to match pattern from the last occurence of
Code:
","

or
Code:
,,"

till the end of line. For example matching on the following line:

Code:
"one","two","three",,"five",,"sev"e,n"

should return
Code:
sev"e,n

. I would like to use sed or awk, but any other solution will be fine. Can you please help me writing a proper regular expression?

Pit
 

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newalias(1)						      General Commands Manual						       newalias(1)

NAME
newalias - install new elm aliases for user or system SYNOPSIS
Remarks replaces the former functionality of the command. DESCRIPTION
The command creates new alias database files from an alias text file for use by and other programs. For user aliases, this functionality can also be performed from the Alias Menu of the program (see elm(1)). Options recognizes the following option: Global. The program updates the system alias files instead of a user's alias files. Operation Without the option, updates a user's alias files, based on an input file named Upon finding the file, it creates the output files named With the option, updates the system alias files, based on an input file named Upon finding the file, it creates the output files named In either case, you need read access to the file and write access to the other files and the directory. Text File Entries Each entry in either file is expected to be in the following format: The field names are defined as follows: address-list A blank- or comma-separated list of one or more mail addresses, personal alias names, and/or group alias names. In practice, each item is tested first as an alias name. If it is not an alias name, it is assumed to be a mail address. A mail address can be in Internet form in UUCP form or in alias form (see sendmail(1M)). It can also be the name of a local mail user, which is appended with the local host name in Internet form. alias-list A blank- or comma-separated list of alias names. Each name identifies the same alias entry. An alias name can be made up of letters digits underscores dashes and periods Alias names are not case-sensitive, so and are equivalent. comment A string containing any information you wish about the entry, such as location and phone numbers. It is displayed in the Alias Menu of the program, but does not transmit it in a mail message. This field can contain any characters except an unquoted equal sign See the Quoting Characters subsection. firstname The first name of the person (or group). It is combined with lastname to form the fullname. This field can contain any characters except an unquoted equal sign or an unquoted comma See the Quoting Characters subsection. The only first name under the Personal or Group Aliases subheading below is: in lastname The last name of the person (or group). It is combined with firstname to form the fullname. This field can contain any characters except an unquoted equal sign an unquoted semicolon or an unquoted comma See the Quoting Characters subsection. The last names under the Personal or Group Aliases subheading below are: and fullname The combination of firstname lastname. It is usually sent in a mail header in parentheses after the address. It is also displayed in the Alias Menu of the program and by the command (see elm(1) and elmalias(1)). The delimiters have the following precedence: o The first and second equal signs mark the end of the alias-list and the beginning of the address-list, respectively. Both equal signs are required. o The first comma after the first equal sign and before the second equal sign marks the beginning of the comment field. o The first semicolon after the first equal sign and before the next comma or second equal sign marks the beginning of the firstname field. A personal or individual alias has only one address in address-list, as in: A group alias has two or more addresses in address-list, as in: Entries can be continued over several lines; the continuation lines must start with a blank (a space or tab). A comment is any line starting with a number sign It is ignored. Blank lines and comments can be interspersed within entries. Quoting Characters You can include normally excluded characters in firstname, lastname, comment, and mail addresses in address-list by escaping each character with a backslash or by enclosing the string in quotation marks ("). To include a quotation mark or a backslash, escape it with a back- slash, whether inside or outside quotation marks. FILES
User alias database data table User alias database directory table User alias database hash table User alias source text System alias database data table System alias database directory table System alias database hash table System alias source text AUTHOR
was developed by HP. SEE ALSO
elm(1), elmalias(1), mail(1), mailx(1). newalias(1)
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