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Top Forums UNIX for Dummies Questions & Answers find string and get the rest of the line in a pipe delimited file Post 302598770 by kokoro on Wednesday 15th of February 2012 11:19:05 AM
Old 02-15-2012
find string and get the rest of the line in a pipe delimited file

Hi friends,

I have a file where I should search for a string and get the rest of the line but without the delimiter using awk.
for example I have the series of string in a file:
input_string.txt
Code:
bbb
ccc
aaa

and the mapping file looks like this.
mapping.txt
Code:
aaa|12
bbb|23
ccc|43

i need to get the mapped number and use it in a variable. the code looks like this:
Code:
while read line;
do
   mapped= ??AWK $line mapping.txt
   ....
   ....
done < input_string.txt

Is there a way to do this using awk or sed? Please help Smilie
 

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STRSEP(3)						     Library Functions Manual							 STRSEP(3)

NAME
strsep - separate strings SYNOPSIS
#include <string.h> char * strsep(stringp, delim) char **stringp; char *delim; DESCRIPTION
The strsep() function locates, in the string referenced by *stringp , the first occurrence of any character in the string delim (or the terminating `' character) and replaces it with a `'. The location of the next character after the delimiter character (or NULL, if the end of the string was reached) is stored in *stringp . The original value of *stringp is returned. An ``empty'' field, i.e. one caused by two adjacent delimiter characters, can be detected by comparing the location referenced by the pointer returned in *stringp to `'. If *stringp is initially NULL, strsep() returns NULL. EXAMPLES
The following uses strsep() to parse a string, containing tokens delimited by white space, into an argument vector: char **ap, *argv[10], *inputstring; for (ap = argv; (*ap = strsep(&inputstring, " ")) != NULL;) if (**ap != '') ++ap; HISTORY
The strsep() function is intended as a replacement for the strtok() function. While the strtok() function should be preferred for porta- bility reasons (it conforms to ANSI C X3.159-1989 (``ANSI C'')) it is unable to handle empty fields, i.e. detect fields delimited by two adjacent delimiter characters, or to be used for more than a single string at a time. The strsep() function first appeared in 4.4BSD. 4.4 Berkeley Distribution January 12, 1996 STRSEP(3)
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