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Top Forums UNIX for Beginners Questions & Answers Replace string2 by string3 where string1 is found in line Post 303039386 by apalex on Wednesday 2nd of October 2019 07:39:48 PM
Old 10-02-2019
sed - substitute first occurrence after search

I found this in the forum that searches a file for string1, substitute all occurrences of string2 with string3.
(Title: Replace string2 by string3 where string1 is found in line)

>> sed -i '/string1/s/string2/string3/g' TextFile

How will I perform the same sed command and only substitute string3 to the first occurrence of string2 right after the occurrence of string1 in same line?

File content:
Line contains string1 with string2 with other data on this line and another string2

Output:

Line contains string1 with string3 with other data on this line and another string2

Thanks.

Last edited by apalex; 10-03-2019 at 08:19 AM..
 

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SSAStringCpy(3SNMP)					      SNMP Library Functions					       SSAStringCpy(3SNMP)

NAME
SSAStringCpy, SSAStringInit, SSAStringToChar, SSAStringZero - Sun Solstice Enterprise Agent string helper functions SYNOPSIS
cc [ flag ... ] file ... -lssasnmp [ library .. ] #include <impl.h> void *SSAStringZero(String *string); int SSAStringInit(String *string, uchar_t *chars, int len, char *error_label); int SSAStringCpy(String *string1, String *string2, char *error_label); char *SSAStringToChar(String string); DESCRIPTION
The SSAStringCpy() function makes a deep copy of string2 to string1. This function assumes that string1 has been processed by the SSAS- tringZero() function. Memory is allocated inside the string1 and the contents of string2, not just the pointer, is copied to the string1. If an error is encountered, an error message is stored in the error_label buffer. The SSAStringInit() function copies the char array from chars to the string instance with the specified length len. This function assumes that the string instance has been processed by the SSAStringZero() function or no memory is allocated inside the string instance. If an error is encountered, an error message is stored in the error_label buffer. The SSAStringToChar() function returns a temporary char array buffer for printing purposes. The SSAStringZero() function frees the memory inside of the String instance, but not the string object itself. RETURN VALUES
The SSAStringInit() and SSAStringCpy() functions return 0 if successful and -1 if error. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 17 Dec 1996 SSAStringCpy(3SNMP)
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