Hello,
was just wondering how to compare strings in unix? I mean as in C there is a function strcmp() in string.h, is there any function in unix for that? I tried using
Code:
if [ "p" > "q" ]
and all such variations but didn't succeed. Any help would be appreciated. Thanks in advance
Hi,
I am starting out to program on Unix, having had experience in C and C++ in DOS. I would like to know, of these three, which is the best book for learning C programming in Unix:
Advanced Unix Programming by Marc Rochkind
Advanced Unix Programming by Warren Gay
Advanced Programming in... (6 Replies)
hi ,
i am trying to compre two strings
if ] or if ]
when the length of var1 is small (around 300-400 char ) it works fine
but when it is large (around 900-1000 chars) it fails
is there any limitations for this type of comparison ??? (3 Replies)
hi ,
i am trying to compre two strings
if ] or if ]
when the length of var1 is small (around 300-400 char ) it works fine
but when it is large (around 900-1000 chars) it fails
is there any limitations for this type of comparison ??? (1 Reply)
I want to remove a line that has empty string at second field when I use cut with delimeter , like below
$cat demo
hello, mum
hello,
#!/bin/sh
while read line
do
if
then
# remove the current line command goes here
fi
done < "demo"
i got an error message for above... (4 Replies)
I Have a script which gets the status of oracle database and if the status is READ WRITE ..it should echo "db is up " else "db is down"
Here is the code
if
then
echo "db up"
else
echo "db down"
fi
done;
The script is giving me out put "db down" even thoug the value of... (6 Replies)
Hello everybody,
I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input.
I... (1 Reply)
Hello everybody,
I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input.
I... (8 Replies)
Hi,
can someone please help me!!! urgent!
I have a strange issue here. I grep for 2 strings from a txt files and compare the string value. Though the string values are the same, they are compared as different values. Please help
Case-1
--------
Here I grep for 2 different field values... (3 Replies)
guys , i am using inotify for monitoring one directory to check core file generation , my snippet of code is follows
#!/bin/bash
DIR=$1
inotifywait -q -e create -m $DIR | while read path events name;
do
if ]; then
echo "Now I am going to do something with $name in directory $path."... (5 Replies)
I have the logic below to look up for matches within the columns between the two files with awk.
In the if statement is where the string comparison is attempted with ==
The issue seems to be with the operands, as
1. when " '${SECTOR}' " -- double quote followed by single quote -- awk matches... (1 Reply)
Discussion started by: deadyetagain
1 Replies
LEARN ABOUT NETBSD
strncmp
STRCMP(3) BSD Library Functions Manual STRCMP(3)NAME
strcmp, strncmp -- compare strings
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
int
strcmp(const char *s1, const char *s2);
int
strncmp(const char *s1, const char *s2, size_t len);
DESCRIPTION
The strcmp() and strncmp() functions lexicographically compare the nul-terminated strings s1 and s2.
RETURN VALUES
The strcmp() and strncmp() return an integer greater than, equal to, or less than 0, according to whether the string s1 is greater than,
equal to, or less than the string s2. The comparison is done using unsigned characters, so that '200' is greater than ' '.
The strncmp() compares not more than len characters.
SEE ALSO bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), strxfrm(3)STANDARDS
The strcmp() and strncmp() functions conform to ANSI X3.159-1989 (``ANSI C89'').
NOTES
If len is zero strncmp() returns always 0.
BSD June 4, 1993 BSD
02-25-2009
