Not working
====================
Pls advise how to cut the string with "(" pattern.
When a string literal is used as a regular expression, it first has to pass through awk's string parser before the regular expression parser even sees it. By the time the second parser gets it, it's been reduced from \( to ( which is not the correct regular expression.
Use a second backslash so that the string parser sees \\( and outputs \( to the regular expression parser.
However, it's best practice to avoid the complexity of string literal regular expressions when possible.
Hi,
I had this syntax and no matter what I do, I can't get it run.
err message:
run6: syntax error at line 121 : `(' unexpected
I went to line 121 and it's comment out!
All the variables passed to nawk are valid.
There are two places I suspect have the problem:
1.... (3 Replies)
I found a command who prints x lines before and after a line who contain a searched string in a text file.
The command is :
-------------------
nawk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print;c=a}b{r=$0}' b=2 a=4 s="string" file1
...where "b" and "a" are the number of lines to print... (2 Replies)
i'm new to shell scripting and have a problem please help me
in the script i have a nawk block which has a variable count
nawk{
.
.
.
count=count+1
print count
}
now i want to access the value of the count variable outside the awk block,like..
s=`expr count / m`
(m is... (5 Replies)
I have a report which contains the following:
Count Value %
47 69.12
18 26.47
3 4.41
I want to grep the total on the bottom brackets and store in a variable. However this may have a different figure everyday.
To read the i do:
... (1 Reply)
Hi,
Please help me I want to filter all messages having a value less than a particular value..Please advice how to use <= in the below red marked script..
Getting the error as no such file or directory for the marked line no.
Thanks in advance...
Script is as under :
read message
gawk... (5 Replies)
Hi All,
I am seeing an issue while using toupper in nawk. Below is the code that I am using.Toupper method is not working as expected in this case.nawk 'NR==FNR{a=$4" "$5}NR>FNR{print NF?$0:a"\n";if(/^cn:/) x=toupper($0)}' FS="" id_list.txt attributes.txt > out
In the above script, id_list... (9 Replies)
#ifconfig -a | nawk '/1.1.1.1/{print}'
inet 1.1.1.1 netmask xxxxxxxxx broadcast 0.0.0.0
If i assign the ip to a variable and search for the variable nothing gets printed!!
# ifconfig -a | nawk -v ip=1.1.1.1 '/ip/{print}'
I am not able to understand why this is happening! (6 Replies)
Hi,
I'm trying to reformat some badly formatted XML that I've extracted from Oracle clob columns using the following nawk command:
nawk '{gsub(/</,/>\n/); print}' test.raw > test.xml
the substitution executes fine, but instead of subbing < with > followed by newline, it subs the < with a... (3 Replies)
Hi.. i am running nawk scripts on solaris system to get records of file1 not in file2 and find duplicate records in a while with the following scripts -compare
nawk 'NR==FNR{a++;next;} !a {print"line"FNR $0}' file1 file2duplicate - nawk '{a++}END{for(i in a){if(a-1)print i,a}}' file1in the middle... (12 Replies)
Discussion started by: Abhiraj Singh
12 Replies
LEARN ABOUT BSD
comp
REGEX(3) Library Functions Manual REGEX(3)NAME
re_comp, re_exec - regular expression handler
SYNOPSIS
char *re_comp(s)
char *s;
re_exec(s)
char *s;
DESCRIPTION
Re_comp compiles a string into an internal form suitable for pattern matching. Re_exec checks the argument string against the last string
passed to re_comp.
Re_comp returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If re_comp is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
Re_exec returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled regular
expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both re_comp and re_exec may have trailing or embedded newline characters; they are terminated by nulls. The regular
expressions recognized are described in the manual entry for ed(1), given the above difference.
SEE ALSO ed(1), ex(1), egrep(1), fgrep(1), grep(1)DIAGNOSTICS
Re_exec returns -1 for an internal error.
Re_comp returns one of the following strings if an error occurs:
No previous regular expression,
Regular expression too long,
unmatched (,
missing ],
too many () pairs,
unmatched ).
3rd Berkeley Distribution May 15, 1985 REGEX(3)