I have a command called
cd $HDRROOT/release/tools/cfg
My query is what it means?
tHat is.... $HDRROOT part is not clear.
If I put this command it says path not found....
I doubt that $HDRROOT is trying to mean smething I am not clear of.
PL help......... (4 Replies)
I found a file in my base folder width the name replace.sh and width the text string.
sed -i "s/$1/$2/g" `grep -ir $1 ./*|grep -v '.svn'|cut -d: -f1`
Wat does it mean and what does it do? (1 Reply)
Can you please tell me what this means?
use grep to find from the file myfile.txt all lines containing the sequence tt but not more 2 ts?
I have no idea. (2 Replies)
Hi,
I have seen in some ksh script, that we are executing shell scripts inside other shell script as
. variable.sh
What is . here? Their is space between . and variabloe. And why we are not executing it like ./variable.sh? I know that . signifies current directory , but what its... (2 Replies)
HI
what does the $(NF) means.
here i want to understand the working.
what i know is that in awk NF argument will tell number of column in a file
i have below file
alpha
a
beta
b
if i use command cat kv | paste - - | awk '{print $1," "$2 "------>"$(NF)}'
i get the o/p as
alpha ... (3 Replies)
Discussion started by: scriptor
3 Replies
LEARN ABOUT BSD
regex
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)