Hello everybody, I have a problem with creating a script which allows a single parameter to be passed. Sorry if I'm not expert, I'm new at this and .
The code is
Code:
if [ "$1" = "" ]; then
echo "Something"
exit
fi
...does other things...
grep -i $1 $TEMPUSERS > $USERSFILE
COUNT=`wc -l $USERSFILE`
echo "Found $COUNT users"
There are two errors:
1) the grep $1 is not correctly interpreted because the expanded command doesn't have the ' delimitator.
2) There must be some error on the COUNT assignment too, because it doesn't write out the no of lines in the file.
I tried with ksh and bash shell, but it doesn't seem to be a shell type problem.
I know i'm really at the basics, but some help would be very appreciated
Last edited by Franklin52; 10-22-2009 at 02:50 PM..
Reason: Replaced quote tags with code tags
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
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Hi All,
Im using Bash.
I have a pipe delimited config file which contains 3 columns,
1st column = location of a file to be chnaged
2 column = expression to find within file
3rd column = string to replace.
A script will loop through the contetnts of this file and apply the changes using... (2 Replies)
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
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Hello experts,
I am exploring parameter expansion, and trying to cut the fields in a URL.
Following is the requirement:
I have
// abc.nnt /dir1/dir2/dir3/dir4/somefile.java
What i need to get is the path after dir3, and dir3 will be passed.
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Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
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j=0
while } ]
do
k=`expr $j + 1`
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Hello Gurus,
I am looking for regular expressions for awk to filter on second column 2nd and 3rd digit
Using in code something like: awk '{if ( $2 == "0::" ) print}
source file:
0 0:0:0 FC 15 normal 559104 51200 0:3:1* 1:3:1 600
1 0:0:1 FC 15 normal ... (2 Replies)
Discussion started by: vishalgoyal
2 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)
10-22-2009
Regular expression as parameter
