Note that you don't grep a folder (usually called a directory in UNIX and Linux environments). The grep utility searches for text in the contents of text files (not directories on most systems).
If you're trying to count the number of files in a directory that have names matching the globbing pattern stored in your shell variable named (confusingly) file_name, you could try something like:
which should work as long as there aren't any newline characters in your file names. If you have users who create filenames containing newline characters, or if you just want to use shell built-ins, a fast way to get what you want is:
(assuming that you aren't using command line arguments or have already gathered what you need from them, and assuming that at least one file matching your pattern exists) or, if there might not be any matching files (but there also might be a file with a name that is your pattern):
hello,
I use AIX with ISM PILOT, I want to match something with a varible like this :
$variable = 10 #this variable is the number of the job
"$variable STARTED" # the pattern
how can use this variable to match it with the word STARTED
Tanks (0 Replies)
Anyone know how I will use awk's variable in a regular expression?
This line of code of mine is working, the value PREMS should be a variable:
awk '$1 ~ /PREMS/ { if(length(appldata)+2 >= length($1)) print $0; }' appldata=$APPLDATA /tmp/file.tmp
The value of APPLDATA variable is PREMS.
... (2 Replies)
Hi,
I have this script:
awk -v va=45 '$0~va{print}' flo2
That returns: "4526745 1234 " (this is the only line of the file "flo2".
However, I would like to get "va" to match the begining of the line, so that is "va" is different than 45 (eg. 67, 12 ...) I would not have any output. That... (3 Replies)
Hi All,
Below is a sample code:
print "Enter the Name: ";
my $Name = <>;
print "Word is $Name";
open (FH,"AIDNameList.txt");
while (<FH>)
{
my $line;
print "Word is $Name";
for $line(<FH>)... (12 Replies)
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Hi All,
I have a sftp session log where I am transferring multi files by issuing "mput abc*.dat". The contents of the logfile is below -
#################################################
Connecting to 10.75.112.194...
Changing to: /home/dasd9x/testing1
sftp> mput abc*.dat
Uploading... (7 Replies)
i have a command line like this in csh script
grep -i "$argv$"
which i wanted to select the line ending with string provided as argument but it couldn't interpret the '$' (ending with)..
any help? (3 Replies)
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
I'm trying to use a series of regular expressions as variables but can't get it to behave properly.
You can see below what I'm trying to do.
Here with lowercase a-z and the same with uppercase, numbers 0-9 and again with a set of special characters, without having to type out every single... (3 Replies)
Discussion started by: 3therk1ll
3 Replies
LEARN ABOUT ULTRIX
re_comp
regex(3) Library Functions Manual regex(3)Name
re_comp, re_exec - regular expression handler
Syntax
char *re_comp(s)
char *s;
re_exec(s)
char *s;
Description
The subroutine compiles a string into an internal form suitable for pattern matching. The subroutine checks the argument string against
the last string passed to
The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
The subroutine 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 and may have trailing or embedded newline characters; they are terminated by nulls. The regular expressions
recognized are described in the manual entry for given the above difference.
Diagnostics
The subroutine returns -1 for an internal error.
The subroutine returns one of the following strings if an error occurs:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
See Alsoed(1), ex(1), egrep(1), fgrep(1), grep(1)regex(3)