01-29-2008
egrep understanding problem
Hi,
Can anyone please let me know the meaning of this line,i am not able to understand the egrep part(egrep '^[0-9]{1,2}).This will search for this combination in beginning but what does the values in {}signifies here.
/bin/echo $WhenToRun | egrep '^[0-9]{1,2}:[0-5][0-9]$' >/dev/null
Last edited by namishtiwari; 01-29-2008 at 06:38 AM..
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi !!! Dear People,
Please help me with the following problem.
consider this output:
Top 5 Timed Events
~~~~~~~~~~~~ Total
Event Waits Time (s) Ela Time
---------------------------- ------------ ----------- -----
CPU time ... (3 Replies)
Discussion started by: user__user3110
3 Replies
2. Shell Programming and Scripting
Hello Experts,
I am trying to parse a gz file like this
gzip -cd filename | xargs egrep -h -e '.*somepattern</TAG>' | grep -c '<TAG2>`date '+%Y-%m-%d'`</TAG2>'
But I am getting an error :
egrep cant open.
Any ideas fellas? (1 Reply)
Discussion started by: King Nothing
1 Replies
3. Shell Programming and Scripting
Hello:
I am working in bash and am a newbie.
I want to eliminate spaces from strings. Since this is a basic operation, I searched online and implemented the suggestions; however, I am facing a problem here.
I have an input file which looks like this:
abc defghi
jklmno pqrs
tuvw xyzabcd... (8 Replies)
Discussion started by: andyu11
8 Replies
4. Shell Programming and Scripting
Hi guys I'm using the following script to change input file format to another format. some where I'm getting the error. Could you please let me know if you find out?
cat input.txt|egrep -v ‘^#'|\ perl -ane ‘if (@F>3){$_=~/(chr.+):(\d+)\ s()/;print $1,”\t”,$2,”\t”,($2+35),”\n”}'\ > output.bed
... (1 Reply)
Discussion started by: repinementer
1 Replies
5. UNIX for Dummies Questions & Answers
%%%%% (2 Replies)
Discussion started by: lucasvs
2 Replies
6. UNIX for Dummies Questions & Answers
If I don't explain my issue well enough, I apologize ahead of time, extreme newbie here to scripting.
I'm currently learning scripting from books and have moved on to the text Wicked Cool Shell Scripts by Dave Taylor, but there are still basic concepts that I'm having trouble understanding.
... (10 Replies)
Discussion started by: Chasman78
10 Replies
7. Shell Programming and Scripting
i am beginner in shell scripting.
not able to understand what below line will do.
PS1=${HOST:=´uname -n´}"$ " ; export PS1 HOST
below is the script
#!/bin/hash
PS1=${HOST:=´uname -n´}"$ " ; export PS1 HOST ;
echo $PS1
and i getting the below output
´uname -n´$ (25 Replies)
Discussion started by: scriptor
25 Replies
8. Shell Programming and Scripting
Hi
i was going through the script debugging technique. below example was given in the book.
1 #!/bin/sh
2
3 Failed() {
4 if ; then
5 echo "Failed. Exiting." ; exit 1 ;
6 fi
7 echo "Done."
8 }
9
10 echo "Deleting old backups,... (11 Replies)
Discussion started by: scriptor
11 Replies
9. Shell Programming and Scripting
Hello,
I want to find some keywords in a dd image.
I have created a keyword file (1.txt) and search the dd image using,
cat /media/sdb1/test/c.dd.001 | strings | egrep -i --color -f 1.txt
It works,
But how can I get the file name and path?
Many thanks. (7 Replies)
Discussion started by: yzy9951
7 Replies
10. UNIX for Dummies Questions & Answers
Hi everyone,
Can someone look this over?
find /oracle/diag/rdbms/*/*/trace -type f -name '*d00*.trc' -mtime 0 \
-exec egrep -c 'TNS-12535: TNS:operation timed out' '{}' '+' |
awk -F: '{print $1}' |
egrep -c '2015-01-22' usidp/trace/abcdef_d001_21751.trc:9 \... (1 Reply)
Discussion started by: bdby
1 Replies
LEARN ABOUT PLAN9
zipgrep
ZIPGREP(1) General Commands Manual ZIPGREP(1)
NAME
zipgrep - search files in a ZIP archive for lines matching a pattern
SYNOPSIS
zipgrep [egrep_options] pattern file[.zip] [file(s) ...] [-x xfile(s) ...]
DESCRIPTION
zipgrep will search files within a ZIP archive for lines matching the given string or pattern. zipgrep is a shell script and requires
egrep(1) and unzip(1) to function. Its output is identical to that of egrep(1).
ARGUMENTS
pattern
The pattern to be located within a ZIP archive. Any string or regular expression accepted by egrep(1) may be used. file[.zip] Path
of the ZIP archive. (Wildcard expressions for the ZIP archive name are not supported.) If the literal filename is not found, the
suffix .zip is appended. Note that self-extracting ZIP files are supported, as with any other ZIP archive; just specify the .exe
suffix (if any) explicitly.
[file(s)]
An optional list of archive members to be processed, separated by spaces. If no member files are specified, all members of the ZIP
archive are searched. Regular expressions (wildcards) may be used to match multiple members:
* matches a sequence of 0 or more characters
? matches exactly 1 character
[...] matches any single character found inside the brackets; ranges are specified by a beginning character, a hyphen, and an end-
ing character. If an exclamation point or a caret (`!' or `^') follows the left bracket, then the range of characters within
the brackets is complemented (that is, anything except the characters inside the brackets is considered a match).
(Be sure to quote any character that might otherwise be interpreted or modified by the operating system.)
[-x xfile(s)]
An optional list of archive members to be excluded from processing. Since wildcard characters match directory separators (`/'),
this option may be used to exclude any files that are in subdirectories. For example, ``zipgrep grumpy foo *.[ch] -x */*'' would
search for the string ``grumpy'' in all C source files in the main directory of the ``foo'' archive, but none in any subdirectories.
Without the -x option, all C source files in all directories within the zipfile would be searched.
OPTIONS
All options prior to the ZIP archive filename are passed to egrep(1).
SEE ALSO
egrep(1), unzip(1), zip(1), funzip(1), zipcloak(1), zipinfo(1), zipnote(1), zipsplit(1)
URL
The Info-ZIP home page is currently at
http://www.info-zip.org/pub/infozip/
or
ftp://ftp.info-zip.org/pub/infozip/ .
AUTHORS
zipgrep was written by Jean-loup Gailly.
Info-ZIP 20 April 2009 ZIPGREP(1)