The probelm with a *${var}_* glob is that it is missing a leading anchor.
E.g. $var==2795 will match 002795_001.jpg and 012795_001.jpg
Reason enough to go for the less efficient but correct `ls | grep` and a ^0* anchor in the RE.
I was thinking that bash Extended globbing and nullglob could be the solution to this, without the efficiency hit:
However, this still ends up invoking sh and then bash, which is only slightly better than shls and grep. The complexity (all those backslashes!) and reliance on bash make this more an academic solution rather than something I'd be inclined to use in the real world.
This User Gave Thanks to Chubler_XL For This Post:
Hi,
I need a help in deleting a line matching a particular pattern in a file using shell script without opening the file. The file is a .c/.cpp file. Is it possible?
Thanks (6 Replies)
hi ,
i need a shell script that will remove the first and second lines of the text file
and will list the word count of the characters present in it.
the text file will be consisting of multiple textfiles.the first text file starts from
01-34.like wise the next file also starts from 01-34... (4 Replies)
Hi,
iam presenting the input text file format.Of this i need the character count of the number of characters present in each file.The attached file is a combination of 3 text file.each text file starts at record 1 - 34, then the next tetx file starts. What i need is the character count of each... (1 Reply)
Hi,
Can someone help me with this small piece of code.
DIRNAME=$(dirname $0)
BASENAME=$(basename $0)
DATA="${DIRNAME}/${BASENAME}.data"
&& . $DATA
whats is meant by && . $DATA here...
Regards,
Abhishek (2 Replies)
I searched the forum, but there was different type of rename.
Hello.
I have files in folder.
Like:
xxxxxxxx1.html
or
xxxxxxxx2.txt
or
xxxxxxxx3.tar.gz
and how to rename or change file extension case to
xxxxxxxx1.htm
or
xxxxxxx2.TXT
or (5 Replies)
hi,
I need some help in writing shell script in a bourne shell.I am trying to rename the file..
eg.
find /root/data -type f -name "text*) | while read FILES
do
newfile=${FILES/type_2.0_20101208_34.xml / tmp.xml}
mv "$FILES" "$newfile"
done
above written script is working...If the... (7 Replies)
Dear All
I have a filelisting as below:
abcd_20110715_0007
abcd_20110715_0010
abcd_20110716_0001
abcd_20110716_0004
abcd_20110715_0008
abcd_20110715_0011
abcd_20110716_0002
abcd_20110716_0005
abcd_20110715_0009
abcd_20110715_0012
abcd_20110716_0003
abcd_20110716_0006
... (3 Replies)
Hi,
My input file as follws
$ cat 1.txt
-------
a aa aaa 11
b bb bbb 22
I am able to extract first and last column of a given line as follows.
$ nawk '{print $1}' FS= RS= 1.txt | awk '{ $NF = ""; print }'
a
$ nawk '{print $1}' FS= RS= 1.txt | awk '{ print $NF}'
11
however, the... (4 Replies)
Hi,
I need shell script for getting the date in format from below text output
IP IS 10.238.52.65
pun-ras-bng-mhs-01#show conf port 2/4
Building configuration...
Current configuration:
!
card ge3-4-port 2
!
port ethernet 2/4
no shutdown
encapsulation dot1q (7 Replies)
Discussion started by: surender reddy
7 Replies
LEARN ABOUT DEBIAN
libbash
LIBBASH(7) libbash Manual LIBBASH(7)NAME
libbash -- A bash shared libraries package.
DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
want to load and use in scripts of your own.
It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.
Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded
using
ldbash(1) must answer 4 requirments:
1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).
2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library
exports. I.e. all the function that will be usable after loading that library will be listed in that line.
3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are
required for our library. I.e. every bash library that is in use in our bash library must be listed there.
4. The library must be listed (For more information, see ldbashconfig(8)).
Basic guidelines for writing library of your own:
1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions.
2. Try to declare all variables intended for internal use as local.
3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
__<library_name>_
For example, internal function myfoosort of hashstash library should be named as
__hashstash_myfoosort
This helps to avoid conflicts in global name space when using libraries that come from different vendors.
4. See html manual for full version of this guide.
AUTHORS
Hai Zaar <haizaar@haizaar.com>
Gil Ran <ril@ran4.net>
SEE ALSO ldbash(1), ldbashconfig(8), getopts(1), hashstash(1)colors(1)messages(1)urlcoding(1)locks(1)Linux Epoch Linux