03-21-2005
if you want to replace more than once you could add the 'g', but it this case there is only one end of line ($) per line so that was not necessary to add g unless you want to replace a lot of 'M's on the same line
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
HI
I want to round off an integer to the next multiple of 10 in shell script.
(i.e.,) 91 should be rounded off to 100
and 90 should be rounded off to 90
It would be very helpful, if you can help me in this.
Thanks in advance (4 Replies)
Discussion started by: dayamatrix
4 Replies
2. Shell Programming and Scripting
Hello, I am creating a script that gives me system load info when i start a shell or log in via ssh(in the /etc/profile.d/ folder).
I created it successfully for bash and want it to work with c-shell as well.
This is where i'm having problems, the integer test in the if sentence does not work... (3 Replies)
Discussion started by: str1fe
3 Replies
3. Shell Programming and Scripting
Folks
Appreciate your help in understanding issue in relation to below.
I need to pul uvalue from a file (tmpfile) and compare it with a number to make decision.
Using #!/bin/sh
contents of tmpfile :
Slot uvalue : 0.16
How I am pulling it:
unifval=`awk '/uvalue/ {print $4}' tmpfile` ... (1 Reply)
Discussion started by: wndgs
1 Replies
4. Shell Programming and Scripting
Hi fellows!!
i'm doing something which is not working out for me properly which i don't understand why
nowdate=`date +%s`
echo $nowdate
now the problem how to convert a date which is stored in a variable
mydate="22/Oct/2011"
mydate=`date -d '$mydate' +%s`
it gives error... (11 Replies)
Discussion started by: me_newbie
11 Replies
5. Shell Programming and Scripting
hi,
how to I do this?
i="4.000"
if ; then
echo "smaller"
fi
how do I convert the "4.000" to 4?
Thanks! (4 Replies)
Discussion started by: h0ujun
4 Replies
6. Shell Programming and Scripting
Help. My script is working fine when executed manually but the cron seems not to catch up the command when registered.
The script is as follow:
#!/bin/sh
for file in file_1.txt file_2.txt file_3.txt
do
awk '{ print "0" }' $file > tmp.tmp
mv tmp.tmp $file
done
And the cron... (2 Replies)
Discussion started by: jasperux
2 Replies
7. Red Hat
Hi Team
we have created a DNS server at RHEL6.2 environment in 10.20.203.x/24 network.
Everything is going well on linux client as nslookup, ping by host etc in entire subnet. We are getting problem in windows client as nslookup working as well but not ping. all the firewall is disabled and... (5 Replies)
Discussion started by: boby.kumar
5 Replies
8. Shell Programming and Scripting
I am trying to automate a script where I need to use pbrun /bin/su but for some reason it is not passing thru the pbrun as my code below.
. ~/.bash_profile
pbrun /bin/su - content
c h 1
hpsvn up file path
I am executing this from an external .sh file that is pointing to this scripts file... (14 Replies)
Discussion started by: jorgejac
14 Replies
9. Shell Programming and Scripting
Hello, Newbie here,
I have a perfectly well working web service call I can issue from chrome (PC Windows 10) and get the results I want (a dimmer being turned on in Fibaro Home Center 2 at level 40)
I am not allowed to post urls but the below works with http and :// and... (3 Replies)
Discussion started by: abigbear
3 Replies
10. Shell Programming and Scripting
Hi Team,
I have written the shell script which returns the result of the disk space filesystems which has crossed the threshold limit in HTML Format. Below mentioned is the script which worked perfectly on QA system.
df -h | awk -v host=`hostname` '
BEGIN {
print "<table border="4"... (13 Replies)
Discussion started by: Harihsun
13 Replies
LEARN ABOUT CENTOS
wrjpgcom
WRJPGCOM(1) General Commands Manual WRJPGCOM(1)
NAME
wrjpgcom - insert text comments into a JPEG file
SYNOPSIS
wrjpgcom [ -replace ] [ -comment text ] [ -cfile name ] [ filename ]
DESCRIPTION
wrjpgcom reads the named JPEG/JFIF file, or the standard input if no file is named, and generates a new JPEG/JFIF file on standard output.
A comment block is added to the file.
The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. Although the standard doesn't actually define what COM blocks
are for, they are widely used to hold user-supplied text strings. This lets you add annotations, titles, index terms, etc to your JPEG
files, and later retrieve them as text. COM blocks do not interfere with the image stored in the JPEG file. The maximum size of a COM
block is 64K, but you can have as many of them as you like in one JPEG file.
wrjpgcom adds a COM block, containing text you provide, to a JPEG file. Ordinarily, the COM block is added after any existing COM blocks;
but you can delete the old COM blocks if you wish.
OPTIONS
Switch names may be abbreviated, and are not case sensitive.
-replace
Delete any existing COM blocks from the file.
-comment text
Supply text for new COM block on command line.
-cfile name
Read text for new COM block from named file.
If you have only one line of comment text to add, you can provide it on the command line with -comment. The comment text must be sur-
rounded with quotes so that it is treated as a single argument. Longer comments can be read from a text file.
If you give neither -comment nor -cfile, then wrjpgcom will read the comment text from standard input. (In this case an input image file
name MUST be supplied, so that the source JPEG file comes from somewhere else.) You can enter multiple lines, up to 64KB worth. Type an
end-of-file indicator (usually control-D) to terminate the comment text entry.
wrjpgcom will not add a COM block if the provided comment string is empty. Therefore -replace -comment "" can be used to delete all COM
blocks from a file.
EXAMPLES
Add a short comment to in.jpg, producing out.jpg:
wrjpgcom -c "View of my back yard" in.jpg > out.jpg
Attach a long comment previously stored in comment.txt:
wrjpgcom in.jpg < comment.txt > out.jpg
or equivalently
wrjpgcom -cfile comment.txt < in.jpg > out.jpg
SEE ALSO
cjpeg(1), djpeg(1), jpegtran(1), rdjpgcom(1)
AUTHOR
Independent JPEG Group
15 June 1995 WRJPGCOM(1)