02-13-2009
$0 is the string and also the positional parameter for the program being called.
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1. Shell Programming and Scripting
Is there a way to use metacharacters in a loop or in an if.
I want to allow a user to enter Y, y, Yes, yes, Yah, etc...
in a loop I tried:
read response
while *" ]
do........
and
while *" ]
do .........
this works for grep or egrep but not in loops
Why?????? (4 Replies)
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2. UNIX for Dummies Questions & Answers
I want to display an asterisk to the screen as part of a string. I know how to use the Backslash to escape it's value. But how do I display it without showing the Backslash? (1 Reply)
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3. Shell Programming and Scripting
Hello,
I have a question, please (I am using tcsh).
I thought that if you enclose something in double quotes, then the shell won't interpret it. For example, when I do:
% echo "ls *"
I get
ls *
However, if I do:
% echo "!l"
I get
echo "ls -F"
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4. Shell Programming and Scripting
I'm trying to create a bash script that takes a URL as one of its arguments like this:
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variable=$1
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5. Shell Programming and Scripting
If I have a filename as
filename.txt.20090807
and I use
for FILE in `find . -name "filename*" -type f`
do
my_time=${FILE#./filename.txt.}
I get my output as 20090807
However if my filename is
filename.Y20090807.txt
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Hello. I am learning how to use Unix through an online course. Unfortunately the text that we use isn't very good, so I could use some help with a pretty basic question.
Use metacharacters and the ll command to list all filenames under the datafiles directory that contain a dot "." with the... (2 Replies)
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Hi, all.
I have a need to take a flat file FTP'd from Windows to Unix and convert it for loading into a MySQL database without manual intervention. However, some characters are "fancified" (e.g. the fancy Beginning and End double-quotes from Windows) that show up as codes using vi. I need to... (4 Replies)
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8. Shell Programming and Scripting
I have prepared a script to submit a string in a txt file.
However there are somethings that I have to check before submitting the string in the txt file.
One of those checks is to determine whether the string entered contains any metacharacters.
I have tried sth like;
echo "string" | grep -v ... (3 Replies)
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so I came up with this
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I am currently reading a very old reference from O'Reilly: Sed and Awk 2nd Edition reprinted in 2000. So far, it's a solid read and still very relevant. I'd highly recommend this to anyone.
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LEARN ABOUT DEBIAN
dh_installdeb
DH_INSTALLDEB(1) Debhelper DH_INSTALLDEB(1)
NAME
dh_installdeb - install files into the DEBIAN directory
SYNOPSIS
dh_installdeb [debhelperoptions]
DESCRIPTION
dh_installdeb is a debhelper program that is responsible for installing files into the DEBIAN directories in package build directories with
the correct permissions.
FILES
package.postinst
package.preinst
package.postrm
package.prerm
These maintainer scripts are installed into the DEBIAN directory.
Inside the scripts, the token #DEBHELPER# is replaced with shell script snippets generated by other debhelper commands.
package.triggers
package.shlibs
These control files are installed into the DEBIAN directory.
package.conffiles
This control file will be installed into the DEBIAN directory.
In v3 compatibility mode and higher, all files in the etc/ directory in a package will automatically be flagged as conffiles by this
program, so there is no need to list them manually here.
package.maintscript
Lines in this file correspond to dpkg-maintscript-helper(1) commands and parameters. Any shell metacharacters will be escaped, so
arbitrary shell code cannot be inserted here. For example, a line such as "mv_conffile /etc/oldconffile /etc/newconffile" will insert
maintainer script snippets into all maintainer scripts sufficient to move that conffile.
A versioned Pre-Dependency on dpkg is needed to use dpkg-maintscript-helper(1). An appropriate Pre-Dependency is set in
${misc:Pre-Depends} ; you should make sure to put that token into an appropriate place in your debian/control file.
SEE ALSO
debhelper(7)
This program is a part of debhelper.
AUTHOR
Joey Hess <joeyh@debian.org>
9.20120909 2011-09-12 DH_INSTALLDEB(1)