sed Ampersand Post: 302872621

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1. UNIX for Dummies Questions & Answers

ampersand

What is the & for in Unix?? say for example that you have a line in a shellscript that will startup a executable and you have the ampersand at the end of the line, what is it for?? any info you could spare would be much appreciated thanks in advance

2. Programming

The Ampersand

In my program, I'm using argc and argv to accept command line arguments. However, if I have to get the '&' to work i.e. make it run the child as a background process, do I have to write some special code in C or does Unix handle it automatically? If I have to add the special code, how does it look...

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mailx - mail ti ids containing ampersand

Hi I am trying to send mail to an email id having ampersand in it. Like abc.&.xyz@abc.com But it is not being sent. I also tried prefixing backslash before and after ampersand Need Help:(

4. Shell Programming and Scripting

Understanding ampersand (&) usage in the command

Please explain the usage of ampersand in the following command who & echo "Total number of users are `who|wc -l`" What I understand is that ampersand is used to run some process in the background. And, what I am expecting from this command is "Output of who should be displayed on the...

5. UNIX for Dummies Questions & Answers

Ampersand usage and Emacs

In the terminal, using the ampersand allows the process to run in the background--Emacs, for example. But is there a way to automatically open Emacs as a background process so I can still use the command line? Typing the ampersand is just annoying to me, and I keep forgetting; it's just too useful...

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Help with using lynx/wget/curl when a link has an ampersand

Hi, for my own interest I want to scrape a lot of data off the Maple Story game rankings page. The problem is, when I want to get the data at this page maplestory(dot)nexon(dot)net/Rankings/OverallRanking.aspx?type=overall&s=&world=0&job=0&pageIndex=6 It gives me the data at this page ...

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Cannot get literal ampersand to display in SQL output

Gurus, Thanks so much for your help, in advance. I'm using ksh and outputting a literal string value to an output file, however, Unix isn't playing by SQL's rules. The ampersand character which I'm trying to disply as a knowledge base link is screwing up the output. Typically, the "&&" is...

8. Shell Programming and Scripting

Problems with ampersand (&) in sed command

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Gawk Escaping Ampersand

I would like to open a text m3u file and add the same string to the beginning of each line. I think I am close, but I cannot figure out how to escape the ampersand in the following code: gawk-3.1.6.exe "{print /var/media/Music2.0TB2.1USB/Audio Files/Music/Rock & Roll/ $0}" "L:\Music\Rock &...

10. Red Hat

Nohup with ampersand & process gets disconnected

For years I have spawned shell scripts with nohup and ampersand and they run whether or not I stay logged in. Recently a client told us that we had to set a keep alive timeout on all of our Redhat 7.6 Linux servers. Our sysadmin set the following parameters in the sshd_config file on all of our...

LEARN ABOUT LINUX

shtool-subst

SHTOOL-SUBST.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-SUBST.TMP(1)

NAME

       shtool-subst - GNU shtool sed(1) substitution operations

SYNOPSIS

       shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
       [-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]

DESCRIPTION

       This command applies one or more sed(1) substitution operations to stdin or any number of files.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -n, --nop
	   No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.

       -w, --warning
	   Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
	   operations resulted in no content change on all files.

       -q, --quiet
	   Suppress warning on substitution operation resulting in no content change.

       -s, --stealth
	   Stealth operation. Preserve timestamp on file.

       -i, --interactive
	   Enter interactive mode where the user has to approve each operation.

       -b, --backup ext
	   Preserve backup of original file using file name extension ext.  Default is to overwrite the original file.

       -e, --exec cmd
	   Specify sed(1) command directly.

       -f, --file cmd-file
	   Read sed(1) command from file.

EXAMPLE

	#   shell script
	shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]

	#    RPM spec-file
	%install
	    shtool subst -v -n 
		-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g' 
		-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g' 
		`find . -name Makefile -print`
	    make install

HISTORY

       The GNU shtool subst command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 2001 for GNU shtool.  It was prompted
       by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.

SEE ALSO

       shtool(1), sed(1).

18-Jul-2008							   shtool 2.0.8 					       SHTOOL-SUBST.TMP(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

ampersand

Discussion started by: eloquent99

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The Ampersand

Discussion started by: Legend986

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mailx - mail ti ids containing ampersand

Discussion started by: aniruddha.saha

4. Shell Programming and Scripting

Understanding ampersand (&) usage in the command

Discussion started by: Shan_u2005