|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
sed variable expansion fails for substitution in range
Post 302889794 by larrl on Monday 24th of February 2014 01:27:00 AM
02-24-2014
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem.
my var1 is a string constructed like this:
filename1 filerev1 filepath1
my var2 is another string constructed like this:
filename2 filerev2 filepath2
when i do... (2 Replies)
Discussion started by: alrinno
2 Replies
2. Shell Programming and Scripting
Hi Chaps...
I have a log file as below:-
01 Oct 2009 12:57:56 DEBUG :
01 Oct 2009 12:14:21 DEBUG :.....
.
.
.
.05 Oct 2009 14:31:56 DEBUG :....
.
.
.05 Oct 2009 12:57:56 DEBUG :....
06 Oct 2009 01:23:11 DEBUG :....
.
.
.06 Oct 2009 12:53:46 DEBUG :.... (4 Replies)
Discussion started by: rpraharaj84
4 Replies
3. UNIX for Dummies Questions & Answers
I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename?
#!/bin/bash
filename=`echo $0`
/usr/bin/sed '/#include/ {
i\
the filename is `$filename`
}' $1
exit 0 (8 Replies)
Discussion started by: glev2005
8 Replies
4. Shell Programming and Scripting
Hello All,
I don't write scripts very often, and in this case I am stumped, although it may be a bug in the version of bash I have to use (it's not my system).
I want to extract a specific string snippet from a block of text (coming from a log file) that is dependent on a bunch of other... (1 Reply)
Discussion started by: jaimielives
1 Replies
5. Shell Programming and Scripting
Hello, I searched the forum and unable to find a solution for my particular problem. I have a text file I'm trying to insert some text using sed after finding a pattern..
File contains in one line
Invoice date: xx/xx/xxxx Balance: $$$$ Name: xxxxxxxxxxxxxx
Trying to insert Invoice "Number:... (3 Replies)
Discussion started by: mallu0987
3 Replies
6. Shell Programming and Scripting
The objective of the code below is to create sed script to be later executed. However, it bonks because $ARCHIVENAME expands to a directory specification so the forward slashes cause problems. I can think of a few solutions that would involve redesigning the process, but I'm hoping there might be... (4 Replies)
Discussion started by: tiggyboo
4 Replies
7. Shell Programming and Scripting
Problem with the code below is that the value of the variable is not getting substituted in the sed expression.
#/bin/csh
set UNIX_ID="rajibd"
set X_ID="xrajibd"
sed -n 's/$UNIX_ID/$X_ID/g' passwd
When run , it is not giving expected output as shown below :
... (4 Replies)
Discussion started by: hiten.r.chauhan
4 Replies
8. Shell Programming and Scripting
The following is part of a larger project and sed is (right now) a given. I am working on a recursive Korn shell function to "peel off" XML tags from a larger text. Just for context i will show the complete function (not working right now) here:
function pGetXML
{
typeset chTag="$1"
typeset... (5 Replies)
Discussion started by: bakunin
5 Replies
9. Shell Programming and Scripting
Hi,
at academic level I am familiar with how variable substitution/expansion feature works. From your live experience, can you please tell what are real-time scenarios where ${variable:=} ${variable%pattern} ${variable:=word} sort of features can be used? How can we connect that dot that... (6 Replies)
Discussion started by: ab_2010
6 Replies
10. Shell Programming and Scripting
I am unable to expand the value of entry variable inside the nawk command.
I tried three different nawk command as below but none of them substitute the value of entry variable.
ls *.txt | while IFS='' read -r entry; do
#nawk '/<name>/{A=1;++i} A{print >> ("cmd"i"_"$entry)}... (9 Replies)
Discussion started by: mohtashims
9 Replies
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)