I need to assign a variable within a variable in a sed command.
I tried doing the following in c shell.
set left = 1
set right = 2
set segment = qwerty
sed -n -e "/$segment{$left}/,/$segment{$right}/p" file.txt
what is wrong with this syntax? (3 Replies)
I am trying to write a simple script which will take a variable with sed to take a line out of a text and display it
#!/bin/sh
exec 3<list
while read list<&3
do
echo $list
sed -n '$list p'<list2
done
this does not work, yet when I replace the $list variable from the sed command and... (1 Reply)
I want to write a sed command that does the following work:
file: <a>asdfasdf<\s>
<line>hello</line>
<b>adf<\c>
<b>tttttttt<\c>
output:
name=hello
sed -e 's/^*//' -n -e '/<line>/s/<*>//gp;' -e 's/^/name="/g' file
but I can not append "=" after getting the line with... (5 Replies)
I wish to give line number from one point to another in sed command like this
sed -n 1,1000000p file1.txt >file2.txt
but variable line number $x,$x+100000 can i give it cos i tried and it was giving an error any suggestions?/
Thx in advance
AC (2 Replies)
I have got a file job_tree.lst , which contains 1 line as below
$ cat job_tree.lst
ABC_D_EQ_XXXXX_YYYY_PRD_UX 05/08/2009 05:47 05/08/2009 05:50 IN 13412850/0
I want to get a child job string 3 characters offset from the parent job string (i.e. ABC_D_EQ_XXXXX_YYYY_PRD_UX 05/08/2009... (4 Replies)
Hi all,
I want write a script to display 5rows at times from a input file.
my out like:
echo " display started"
r1
r2
r3
r4
r5
... Some action items...
again i need next 5 lines.
can you please advise. (2 Replies)
Hi All,
I have a file where I am converting newlines to comma separated values but I would like to append zero if the output is empty
Here is the command I am using
sed -n -e 'H;${x;s/\n/,/g;s/^,//;p;}' test1.txt
test1.txt will have comma seperated values but sometimes this file can be... (6 Replies)
hello Team,
I am looking for sed command or script which will append word at end of line. for example. I want to validate particular filesystem with mount |<filesystem name> command. if nodev parameter is not there then it should add in the fstab file with receptive to the filesystem.
# mount... (8 Replies)
Here is the whole script, very simple, but I am just learning
ROK_NO=$1
RPT=/tmp/test
sed -E '/^SELECT/ s/(.{23}).{8}/\1'"$ROK_NO"' /' $RPT
echo $RPT
When I run this I get
$ bash rok.sh 2388085
: No such file or directory
/tmp/test
When I type the command in console, it works... (3 Replies)
Discussion started by: isey78
3 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)
01-15-2013
