sed processes files line-by-line - the 'g' option refers to instances of the pattern on the addressed line(s), not the whole file.
If you want to restrict the substitution to parts of the input file you'll need to supply an address, e.g.:
(addresses from line 0 to the first instance of abc)
Hello.
Consider the following magic words:
# ls `which adduser`
ls: /usr/sbin/adduser: No such file or directory
#
Hmmm...
Then:
# ls /usr/sbin/adduser
/usr/sbin/adduser
#
Now what?
Unforunately this little sniippet is used in my debian woody server's mysql pre install script.... (2 Replies)
Hi,
I use the command
ls a\b\c\*.txt
from the command line on HP UNIX and it works fine - It lists all files matching *.txt in the a\b\c directory
When embeded in a ksh script
`ls a\b\c\*.txt`
it does not work - I get *.txt not found (even though there are files)
I tried... (10 Replies)
Portion of my script below :
if ; then
NUMBEROFFEILDS=`cat ${BASE_SCRIPT_LOC}/standardfilecleanup.lst|grep -w ${db_file_path}|awk -F: '{print NF}'`
COUNT=4
while ; do
awk_var="$"`echo $COUNT`
file_name1=`cat ${BASE_SCRIPT_LOC}/standardfilecleanup.lst|grep -w... (1 Reply)
I am trying to find only those entries where 7018 and another number appear in the end of the line.
7018 2828 1423 2351
7018 2828 14887
2828 7018 1222
123 7018 1487
I am looking for a way to generate only the last two lines. I was trying to do just "grep '7018{1,5}" but it does not... (5 Replies)
Hi!
Been working on a script and I've been having a problem. I've finally narrowed it down to this variable I'm setting:
servername=$(awk -v FS=\/ '{ print $7 } blah.txt | sed 's\/./-/g' | awk -v FS=\- '{print $1}')"
This will essentially pare down a line like this:
... (7 Replies)
I need to sort through a volume that contains video files by access time and delete files that have not been accessed over x days. I have to use the access time as video files are originals that do not get modified, just read
Testing commands on a local test folder...
$ date
Wed Sep 28... (10 Replies)
Hi. I am trying to start a script on my router that will execute even if i log off. To execute the script I write:
nohup ./dslconnection > dslstat.out 2>&1 &
It starts the job:
21968 admin 1604 S /bin/ash ./dslconnection
The problem is that when I log back in the job has been... (6 Replies)
Hi,
I have prepared a script and trying to execute it but not getting expected output. Could you please help and advise what is going wrong.
"If else" part in below script is not working basically.
I am running it on HP-UX.
for i in slpd puma sfmdb
do
echo "******\t$i\t*******"
echo... (10 Replies)
I ran into the following and still do not understand entirely the rationale behind this. If someone could explain why things are as they are I'd be thankful.
The following was tested on AIX 7.1 with ksh88, but i suspect that to be ubiquitous. In an installation routine i had to create a set of... (6 Replies)
Discussion started by: bakunin
6 Replies
LEARN ABOUT DEBIAN
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)