Hi,
I'm trying to do the following , I have certain variables in a file and then I want to check for these variables in a certain cobol file to see if they contain a certain package if so replace them with value 1 but but that last line is giving problems:
# for each variable in SQL file
... (1 Reply)
Hi guys,
I want to replace certain values with the number 1.
But it is also replacing other values which contain the value I want to replace. e.g.:
I want to replace ID-INTERNAL with 1, that's no problem but it will also replace ID-INTERNAL-NON-REM with 1-NON-REM
I don't want to... (10 Replies)
when i do something like substituting a particular thing with a system variable, i am unable to do that expect the varible name getting into that.
for ex.. i tried,
sed -e 's/date/`date`/g' <if >of
but i got date replaced with "`date`" and not with the actual date ..
same case happened... (5 Replies)
Hi,
I'm trying to use sed to delete the last three lines of a file. I currently have:
# get the amount of lines in the file
foldernum=`wc -l File_In.txt | cut -c1-8`
# remove the lines in the file
sed "${foldernum}-3,${foldernum}d" File_In.txt > File_Out.txt
I get the error - sed:... (5 Replies)
HELP!!!
I'm keep getting "sed: Function s/PETS/dog cannot be parsed."
I have 2 files that list...
# cat FILE1.txt
dog
cat
mouse
# cat FILE2.txt
my pets are
PETS
I put this into a variable...
# A=`cat FILE1.txt`
# sed "s/PETS/$A" FILE2.txt > FILE3.txt (5 Replies)
I'm trying to get sed to cut and replace using variables, but it doesnt seem to work, when I run this the mod time of the file does get updated. Is my syntax incorrect in the sed command?
Thanks
#!/usr/bin/ksh
#Modify header
set -x
HEAD=$(cat PBN2CPR1.TXT | awk 'BEGIN { FS = ","... (1 Reply)
Hi,
I am able to use sed if I hardcode the find and replace values in a shell script.
This works:
sed -e 's/123v/4567/g' /path/aaa.txt
> /path/aaa.txt.tmp
If I use a variable, I am not able to use sed command. why?
This doesnot work:
i=abc
j=bk${i}
sed -e 's/${i}/${j}/g'... (5 Replies)
All
I am trying to produce the following in /etc/ssh/sshd_config,
# IPv4 only
#ListenAddress 0.0.0.0
# IPv4 & IPv6
ListenAddress ::
to
# IPv4 only
ListenAddress <user-entry>
ListenAddress <user-entry>
# IPv4 & IPv6
#ListenAddress ::
The number of user entries can vary.
... (1 Reply)
Im trying to use sed to print value that matches the value in variable and all lines after that.
grep "Something" test.txt | sed -e '/{$variable}/,$b' -e 'd'
I cant get it work, if I replace the $variable with the value it contains, it works fine... (10 Replies)
Discussion started by: olkkis
10 Replies
LEARN ABOUT DEBIAN
dpkg::substvars
Dpkg::Substvars(3) libdpkg-perl Dpkg::Substvars(3)NAME
Dpkg::Substvars - handle variable substitution in strings
DESCRIPTION
It provides some an object which is able to substitute variables in strings.
METHODS
my $s = Dpkg::Substvars->new($file)
Create a new object that can do substitutions. By default it contains generic substitutions like ${Newline}, ${Space}, ${Tab},
${dpkg:Version} and ${dpkg:Upstream-Version}.
Additional substitutions will be read from the $file passed as parameter.
It keeps track of which substitutions were actually used (only counting substvars(), not get()), and warns about unused substvars
when asked to. The substitutions that are always present are not included in these warnings.
$s->set($key, $value)
Add/replace a substitution.
$s->set_as_used($key, $value)
Add/replace a substitution and mark it as used (no warnings will be produced even if unused).
$s->get($key)
Get the value of a given substitution.
$s->delete($key)
Remove a given substitution.
$s->mark_as_used($key)
Prevents warnings about a unused substitution, for example if it is provided by default.
$s->no_warn($key)
Obsolete function, use mark_as_used() instead.
$s->load($file)
Add new substitutions read from $file.
$s->parse($fh, $desc)
Add new substitutions read from the filehandle. $desc is used to identify the filehandle in error messages.
$s->set_version_substvars($sourceversion, $binaryversion)
Defines ${binary:Version}, ${source:Version} and ${source:Upstream-Version} based on the given version strings.
These will never be warned about when unused.
$s->set_arch_substvars()
Defines architecture variables: ${Arch}.
This will never be warned about when unused.
$newstring = $s->substvars($string)
Substitutes variables in $string and return the result in $newstring.
$s->warn_about_unused()
Issues warning about any variables that were set, but not used
$s->set_msg_prefix($prefix)
Define a prefix displayed before all warnings/error messages output by the module.
$s->save($file)
Store all substitutions variables except the automatic ones in the indicated file.
"$s" Return a string representation of all substitutions variables except the automatic ones.
$str = $s->output($fh)
Print all substitutions variables except the automatic ones in the filehandle and return the content written.
AUTHOR
Raphael Hertzog <hertzog@debian.org>.
1.16.15 2014-06-05 Dpkg::Substvars(3)