Expand an environment variable in sed, when the variable contains a slash
I'm trying to make a sed substitution where the substitution pattern is an environment variable to be expanded, but the variable contains a "slash".
This gives me the following error:
Obviously this is because of the slashes in the HOME variable. How do I get around this problem?
$ . oraenv (when i type this at the prompt)
ORACLE_SID = ? ( I get this)
I understand that . oraenv is a startup script and it has the ENV variable ORACLE_SID.
But pls let me know what more it explains and also how to change the env variable here. (2 Replies)
Can I sed on an environment variable, even if I don't need to actually change said (hah, hah) variable? Something like:
sed s/xyz/abc/g $myvar
Then if I did need to change $myvar I could maybe do:
$myvar=`sed s/xyz/abc/g $myvar` (3 Replies)
Hi,
Can you tell me how to escape a variable number of slash characters in sed "/" ?
In the script the code looks like this:
cat $file_to_update | sed s/^$param/$param=$tab2*\#\*/1
And the $tab2 value is a path so it will have a number of "/" charracters.
# cat db.cfg | sed... (4 Replies)
Hello,
i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem.
my var1 is a string constructed like this:
filename1 filerev1 filepath1
my var2 is another string constructed like this:
filename2 filerev2 filepath2
when i do... (2 Replies)
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
Hi all,
I need to know way of inserting backward slash before forward slash. My problem is that i need to supply directory path as an argument while invoking cshell script. This argument is further used in script (i.e. sed is used to insert this path in some file). So i need to place \ in front... (2 Replies)
Hi!
Ok, so I'm no programmer and I have basically no experience in these stuff. However I need to work on a thing (I think you call it Framework) called Root. It's a tool used by physicists. In the manual they keep talking about Environment variable. Even thou I searched for what it is on the... (5 Replies)
Hi All,
I am new to SUN Solaris.I have some questions regarding environment variable.:confused:
Q1. Where the environment variables available in Solaris.
Q2. What command used here.
Q3. Can a user change this .Suppose i want to change the bash to ksh can it be possible here. Or i need to... (2 Replies)
Hi all,
Hereby wish to have your advise for below:
Main concept is
I intend to get current directory of my script file.
This script file will be copied to /etc/init.d.
A string in this copy will be replaced with current directory value.
Below is original script file:
... (6 Replies)
Dear Forum members,
I am having trouble getting the complete filename (and directory path) in a variable.
Output directory mentioned in the code have three files:
DISPLAY_CITY_DETAILS_15-05-2019-08-29-26_MIGRATE_london.out
DISPLAY_CITY_DETAILS_15-05-2019-08-29-26_MIGRATE_paris.out... (4 Replies)
Discussion started by: chetanojha
4 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)