You don't need sed for this:
When using sed, you should not use the substitution command's global flag, g, when your intent is to modify only a single occurrence of the pattern.
If it were at all possible that the portion of the filename matched by the wildcard, *, could contain "S9" or "fa", you'd need to be much more careful. Beyond dropping the global flag, to ensure that only the file extension suffix matches, you would need to anchor that pattern to the end of the string.
Since the file glob in the for-loop list has already constrained the matching filename to begin with S9 and end with .fa, the correct sed command doesn't have to bother being specific: sed 's/^/CGW-/; s/$/sta/'. If that file glob were not present, then the following could be used: sed '/^S9.*\.fa$/{s/^/CGW-/; s/$/sta/;}'.
Hi
I have the following file that i need to run a sed command on
1<tab>running
2<tab>running
3<tab>running
4<tab>running
I want to be able to replace a line i.e the second one with '2<tab>failed'. As the first number is unique that can be used to search for the relevant line (using ^2 i... (5 Replies)
My egrep outputs this:
$ cat html.out|sed -n '/bluetext/s/ / /gp'|egrep '{5}'
<span class="bluetext"><b> Lexington Park, MD 20653</b></span>
But my backreference \1 is empty. I dont understand why. Can someone clarify?
$ cat html.out|sed -n '/bluetext/s/ / /gp'|sed -n... (1 Reply)
Hello
I have a bash script where I need to do a substring replacement like this:
variable2=${variable1/foo/bar}
However, I only want "foo" replaced if it is at the end of the line.
However, this does not work:
variable2=${variable1/foo$/bar}
as you can see I'm using the $ regex for... (2 Replies)
This seems like it should be an easy problem, but I'm a noob and I can't figure it out. I'm trying to use sed, but would be happy to use anything that does the job.
I am trying to trim off a fixed number of unknown characters from 2 different : delimited fields while keeping the intervening... (4 Replies)
I am trying to replace the line which has string "tablespace" not case senstive....
with below simple script: mysrcipt.sh
sed "s/.*/TABLESPACE USERS/g" create_table > tmp
mv tmp create_table
Is there any better way to do it? If Search string tooooooo long it will be tough to code in... (4 Replies)
I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly:
if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Hi,
I need to use the regex in the replacement string in SED command.
something like
sed -e ' s/\(^\{5\}\).\{150\}\(.*\)$/\10\{30\}1\{30\}A\{60\}B\{30\}\2/' abc
which means for all the lines in file abc that starts with 5 characters, I need to replace character 6-151... (6 Replies)
Hello to all,
I have this sed script that replaces hex strins within a binary file.
As you can see, I want to replace all bytes 4X with 2X (where X could take values 0 to F).
sed -e 's/\x40/\x20/g' -e 's/\x41/\x21/g' -e 's/\x42/\x22/g' -e 's/\x43/\x23/g' -e 's/\x44/\x24/g' -e... (7 Replies)
Hi,
I'm using /bin/sh
I would appreciate if someone could help me with SED syntax for a "simple" line.
Here is where I Got to:
I have these strings that are returned by my(Examples) (naturally "FullPath" is always changing don't hardcode this lol)
FullPath/AAA.framework... (3 Replies)
I have some text like
EU1BTDAT:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1BTDATEST:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1CLOSEDATES:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1DATED:ASSGNDD... (8 Replies)
Discussion started by: gotamp
8 Replies
LEARN ABOUT LINUX
re_exec
RE_COMP(3) Linux Programmer's Manual RE_COMP(3)NAME
re_comp, re_exec - BSD regex functions
SYNOPSIS
#define _REGEX_RE_COMP
#include <sys/types.h>
#include <regex.h>
char *re_comp(char *regex);
int re_exec(char *string);
DESCRIPTION
re_comp() is used to compile the null-terminated regular expression pointed to by regex. The compiled pattern occupies a static area, the
pattern buffer, which is overwritten by subsequent use of re_comp(). If regex is NULL, no operation is performed and the pattern buffer's
contents are not altered.
re_exec() is used to assess whether the null-terminated string pointed to by string matches the previously compiled regex.
RETURN VALUE
re_comp() returns NULL on successful compilation of regex otherwise it returns a pointer to an appropriate error message.
re_exec() returns 1 for a successful match, zero for failure.
CONFORMING TO
4.3BSD.
NOTES
These functions are obsolete; the functions documented in regcomp(3) should be used instead.
SEE ALSO regcomp(3), regex(7), GNU regex manual
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 1995-07-14 RE_COMP(3)