I have a file, that has variations of this line multiple times:
source = "git::https://github.com/ORGNAME/REPONAME.git?ref=develop"
I am passing through a tag name in a variable. I want to find every line that starts with source and update that line in the file to be
source = "git::https://github.com/ORGNAME/REPONAME.git?ref=$TAG"
This should be able to be done with awk and sed, but having some difficulty making it work. Any help would be much appreciated!
Best,
Keren
Edit: In this scenario, the it says "develop", but it could also be set to "feature/test1" or "0.0.1" as well.
Edit2: The line with "source" is also indented by three or four spaces.
This should do:
sed 's/^\([[:blank:]]*source.*[?]ref=\)[^"]*\("\)/\1'"$TAG"'\2/' file
with sed
$ sed '/^source/s/ref=develop"$/ref=$TAG"/' file
replace ref=develop" at the end of line with ref=$TAG" for lines starting with source.
Related
I have a requirement to compare two text files and to find out the difference between them. Basically I have an input file (input.txt) which will be processed by a batch job and my batch will log the output (successful.txt) where the job has successfully ran.
In simple words, I need to find out the difference between input.txt and successful.txt (input.txt-successful.txt) and I was thinking to use findstr. It seems to be fine, BUT I don't understand one part of it. It always includes the last line of my input.txt in the output. You could see that in the example below. Please note that there is no leading space or line break after the last line of my input.txt.
In below example, you could see the line server1,db1 is present on both the files, but still listed in the output. (It is always the last line of input.txt)
D:\Scripts\dummy>type input.txt
server2,db2
server3,db3
server10,db10
server4,db4
server1,db11
server10,schema11
host1,sch2
host11,sql2
host11,sql3
server1,db1
D:\Scripts\dummy>type successful.txt
server1,db1
server2,db2
server3,db3
server4,db4
server10,db10
host1,sch2
host11,sql2
host11,sql3
D:\Scripts\dummy>findstr /vixg:successful.txt input.txt
server1,db11
server10,schema11
server1,db1
What am I doing wrong?
Cheers,
G
I could reproduce your results by removing the newline after the last line of input.txt, so solution 1 would be to add a newline to the end of input.txt. Since you appear to say that input.txt has no terminal newline, then adding one would cure the problem; findstr is acting as expected because it acts on newline-terminated lines.
Solution 2 would be
type input.txt|findstr /vixg:successful.txt
I am essentially trying to use sed to remove a few lines within a text document. To clean it up. But I'm not getting it right at all. Missing something and I have no idea what...
#!/bin/bash
items[0]='X-Received:'
items[1]='Path:'
items[2]='NNTP-Posting-Date:'
items[3]='Organization:'
items[4]='MIME-Version:'
items[5]='References:'
items[6]='In-Reply-To:'
items[7]='Message-ID:'
items[8]='Lines:'
items[9]='X-Trace:'
items[10]='X-Complaints-To:'
items[11]='X-DMCA-Complaints-To:'
items[12]='X-Abuse-and-DMCA-Info:'
items[13]='X-Postfilter:'
items[14]='Bytes:'
items[15]='X-Original-Bytes:'
items[16]='Content-Type:'
items[17]='Content-Transfer-Encoding:'
items[18]='Xref:'
for f in "${items[#]}"; do
sed '/${f}/d' "$1"
done
What I am thinking, incorrectly it seems, is that I can setup a for loop to check each item in the array that I want removed from the text file. But it's simply not working. Any idea. Sure this is basic and simple and yet I can't figure it out.
Thanks,
Marek
Much better to create a single sed script, rather than generate 19 small scripts in sequence.
Fortunately, generating a script by joining the array elements is moderately easy in Bash:
regex=$(printf '\|%s' "${items[#]}")
regex=${regex#'\|'}
sed "/^$regex/d" "$1"
(Notice also the addition of ^ to the final regex -- I assume you only want to match at beginning of line.)
Properly, you should not delete any lines from the message body, so the script should leave anything after the first empty line alone:
sed "1,/^\$/!b;/$regex/d" "$1"
Add -i if you want in-place editing of the target file.
I've researched other questions on here, but haven't really found one that works for me. I'm trying to select a specific line from a file and replace a string on that line with another string. So I have a file named my_course. I'm trying to modify a line in my_course that starts with "123". on that line I want to replace the string "0," with "1,". Help?
One possibility would be to use sed:
sed '/^123/ s/0/1/' my_course
In the first /../ part you just have to specify the pattern you are looking for ^123 for a line starting with 123.
In the s/from/to/ part you have specify the substitution to be performed.
Note that by default after substitution the file will be written to stdout. You might want to:
redirect the output using ... > my_new_course
perform the substitution "in place" using the -e switch to sed
If you are using the destructive in place variant you might want to use -iEXTENSION in addition to keep a copy with the given EXTENSION of the original version in case something goes wrong.
EDIT:
To match the desired lined with a prefix stored in a variable you have to enclose the sed script with double quotes " as using single qoutes ' will prevent variable expansion:
sed "/^$input/ s/0/1/" my_course
Have you tried this:
sed -e '[line]s/old_string/new_string/' my_course
PS: the [ ] shouldn't be used, is there just to make it clear that you should put the number right before the "s".
Cheers!
In fact, the -e in this case is not necessary, I can write just
sed '<line number>s/<old string>/<new string>/' my_course
This is what worked for me on Fedora 36, GNU bash, version 5.2.15(1)-release (x86_64-redhat-linux-gnu):
sed -i '1129s/additional/extra/' en-US/Design.xml
I know you said you couldn't use line numbers; I don't know how to address that part, but this replaced "additional" with "extra" on line 1129 of that file.
My file has a lot of line breaks, like this:
This is a line.
This is another line.
I would like to remove these, but only in cases where the first line ends with }, e.g.:
\macro{This is a line.}
This is another line.
That should become:
\macro{This is a line.}This is another line.
How can I remove the line breaks in this situation?
This is what I figured out:
$ sed -n '/}$/{h;:a;n;/^$\|}$/{H;$!ba};H;g;s#}\n*#}#g};p' input.txt
The idea behind is:
Accumulate all continuous empty lines and lines endswith '}'
Substitute }\n* with }
Last line needs special consideration.
You can just use an editor that support regular expressions and do a replace in your file. Replace:
}$\n\n
with
}
If you need to do it programmatically, the same principle applies (i.e. using regex for string replacement) but the actual answer will obviously depend on language/environment.
This might work for you:
sed '$!N;s/}\n$/}/;P;D' file
if there is white space involved, try:
sed '$!N;s/}\s*\n\s*$/}/;P;D' file
or more formally:
sed '$!N;s/}[[:space:]]*\n[[:space:]]*$/}/;P;D' file
i have a template, with a var LINK
and a data file, links.txt, with one url per line
how in bash i can substitute LINK with the content of links.txt?
if i do
#!/bin/bash
LINKS=$(cat links.txt)
sed "s/LINKS/$LINK/g" template.xml
two problem:
$LINKS has the content of links.txt without newline
sed: 1: "s/LINKS/http://test ...": bad flag in substitute command: '/'
sed is not escaping the // in the links.txt file
thanks
Use some better language instead. I'd write a solution for bash + awk... but that's simply too much effort to go into. (See http://www.gnu.org/manual/gawk/gawk.html#Getline_002fVariable_002fFile if you really want to do that)
Just use any language where you don't have to mix control and content text. For example in python:
#!/usr/bin/env python
links = open('links.txt').read()
template = open('template.xml').read()
print template.replace('LINKS', links)
Watch out if you're trying to force sed solution with some other separator - you'll get into the same problems unless you find something disallowed in urls (but are you verifying that?) If you don't, you already have another problem - links can contain < and > and break your xml.
You can do this using ed:
ed template.xml <<EOF
/LINKS/d
.r links.txt
w output.txt
EOF
The first command will go to the line
containing LINKS and delete it.
The second line will insert the
contents of links.txt on the current
line.
The third command will write the file
to output.txt (if you omit output.txt
the edits will be saved to
template.xml).
Try running sed twice. On the first run, replace / with \/. The second run will be the same as what you currently have.
The character following the 's' in the sed command ends up the separator, so you'll want to use a character that is not present in the value of $LINK. For example, you could try a comma:
sed "s,LINKS,${LINK}\n,g" template.xml
Note that I also added a \n to add an additional newline.
Another option is to escape the forward slashes in $LINK, possibly using sed. If you don't have guarantees about the characters in $LINK, this may be safer.