Aia, while you point out good practice concerning this (and thanks, indeed), Don seems to be hinting at something much more. Still trying to get a grip on this stuff...
Along those lines, I discovered the need for sed to use "" in the context of passing strings (variable expansion) a couple of turns back. I did have some initial reservations about EOL delimiter usage in that context, until I realized that the $ would always find itself next to /; thereby providing a marker for sed to make the correct implementation. So far, so good.
But I can't even begin to imagine how the internal code would look to allow all of these variants,
Code:
sed -i 's/\${HOUSING}/casing/g' ./some.file
sed -i s'/\${HOUSING}/casing/g' ./some.file
sed -i s'/\${HOUSING}'/casing/g ./some.file
sed -i s/'\${HOUSING}/casi'ng/g ./some.file
sed -i 's'/'\${'HOUSING'}'/'casing'/'g' ./some.file
to function without any variation whatsoever...
You're missing the point. With all of the above command lines, sed gets exactly the same four arguments: sed, -i, s/\${HOUSING}/casing/g, and ./some.file.
The quote processing is done by the shell before it invokes sed.
This User Gave Thanks to Don Cragun For This Post:
Write a sed script to extract the year, rank, and stock for the most recent 10 years available in the file top10_mktval.csv, and output in the following format:
------------------------------
YEAR |RANK| STOCK
------------------------------
2007 | 1 | Exxon... (1 Reply)
Hello and thx for reading this
I'm using sed to remove only the leading spaces in a file
bash-280R# cat foofile
some text
some text
some text
some text
some text
bash-280R#
bash-280R# sed 's/^ *//' foofile > foofile.use
bash-280R# cat foofile.use
some text
some text
some text... (6 Replies)
i made a script to update a lot of xml files. to save me some time. Ran it and it replaced all the the files with a 0kb file. The problem i was having is that I am using sed to change xml node <doc_root>. The problem with this is it has a / in the closing xml tag and the stuff inside will also have... (4 Replies)
Hi all,
First off, Thank you all for the knowledge I have gleaned from this site!
Deleting Records from a text file... sed paragraphs
The following code works nearly perfect, however each time it is run on the log file it adds a newline at the head of the file, run it 5 times, it'll have 5... (1 Reply)
I'm not sure if the problem I'm seeing is an artifact of sed or simply a beginner's mistake. Here's the problem: I want to add a zero-width space following each underscore between XML tags. For example, if I had the following xml:
<MY_BIG_TAG>This_is_a_test</MY_BIG_TAG>
It should look like... (8 Replies)
My need is :
Want to change
docBase="/something/something/something"
to
docBase="/only/this/path/for/all/files"
I have some (about 250 files)xml files.
In FileOne it contains
<Context path="/PPP" displayName="PPP" docBase="/home/me/documents" reloadable="true" crossContext="true">... (1 Reply)
Hi,
I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :-
./sample.sh: line... (12 Replies)
I am learning SED and just following the shell scripting book, i have trouble understanding the grep and sed statement,
Question : 1
__________
/opt/oracle/work/antony>cat teledir.txt
jai sharma 25853670
chanchal singhvi 9831545629
anil aggarwal 9830263298
shyam saksena 23217847
lalit... (7 Replies)
Discussion started by: Antony Ankrose
7 Replies
LEARN ABOUT ULTRIX
calendar
calendar(1) General Commands Manual calendar(1)Name
calendar - calendar reminder service
Syntax
calendar [-]
Description
The command consults the file `calendar' in the current directory and prints out lines that contain today's or tomorrow's date. The com-
mand recognizes most month-day dates, such as Dec. 7, december 7, 12/7, but it does not recognize dates formatted in the following ways: 7
December or 7/12. If you give the month as * with a date, such as, * 1, that day in any month will do. On weekends, specifying tomorrow
extends through Monday.
When an argument is present, the command searches through a user's calendar file in his login directory and sends him any positive results
by Normally this is done daily under control of
The calendar file is first run through the C preprocessor, to include any other calendar files specified with the #include syntax.
Included calendars are shared by all users, and are maintained and documented by the local administration.
Options
- Functions for every user who has a calendar file in his login directory.
Restrictions
The extended idea of tomorrow does not account for holidays.
Files
calendar
/usr/lib/calendar to figure out today's and tomorrow's dates
/etc/passwd
/tmp/cal*
/lib/cpp, egrep, sed, mail as subprocesses
See Alsoat(1), cron(8), mail(1)calendar(1)
10-17-2014
