10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have the following command.(Delete all trailing blank lines at the end of a file.)
sed -e :a -e '/^\n*$/{$d;N;ba' -e '}'
I don't understand the logic of this command and also I don't understand why -e is used.
Can you please let me know the logic of this command and why three -e... (5 Replies)
Discussion started by: TomG
5 Replies
2. UNIX for Dummies Questions & Answers
I have a data base of part numbers:
AAA Thing1
BBB Thing2
CCC Thing3
File one is a list of part numbers:
XXXX AAA234
XXXX BBB678
XXXX CCC2345
Is there a sed one-line that would compare a data base with and replace the part numbers so that the output looks like this?
XXXX AAA234... (7 Replies)
Discussion started by: jimmyf
7 Replies
3. UNIX for Dummies Questions & Answers
I have a data base of part numbers:
AAA Thing1
BBB Thing2
CCC Thing3
File one is a list of part numbers:
AAA234
BBB678
CCC2345
Is there a sed one-line that would compare a data base with and replace the part numbers so that the output looks like this?
AAA234 Thing1
BBB678 Thing2... (5 Replies)
Discussion started by: jimmyf
5 Replies
4. UNIX for Advanced & Expert Users
Can anyone explain the below sed oneliner?
sed -e ':a' -e '$q;N;11,$D;ba'
It works same as tail command.
I just want to know how it works.
Thanks (1 Reply)
Discussion started by: pandeesh
1 Replies
5. Shell Programming and Scripting
hey everyone,
I want to remove some characters from a string that i have with sed. For example if my string is:
a0=bus a1=car a2=truck
I want my output to look like this:
bus car truck
So i want to delete the two characters before the = and including the =. This is what i came up with... (3 Replies)
Discussion started by: GmGeubt
3 Replies
6. Shell Programming and Scripting
sed awk one liner (2 Replies)
Discussion started by: jap2614
2 Replies
7. Shell Programming and Scripting
I want to use SED to replace all new line characters of a file, I googled and found this one liner
sed '{:q;N;s/\n//g;t q}' infile
what do :q;N; and t q mean in this script? (6 Replies)
Discussion started by: kevintse
6 Replies
8. Shell Programming and Scripting
I need to print specific lines from a file, say 2-5, 8, 12-15, 17, 19, 21-27. How do I achieve this? (2 Replies)
Discussion started by: Ilja
2 Replies
9. Shell Programming and Scripting
Execution of the following segment is giving the error -
Script extract:-
OUT=$DATADIR/sol_rsult_orphn.bcp
TMP1=${OUT}_tmp1
TMP=${OUT}_tmp
( isql -w 400 $dbConnect_OPR <<EOF
select convert(char(10), s.lead_id)
+'|'
+ s.pho_loc_type,
";",
s.sol_rsult_cmnt,
";",
+'|'+ s.del_ind... (3 Replies)
Discussion started by: kzmatam
3 Replies
10. UNIX for Dummies Questions & Answers
Hi group,
I want to replace the occurance of a particular text in a paragraph.I tried with Sed,but Sed only displays the result on the screen.How can i update the changes in the original file???
The solution should be a one liner using awk and sed.
Thanks in advance. (5 Replies)
Discussion started by: bishnu.bhatta
5 Replies
diffmk(1) User Commands diffmk(1)
NAME
diffmk - mark differences between versions of a troff input file
SYNOPSIS
diffmk oldfile newfile markedfile
DESCRIPTION
diffmk compares two versions of a file and creates a third version that includes "change mark" (.mc) commands for nroff(1) and troff(1).
oldfile and newfile are the old and new versions of the file. diffmk generates markedfile, which, contains the text from newfile with
troff(1) "change mark" requests (.mc) inserted where newfile differs from oldfile. When markedfile is formatted, changed or inserted text
is shown by | at the right margin of each line. The position of deleted text is shown by a single *.
USAGE
See largefile(5) for the description of the behavior of diffmk when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 An example of the diffmk command.
diffmk can also be used in conjunction with the proper troff requests to produce program listings with marked changes. In the following
command line:
example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr
the file reqs contains the following troff requests:
.pl 1
.ll 77
.nf
.eo
.nh
which eliminate page breaks, adjust the line length, set no-fill mode, ignore escape characters, and turn off hyphenation, respectively.
If the characters | and * are inappropriate, you might run markedfile through sed(1) to globally change them.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWdoc |
+-----------------------------+-----------------------------+
SEE ALSO
diff(1), nroff(1), sed(1), troff(1), attributes(5), largefile(5)
BUGS
Aesthetic considerations may dictate manual adjustment of some output. File differences involving only formatting requests may produce
undesirable output, that is, replacing .sp by .sp 2 will produce a "change mark" on the preceding or following line of output.
SunOS 5.11 14 Sep 1992 diffmk(1)