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UNIX for Dummies Questions & Answers
Merging lines into one
Post 75456 by vgersh99 on Saturday 18th of June 2005 06:07:07 PM
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1. UNIX for Dummies Questions & Answers
Hi All,
I want to merge two lines in a file till the end of the file. So what could be the command to get so.
say file name : sample.txt
contents:
country=1
send apps =1 rece=2
country=2
send apps =3 rece=3
..
...
output:
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Hi,
I want to merge the lines starting with a comma symbol with the previous line of the file.
Input :
cat file.txt
name1,name2
,name3,name4
emp1,emp2,emp3
,emp4
,emp5
user1,user2
,user3
Output
name1,name2,name3,name4
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Hi folks.
Could somebody help me write a script or command that will look through a file and for every line that doesn't contain a certain value, merge it with the one above?
For example, the file contains:
SCOTLAND|123|ABC|yes
SCOTLAND|456|DEF|yes
SCOTLAND|78
9|GHI|yes
... (3 Replies)
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Thanks it worked for me. I have one more question on top of that. We had few records which were splitted in 2 lines instead of one. Now i identified those lines. The file is too big to open via vi and edit it. How can i do it without opening the file.
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I do have a text file with multiple lines on it. I want to put the lines of text into a single line where ever there is ";"
for example
ert, ryt, yvig,
fgr;
rtyu, hjk, uio,
hyu,
hjo;
ghj, tyu, gho,
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Hi,
I am attempting to merge the following lines which run over two lines using awk.
INITIAL OUTPUT
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LEARN ABOUT CENTOS
look
LOOK(1) User Commands LOOK(1) NAME
look - display lines beginning with a given string SYNOPSIS
look [options] string [file] DESCRIPTION
The look utility displays any lines in file which contain string. As look performs a binary search, the lines in file must be sorted (where sort(1) got the same options -d and/or -f that look is invoked with). If file is not specified, the file /usr/share/dict/words is used, only alphanumeric characters are compared and the case of alphabetic characters is ignored. OPTIONS
-a, --alternative Use the alternative dictionary file. -d, --alphanum Use normal dictionary character set and order, i.e. only alphanumeric characters are compared. (This is on by default if no file is specified.) -f, --ignore-case Ignore the case of alphabetic characters. (This is on by default if no file is specified.) -t, --terminate character Specify a string termination character, i.e. only the characters in string up to and including the first occurrence of character are compared. -h, --help Display help text and exit. -V, --version Output version information and exit. The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were found, and >1 if an error occurred. EXAMPLE
sort -d /etc/passwd -o /tmp/look.dict look -t: root:foobar /tmp/look.dict FILES
/usr/share/dict/words the dictionary /usr/share/dict/web2 the alternative dictionary SEE ALSO
grep(1), sort(1) COMPATIBILITY
The original manual page stated that tabs and blank characters participated in comparisons when the alphanum option was specified. This was incorrect, and the current man page matches the historic implementation. HISTORY
The look utility appeared in Version 7 AT&T Unix. AVAILABILITY
The look command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux June 2011 LOOK(1)