Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Print first, second, every nth, and last record Post 302552408 by agama on Friday 2nd of September 2011 10:44:40 PM
Old 09-02-2011
Quote:
Originally Posted by alister
The following builds on agama's suggestion so that it handles the last line:

Very embarrassing -- I completely missed that requirement!! Thanks.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Using sed to extract Nth record?

I have a comma-separated record and I'd like to use sed to pull the Nth record from it. It seems like it'd need to be something like this: sed -n 's/'"\,$1\,"'/&/p' Am I close? (3 Replies)
Discussion started by: doubleminus
3 Replies

2. UNIX for Advanced & Expert Users

Print Full record and substring in that record

I have i got a requirement like below. I have input file which contains following fixed width records. 00000000000088500232007112007111 I need the full record and concatenated with ~ and characters from 1to 5 and concatenated with ~ and charactes from 10 to 15 The out put will be like... (1 Reply)
Discussion started by: ukatru
1 Replies

3. Shell Programming and Scripting

Get Nth record from last line

I have a growing file . I knew only last few lines which is constant for evey job run. I'd need to pull the Nth record from the last line. In this case i should not use search pattern. (2 Replies)
Discussion started by: ford2020
2 Replies

4. Shell Programming and Scripting

How to Print from nth field to mth fields using awk

Hi, Is there any short method to print from a particular field till another filed using awk? Example File: File1 ==== 1|2|acv|vbc|......|100|342 2|3|afg|nhj|.......|100|346 Expected output: File2 ==== acv|vbc|.....|100 afg|nhj|.....|100 (8 Replies)
Discussion started by: machomaddy
8 Replies

5. Shell Programming and Scripting

Print every nth line

Dear all, How to print every nth line. File like this: File input: 1 1 1 1 1 1 2 2 2 3 3 3 3 3 3 (3 Replies)
Discussion started by: attila
3 Replies

6. UNIX for Dummies Questions & Answers

Print Nth to last field

Hey, I'm sure this is answered somewhere but my Googling has turned up nothing. I have a file with data in the following format: <desription of event> at <time and date>The desription of the event is variable length and hence when the list is displayed it is hard to easily see the date (and... (8 Replies)
Discussion started by: RECrerar
8 Replies

7. Shell Programming and Scripting

Print nth line in a file

Bash/Oracle Linux 6.4 A basic requirement. How can I get nth line of a file printed ? Can I use grep in this case ? Example: In the below file, 12th line is "Kernel parameter check passed for rmem_max" . I just want the 12 line to be printed. # cat sometext.txt Kernel version check... (2 Replies)
Discussion started by: John K
2 Replies

8. AIX

Print nth previous line after match

Please help me print nth line after match awk or sed one line command. (3 Replies)
Discussion started by: sushma123
3 Replies

9. UNIX for Beginners Questions & Answers

Print lines based upon unique values in Nth field

For some reason I am having difficulty performing what should be a fairly easy task. I would like to print lines of a file that have a unique value in the first field. For example, I have a large data-set with the following excerpt: PS003,001 MZMWR/ L-DWD// * PS003,001... (4 Replies)
Discussion started by: jvoot
4 Replies

10. UNIX for Beginners Questions & Answers

Need to print nth till last column of ls output using sed

I wish to print first, third and sixth till the last column from the output of ls command ls -ltr /app/deploy.yml -rw-rw-r-- 1 user1 dba 27342 Aug 28 10:17 /app/deploy.yml Desired Output: Below command gives me the desired output. ls -ltr /app/deploy.yml | awk '{$2=$4=$5=""; print... (6 Replies)
Discussion started by: mohtashims
6 Replies
TCFMGR(1)							   Tokyo Cabinet							 TCFMGR(1)

NAME
tcfmgr - the command line utility of the fixed-length database API DESCRIPTION
The command `tcfmgr' is a utility for test and debugging of the fixed-length database API and its applications. `path' specifies the path of a database file. `width' specifies the width of the value of each record. `limsiz' specifies the limit size of the database file. `key' specifies the key of a record. `value' specifies the value of a record. `file' specifies the input file. tcfmgr create path [width [limsiz]] Create a database file. tcfmgr inform [-nl|-nb] path Print miscellaneous information to the standard output. tcfmgr put [-nl|-nb] [-sx] [-dk|-dc|-dai|-dad] path key value Store a record. tcfmgr out [-nl|-nb] [-sx] path key Remove a record. tcfmgr get [-nl|-nb] [-sx] [-px] [-pz] path key Print the value of a record. tcfmgr list [-nl|-nb] [-m num] [-pv] [-px] [-rb lkey ukey] [-ri str] path Print keys of all records, separated by line feeds. tcfmgr optimize [-nl|-nb] path [width [limsiz]] Optimize a database file. tcfmgr importtsv [-nl|-nb] [-sc] path [file] Store records of TSV in each line of a file. tcfmgr version Print the version information of Tokyo Cabinet. Options feature the following. -nl : enable the option `FDBNOLCK'. -nb : enable the option `FDBLCKNB'. -sx : the input data is evaluated as a hexadecimal data string. -dk : use the function `tcfdbputkeep' instead of `tcfdbput'. -dc : use the function `tcfdbputcat' instead of `tcfdbput'. -dai : use the function `tcfdbaddint' instead of `tcfdbput'. -dad : use the function `tcfdbadddouble' instead of `tcfdbput'. -px : the output data is converted into a hexadecimal data string. -pz : do not append line feed at the end of the output. -m num : specify the maximum number of the output. -pv : print values of records also. -rb lkey ukey : specify the range of keys. -ri str : specify the interval notation of keys. -sc : normalize keys as lower cases. This command returns 0 on success, another on failure. SEE ALSO
tcftest(1), tcfmttest(1), tcfdb(3), tokyocabinet(3) Man Page 2011-02-12 TCFMGR(1)
All times are GMT -4. The time now is 06:08 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy