Hi, I have two input files.
File1:
ID Name Place
1-234~name1~Newyork
1-34~name2~Boston
1-2345~name3~Hungary
File1 is a variable length file where each column is seperated by delimitter "~".
File2:
ID Country
1-34<<11 SPACES>>USA<<7 spaces>>
1-234<<10 SPACES>>UK<<8... (5 Replies)
Col1 Col2 Col3 Col4
12 Completed 08 0830
12 In Progress 09 0829
11 For F U 07 0828
Considering the file above, how could i replace the third column the most efficient way? The actual file size is almost 1G. I am... (10 Replies)
Hi, Iam new to unix. I have one input file .
Input file :
ID1~Name1~Place1
ID2~Name2~Place2
ID3~Name3~Place3
I need output such that only first column should change to fixed width column of 15 characters of length.
Output File:
ID1<<12 spaces>>Name1~Place1
ID2<<12... (5 Replies)
Hi,
How to output the duplicate record to another file. We say the record is duplicate based on a column whose position is from 2 and its length is 11 characters.
The file is a fixed width file.
ex of Record:
DTYU12333567opert tjhi kkklTRG9012
The data in bold is the key on which... (1 Reply)
Hi,
I have a fixed width text file without any header row. One of the columns contains a date in YYYYMMDD format.
If the original file contains 3 dates, I want my shell script to split the file into 3 small files with data for each date.
I am a newbie and need help doing this. (14 Replies)
Input eg:
Ouput Expected.
The #rd line had the unexpted new line, which need to be replaced with space.
I was planing to go with checking the length of each line using awk and if the length is less than the defeined limit, (12 in above case) will replace the newline with space.
... (5 Replies)
hi,
i have a fixed width file with multiple columns and need to print data using awk command.
i use: awk -F "|" '($5 == BH) {print $1,$2,$3}' <non_AIM target>.txt for a delimiter file.
but now i have a fixed width file like below:
7518 8269511BH 20141224951050N8262
11148 8269511BH... (5 Replies)
All,
I used to use following command to replace specific location in a fixed width file.
Recently looks like my command stopped working as intended. We are on AIX unix.
awk 'function repl(s,f,t,v)
{ return substr(s,1,f-1) sprintf("%-*s", t-f+1, v) substr(s,t+1) }
NR<=10 {... (3 Replies)
Hi Forum.
I tried searching for a solution using the internet search but I haven't been able to find any solution for what I'm trying to accomplish.
I have a fixed width column file where I need to search for any occurrences of "D0" in col pos.#1-2, 10-11, 20-21 and replaced it with "XD".
... (2 Replies)
Discussion started by: pchang
2 Replies
LEARN ABOUT FREEBSD
libstdbuf
LIBSTDBUF(3) BSD Library Functions Manual LIBSTDBUF(3)NAME
libstdbuf -- preloaded library to change standard streams initial buffering
DESCRIPTION
The libstdbuf library is meant to be preloaded with the LD_PRELOAD environment variable to as to change the initial buffering of standard
input, standard output and standard error streams.
Although you may load and configure this library manually, an utility, stdbuf(1), can be used to run a command with the appropriate environ-
ment variables.
ENVIRONMENT
Each stream can be configured independently through the following environment variables (values are defined below):
_STDBUF_I
Initial buffering definition for the standard input stream
_STDBUF_O
Initial buffering definition for the standard output stream
_STDBUF_E
Initial buffering definition for the standard error stream
Each variable may take one of the following values:
"0" unbuffered
"L" line buffered
"B" fully buffered with the default buffer size
size fully buffered with a buffer of size bytes (suffixes 'k', 'M' and 'G' are accepted)
EXAMPLE
In the following example, the stdout stream of the awk(1) command will be fully buffered by default because it does not refer to a terminal.
libstdbuf is used to force it to be line-buffered so vmstat(8)'s output will not stall until the full buffer fills.
# vmstat 1 | LD_PRELOAD=/usr/lib/libstdbuf.so
STDBUF_1=L awk '$2 > 1 || $3 > 1' | cat -n
See also the manpage of stdbuf(1) for a simpler way to do this.
HISTORY
The libstdbuf library first appeared in FreeBSD 8.4.
AUTHORS
The original idea of the libstdbuf command comes from Padraig Brady who implemented it in the GNU coreutils. Jeremie Le Hen implemented it
on FreeBSD.
BSD April 28, 2012 BSD