Please become accustomed to provide decent context info of your problem.
It is always helpful to support a request with system info like OS and shell, related environment (variables, options), preferred tools, and adequate (representative) sample input and desired output data and the elaborate (!) logics connecting the two, to avoid ambiguities and keep people from guessing.
for example:
searches only for single word
for single word
this is line three
match=$(grep -n -e "single" data.txt)
this command will stored "..... single ...... single" into search.
how can i grep the single word just from line 2 only?? (3 Replies)
ok, so this is proving to be kind of difficult even though it should not be.
say for instance I want to grep out ONLY the word fkafal from the below output, how do I do it?
echo ajfjf fjfjf iafjga fkafal foeref afoafahfia | grep -w "fkafal"
If i run the above command, i get back all the... (4 Replies)
Hi.
I have a tab separated file that has a couple nearly identical lines. When doing:
sort file | uniq > file.new
It passes through the nearly identical lines because, well, they still are unique.
a)
I want to look only at field x for uniqueness and if the content in field x is the... (1 Reply)
Hi,
I have gone through may posts and dint find exact solution for my requirement.
I have file which consists below data and same file have lot of other data.
<MAPPING DESCRIPTION ='' ISVALID ='YES' NAME='m_TASK_UPDATE' OBJECTVERSION ='1'>
<MAPPING DESCRIPTION ='' ISVALID ='NO'... (11 Replies)
Is it possible to modify file like this.
1. Remove all the duplicate names in a define column i.e 4th col
2. Count the no.of unique names separated by ";" and print as a 5th col
thanx in advance!!
Q
input
c1 30 3 Eh2
c10 96 3 Frp
c41 396 3 Ua5;Lop;Kol;Kol
c62 2 30 Fmp;Fmp;Fmp
... (5 Replies)
Hi,
Below is an example :
ST1 PREF: int1 AVAIL: int2
ST2 PREF :int1 AVAIL: int2
I need int1 to come in preferred variable while programming and int2 in available variable
Please help me doing so
Best regards,
Vishal (10 Replies)
Trying to use awk to find a keyword and return the matches in the row, but also $1 and $2, which are the unique id's, but they only appear once. Thank you :).
file
name 31 Index Chromosomal Position Gene Inheritance
122 2106725 TSC2 AD
124 2115481 TSC2 AD
121 2105400 TSC2 AD... (6 Replies)
Hello All,
Here is am trying to get maximum value of third field depending on
first,second and fourth fields with awk command . delimeter is pipe(|) .
input
0221|09|14.25|aaa
0221|09|44.27|aaa
0221|09|44.33|aaa
0221|09|44.53|bbb
0221|09|34.32|bbb
0221|09|37.13|bbb... (5 Replies)
Discussion started by: sayami00
5 Replies
LEARN ABOUT LINUX
envsubst
ENVSUBST(1) GNU ENVSUBST(1)NAME
envsubst - substitutes environment variables in shell format strings
SYNOPSIS
envsubst [OPTION] [SHELL-FORMAT]
DESCRIPTION
Substitutes the values of environment variables.
Operation mode:
-v, --variables
output the variables occurring in SHELL-FORMAT
Informative output:
-h, --help
display this help and exit
-V, --version
output version information and exit
In normal operation mode, standard input is copied to standard output, with references to environment variables of the form $VARIABLE or
${VARIABLE} being replaced with the corresponding values. If a SHELL-FORMAT is given, only those environment variables that are referenced
in SHELL-FORMAT are substituted; otherwise all environment variables references occurring in standard input are substituted.
When --variables is used, standard input is ignored, and the output consists of the environment variables that are referenced in SHELL-FOR-
MAT, one per line.
AUTHOR
Written by Bruno Haible.
REPORTING BUGS
Report bugs to <bug-gnu-gettext@gnu.org>.
COPYRIGHT
Copyright (C) 2003-2007 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for envsubst is maintained as a Texinfo manual. If the info and envsubst programs are properly installed at your
site, the command
info envsubst
should give you access to the complete manual.
GNU gettext-runtime 0.18.1 June 2010 ENVSUBST(1)