I assume that the value is unknown, but other content on the line is and you could use grep to print the line from the file. I also assume that there is only one instance of that line in the file. If both are true assumptions, then this will work in either Kshell or bash:
The array a can then be referenced like ${a[6]}
If there are more than one matching lines, you'll have to do a bit more work than this.
Last edited by agama; 11-21-2011 at 11:56 PM..
Reason: Better pattern
I know this is a total begginer question but what is wrong with this picture. My loop wont loop, it just drops me back to the prompt and gives the error "unary operator expected". Any help would be appreciated.
here it is,
#!/bin/sh
selection=
while
do
cat << MENU
1)List files in... (2 Replies)
I don't even know if this should go here but I just would like to know what this means:
d0e45878043844ffc41aac437e86b602
I know absolutely nothin' about UNIX, and I found this in a SQL table in a board I run.
Someone please tell me what that is in "normal" mode.
Pardon me for my... (4 Replies)
This is probably a really simple problem, but goes easy on me I'm still a newb. The problem I have is that a script (we'll call it script.script) I edited won't run for some reason, I get the error "ksh: script.script: not found"
The location of my script is as follows: /home/users/arkitech
... (3 Replies)
Greetings.
I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file.
I'm struggling to see how each line can be... (5 Replies)
Assume $x equals "".
If I try:
if test -n $x
I get the "Expression syntax" error.
It works in Linux but not in unix bash. In unix bourne I get "test: argument expected" (4 Replies)
Hello,
This is my first post on the forums. So I want to start by thanking anyone who is kind enough to read this post and offer advise. I hope to be an active contributor now that I've found these forums.
I have an issue that I figure would be a good first post..
I have 2 text files... (5 Replies)
My first post here....
I have a few years exp with linux distros and some very basic Python..Ive been intent on learning shell scripting the last few weeks. Please excuse my crude efforts.
I am running a program that takes network data containing US city names in plain text. I am TRYING to... (7 Replies)
Hi i want to extract the word present before .txt in the text file.
For example,
Sample_ab_a.txt ----------> i need 'a'
Sample_abc_b.txt -----------> i need 'b'
Can anyone help me in getting the word extracted (5 Replies)
This should be extremely simple and someone will probably answer it in .5 seconds. I need to know what:
VARIABLE=${0##*/}
does? I do not have a shell handy to just try it in. I am reading through some scripts and need to understand this line. Any help is appreciated.
Many thanks!
-... (3 Replies)
Hello,
I have a mysql text file. I want add word to it. Thanks for help.
Sample sql file:
,'address','166 Warren Street, NY 12534'),(45215,26556,'phone','(518)811-4145'),(151426,15565,'listing_duration','address','122 Hom Street, NY... (6 Replies)
Discussion started by: hoo
6 Replies
LEARN ABOUT V7
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)