Say I have a command that looks like this:
host=$(/usr/bin/host xxx.xxx.xxx.xxx)
What is the significance of the $()
I know what happens when I don't include them, and I know what happens when I do, but...
Why doo it woik wit $()
Sorry for the lame question :o (3 Replies)
I know that forward slash and backslash are "whack" and "backwhack," and I know that a pound-sign or number sign is "crunch" and an exclamation point, "bang." What I would like to know is whether or not there's a popular nickname for the dollar sign. I call it "cash," but that may just be Yank... (6 Replies)
Dear Friends,
I want to move all the files to temp folder except files having following extensions which are case sensitive.
.ttM
.Hmt
.dMt
Request you to guide me to do the same
Thank you in advance
Anushree (3 Replies)
Hi,
I have a requirement to find and replace contents from multiple files.
I am able to replace the contents. but i am facing a issue while replacing when finding a certain charcter pattern as unix is treating this is a command.
Please find below sample on the same
Output file to be generated... (1 Reply)
Hi All,I am facing the below problem I have set a variable:
a=`cat a.txt| grep "mad" | cut -c 30-50`the output is coming
echo $a1
10 Mad300 3215however the actual ouput is
1.10 Mad300 3215There are 4spaces between 300 and 3215 so if i do:
echo "$a" I am getting correct output:
1.10... (3 Replies)
Dear All,
I have a file which I want to get the list of frequency of each word, ignoring list of stop words and now I have problems which punctuations and " 's ".
what I am doing is:
sed 's///g' file01.txt > file01-clear.txt
cat file01-clear.txt | tr "" ""| tr ' ' '\012' |sort |uniq -c... (3 Replies)
#!/bin/bash
a=(*.pdf)
punct=((~`!@#$%^&*()_-+=|\{};':",./<>?))
for (( i =0; i < ${#a}; i++ ))
do
sed -ri 's/$punct//g' ${a}
done
I cannot use the above code, can you help me in removing all punctuation marks from file name except file extension. The idea is that once all... (9 Replies)
Greetings!
My first PHP question; and, no doubt, a "no-brainer" for the initiated :)
The question centers around the proper syntax for input field labeling. The snippet which puzzles me (and the candidate which I wish to modify) goes like this:<?php _e('Hello World'); ?>:<br />What I'd like... (0 Replies)
Hi All,
I would have though this would have been simple, but...
I have text in a variable that I need to insert into a bunch of other files... The text is simple:
... (2 Replies)
Discussion started by: joeg1484
2 Replies
LEARN ABOUT LINUX
zegrep
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)