Hi,
variable1="This is a car"
Now I want to replace the content of variable1, "car" to "dog". Is there any simple command I can use.
Thanks.
Joseph (4 Replies)
I got a sample BASH script like this :
$ cat test
MYVAR=$1
DUMMY1="This is tricky"
DUMMY2=24
echo $
$ ./test DUMMY1
./test: line 5: This is tricky: syntax error in expression (error token is "is tricky")
**I was expecting the output as "This is tricky", ah! but no luck
**But... (2 Replies)
I have a variable that contains filenames like this:
variable="file_1.extension<blank>file_2.extension<blank>file_3.extension<blank>file_4.extension and so on"
How can I make filenames to be separated by newline: (I tried Sed but it didn't worked well)
file_1.extension
file_2.extension... (6 Replies)
Hi all,
I have a file which will be updated every half an hour and time stamp will be printed in the beginning of the updation. i just want to grep the content between every hoalf an hour.
Pls help me on this issue. how to grep contents between tim stamp?
Ex of file:
29/09/2010... (20 Replies)
I need to know if is possible to use grep to check content of a local variable, for eg. i use read index and i want to check if the index i read is in correct form, how do i do that i tried with grep but i get errors all the time dont know how to make it work.. thanks! (3 Replies)
Hello all,
I do have a variable containing one line like this:
Waiting for job XXXXXX to start
I needed to get the 'XXXXXX' literal, so I did the following:
job_interno=`echo $log_exec | sed 's/.*Waiting for job \(*\).*/\1/' `
#other stuff
Now, my variable is have more... (5 Replies)
Tricky one:
I want to do several things all at once to blow away a directory (rm -rf <dir>)
1) I want to find all files recursively that have a specific file extension (.ver) for example.
2) Then in that file, I want to grep for an expression ( "sp2" ) for example.
3) Then I want to... (1 Reply)
1) Is it possible to get tags content by grep -E ? For example title. Source text "<title>My page<title>"; to print "My page".
2) which bash utility to use when I want to use regex in this format?
(?<=title>).*(?=</title) (11 Replies)
I have some large login files that I need to extract (user)@(server) from. Where it gets tricky is that there is usually more than one '@' sign on each line(although it does have a leading space if it's not part of the (user)@(server) string), I need only the (user)@(server) section, I need only... (6 Replies)
hi i just cant figure out how can i do this ls -lt > log.txt using $PWD
what i mean is how can i get the ls command content into a file using $PWD variable? :confused: (4 Replies)
Discussion started by: chinababy
4 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)