That's actually a poor solution. Should the value being tested expand to multiple fields, it could lead to syntax errors or other forms of unexpected behavior.
You could quote the command substitution, to ensure that test/[ is only passed a single argument, but, if using grep anyway, I would drop the use of test/[ altogether, redirect the output of egrep to /dev/null (or use the -q option if available), and allow the if statement to use egrep's exit status directly.
---------- Post updated at 03:02 PM ---------- Previous update was at 02:58 PM ----------
Hello All,
I have a script that will email out if the email address is specified as parameter 1.
I am using ksh, and then tried the following :
email=$1
Following did not work, I am getting error
test -z $email
test ${email:=" ") -eq " "
test -n $email
test ${?email}
What... (4 Replies)
I am making a script to check the parameters, but it seems that I can't catch the parameters by loop.
$ cat sendmsg.sh
#!/bin/sh
## Parameter Check
i=0
max=$#
while
do
PARAM=$${i}
i=`expr ${i} + 1`
echo ${PARAM}
done
How can I get the $1, $2, $3 by loop and set their... (2 Replies)
Hi,
Can anyone help in the below problem.
file1 has the below contents
fileset 999 primary-ilist inode 37020 has invalid dotdot (426094) -> Not exist
fileset 999 primary-ilist inode 115016 dup block ->... (9 Replies)
Hi Guys,
I am writing a Unix script which accepts a directory path as parameter $1
so something like
/user5.data/WA/01
will be passed in.
I want to determine if the directory path passed in contains "WA" as above (because then I need to do something specific if it does)
What is the... (9 Replies)
Hi ,
I am facing a problem .. which looks simple... but took 2 days of mine.. even now it is not solved completely..
I have one variable..., want to know whether that variable contains number... canbe +ve or -ve ...
Values
+35 --- number
-43 --- number
45A -- non number... (12 Replies)
Hi,
Can anyone help me out to check whether the input argument is number?
Example:
REQUEST_ID="123456"
I need to check the REQUEST_ID value is number or string.
Thanks in Advance
Regards
BS (6 Replies)
Hi all
i need to check that if user has passed any input parameter while executing he shell script like
./test1.sh -a"-v"
then do smothing
if user execute the script without giving input paramater then
./test1.sh
then do something
how can we check this input parameter (6 Replies)
Hi there,
I am having a problem on an AIX server running a WebSphere MQ instance. The problem is that sometimes it seems to reach process limit, but I do not find the processes themselves.
What I see: succeed to log in (as root from console os as nonpriviliged user via ssh). Trying to run... (19 Replies)
Discussion started by: trifo75
19 Replies
LEARN ABOUT LINUX
xzegrep
XZGREP(1) XZ Utils XZGREP(1)NAME
xzgrep - search compressed files for a regular expression
SYNOPSIS
xzgrep [grep_options] [-e] pattern file...
xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...
DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options
specified are passed directly to grep(1).
If no file is specified, then standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1)
and bzip2(1) compressed files are not supported.
If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze-
grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.
ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).
SEE ALSO grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)Tukaani 2010-09-27 XZGREP(1)