change to:
The above should probably be read A not read $A
In relation to this:
Can't see where $pass is set in this script. You many need to post an example of how data is stored in the login_users file, because I think this grep won't find the correct line.
Another thought: be carefull that users cant directly read ~/casestudies/login_users otherwise they can get password without using your script (can use sudo to run script as another user that can read the login_users file).
Last edited by Chubler_XL; 03-07-2011 at 08:19 PM..
Hi,
I want to check if a variable has a value assigned to it or not.
I can do following -
cat $Var > File1
if
then
echo "$Var has value"
else
echo "$Var is null"
fi
But I have to check for 3 Variables and I want to wrap it up in couple of unix statements.
Any... (3 Replies)
Can any one help us in finding the the last word of each line from a text file and print it.
eg:
1st --> aaa bbbb cccc dddd eeee ffff ee
2nd --> aab ered er fdf ere ww ww f
the o/p should be a below.
ee
f (1 Reply)
Hi,
i'm posting this in the Solaris forum although maybe it should be better in the General unix forum, I'm formatting an output witht he following command:
crontab -l | grep GBOUAT8 | grep UTP | grep -i stop | sed 's/\\//'
08 2 * * 2-6 /apps/sum_glob/gbo_uat/sparse/bin/dmg_cronlaunch -ENVI... (2 Replies)
Hi Everyone,
I am looking for a simple way for replacing all the files under a directory that use the server "xsgd1234dap" with "xsdr3423pap".
For Example:
In the Directory,
$pwd
/home/nick
$ grep -l "xsgd1234dap" *.sh | wc -l
119
I have "119" files that are still using... (5 Replies)
I am trying to check whether a variable has been assigned on the command line or not.
Here is what I did:
#!/usr/bin/bash
if( $variable == '\0')
{
print "variable was not assigned"
exit
}
else
NF = 2 {print $1, ""}
exit
fi
awk -f question1.awk variable = 58 letters.txt.
So... (3 Replies)
I have a file that has the words I want to find in other files (but lets say I just want to find my words in a single file). Those words are IDs, so if my word is ZZZ4, outputs like aaZZZ4, ZZZ4bb, aaZZZ4bb, ZZ4, ZZZ, ZyZ4, ZZZ4.8 (or anything like that) WON'T BE USEFUL.
I need the whole word... (6 Replies)
example:
i have the following text file...
i am very tired.
i am busy
i am hungry
i have to find the number of occurence of a particular word 'am' from the text file.. can any one give the shell script for it (34 Replies)
I need to find a word '% Retail by State' in the folder /usr/sas/reports/RetailSalesTaxallocation.
When I tried like below,
-bash-4.1$ cd /usr/sas/reports/RetailSalesTaxallocation
-bash-4.1$ find ./ -name % Retail by State
find: paths must precede expression: Retail
Usage: find ... (10 Replies)
Hi All,
I am looking for a perl/awk/sed command to auto-increment the numbers line in file, P1.tcl:
run_build_model sparc_ifu_dec
run_drc
set_faults -model path_delay -atpg_effectiveness -fault_coverage
add_delay_paths P1
set_atpg -abort_limit 1000
run_atpg -ndetects 1000
I would like... (6 Replies)
Discussion started by: jypark22
6 Replies
LEARN ABOUT HPUX
read
read(1) General Commands Manual read(1)NAME
read - read a line from standard input
SYNOPSIS
var ...
DESCRIPTION
reads a single line from standard input. The line is split into fields as when processed by the shell (refer to shells in the first field
is assigned to the first variable var, the second field to the second variable var, and so forth. If there are more fields than there are
specified var operands, the remaining fields and their intervening separators are assigned to the last var. If there are more vars than
fields, the remaining vars are set to empty strings.
The setting of variables specified by the var operands affect the current shell execution environment.
Standard input to can be redirected from a text file.
Since affects the current shell execution environment, it is usually provided as a normal shell special (built-in) command. Thus, if it is
called in a subshell or separate utility execution environment similar to the following, it does not affect the shell variables in the
caller's environment:
Options
recognizes the following options:
Do not treat a backslash character in any special way.
Consider each backslash to be part of the input line.
Opperands
recognizes the following operands:
var The name of an existing or nonexisting shell variable.
EXTERNAL INFLUENCES
Environment Variables
determines the internal field separators used to delimit fields.
RETURN VALUE
exits with one of the following values:
0 Successful completion.
>0 End-of-file was detected or an error occurred.
EXAMPLES
Print a file with the first field of each line moved to the end of the line.
while read -r xx yy
do
printf "%s %s
" "$yy" "$xx"
done < input_file
SEE ALSO csh(1), ksh(1), sh(1), sh-posix(1).
STANDARDS CONFORMANCE read(1)