How to write this condition in ksh?
if myfile is empty or myfile does not exist
then
do action1
fi
is this OK?
if ] -o ] then
then
do action1
fi
Thanks. (3 Replies)
Hi,
Plz suggest me how can i change the date of a file.
Suppose my file has been created in some date and i want to give it present date.
How can i do this???? (2 Replies)
hi all,
i want use the variable value as a new variable name. print output of new variable.
for i in COMPUTER1 COMPUTER2
do
flag_name=${i}_FLAG
eval ${flag_name}=123
echo $i'_FLAG'
done
output is
COMPUTER1_FLAG
COMPUTER2_FLAG
i need output as
123
123 (2 Replies)
Apologies for the utter triviality of this question, but we all have to start somewhere! I've also tried searching but this question is pretty vague so I didn't (a) really know what to search for or (b) get many relevant hits to what I did search for.
Anyway, I'm in the process of self-teaching... (1 Reply)
Hi.
How to change string variable in awk?
for example, I parse with awk script text file named some_name_with_extension.txt
I want to print only some_name in my script
....
varCompName = FILENAME
print varCompName
How to put not all symbols from FILENAME to variable?
thank you
This... (4 Replies)
Hey Guys,
I have text such as this.
28003,ALCORN,2
28009,BENTON,2
28013,CALHOUN,2
28017,CHICKASAW,2
47017,CARROLL,2
05021,CLAY,0
The last digit after the final "," is a variable value. This is the base file. I have to do further execution on this file later and I need to update the... (7 Replies)
I feel like it is just a matter of using the $ operators correctly, but I can't seem to get it...
hostname="network"
ip="192.168.1.1"
netmask=""
variables=( $hostname $ip $netmask )
for var in ${variables}
do
if ; then
$var="--"
fi
done
echo... (7 Replies)
Hi,
This is the first time I see something like this, and I don't why it happens.
Please give me some help. I am really appreciate it.
Basically I am trying to remove all empty lines of an input..
#!/bin/bash
set -e
set -x
str1=`echo -e "\nhaha" | grep -v ^$`
#str2=`echo -e "\n" |... (4 Replies)
I have a file hello.txt which was created today (today's date timestamp)
I wish to change its date timestamp (access, modified, created) to 1 week old i.e one week from now.
uname -a
SunOS mymac 5.11 11.2 sun4v sparc sun4v
Can you please suggest a easy way to do that ? (12 Replies)
Discussion started by: mohtashims
12 Replies
LEARN ABOUT PHP
setuid
SETUID(1) General Commands Manual SETUID(1)NAME
setuid - run a command with a different uid.
SYNOPSIS
setuid username|uid command [ args ]
DESCRIPTION
Setuid changes user id, then executes the specified command. Unlike some versions of su(1), this program doesn't ever ask for a password
when executed with effective uid=root. This program doesn't change the environment; it only changes the uid and then uses execvp() to find
the command in the path, and execute it. (If the command is a script, execvp() passes the command name to /bin/sh for processing.)
For example,
setuid some_user $SHELL
can be used to start a shell running as another user.
Setuid is useful inside scripts that are being run by a setuid-root user -- such as a script invoked with super, so that the script can
execute some commands using the uid of the original user, instead of root. This allows unsafe commands (such as editors and pagers) to be
used in a non-root mode inside a super script. For example, an operator with permission to modify a certain protected_file could use a
super command that simply does:
cp protected_file temp_file
setuid $ORIG_USER ${EDITOR:-/bin/vi} temp_file
cp temp_file protected_file
(Note: don't use this example directly. If the temp_file can somehow be replaced by another user, as might be the case if it's kept in a
temporary directory, there will be a race condition in the time between editing the temporary file and copying it back to the protected
file.)
AUTHOR
Will Deich
local SETUID(1)