02-21-2013
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
So in my shell i execute:
{ while true; do echo string; sleep 1; done } | read line This waits one second and returns.
But
{ while true; do /bin/echo string; sleep 1; done } | read line continues to run, and doesn't stop until i kill it explicitly.
I have tried this in bash as well as zsh,... (2 Replies)
Discussion started by: ulidtko
2 Replies
2. UNIX for Dummies Questions & Answers
Bit of a weird one i suppose, i want to use an echo inside an echo... For example...
i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos...
echo "echo "hello"" >$file
echo "echo "goodbye"" >$file
... (3 Replies)
Discussion started by: mokachoka
3 Replies
3. Shell Programming and Scripting
Hello,
I got a Qstion. Im posting to a phpbb forum with bash and curl.. i have a text file with the following tags that i post to the forum:
$var1
$var2
$var3
How can i with sed or awk put var content from shell script between the ... in the... (7 Replies)
Discussion started by: atmosroll
7 Replies
4. AIX
When i use the command to check the preview of the filesets to be installed using CLI
# When using this commad 'm able to see all Preview view of the filesets to be installed
installp -apgX -d "." all
# When I redirected the same output to a file 'm able to see only half the details... (1 Reply)
Discussion started by: Sounddappan
1 Replies
5. Shell Programming and Scripting
echo `echo ` doesn't echoes anything. And it's logic. But
echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo"
(too much echoing :P):o (2 Replies)
Discussion started by: hakermania
2 Replies
6. Shell Programming and Scripting
Input
data_10 SSA
data_2 TYUE
data_3 PEOCV
data_6 SSAT
data_21 SSA
data_19 TYUEC
data_14 TYUE
data_15 SSA
data_32 PEOCV
.
.
Desired Output
data_10 SSA
data_2 TYUE
data_3 PEOCV
data_6 SSAT
data_19 TYUEC (9 Replies)
Discussion started by: patrick87
9 Replies
7. Shell Programming and Scripting
# echo 'export HISTFILE=/var/log/history/history_$(uname -n)_$(date +%Y:%b:%d:%H:%M)_$(who am i | awk '{print \$1}')' >> new_file
#
# cat new_file
export HISTFILE=/var/log/history/history_$(uname -n)_$(date +%Y:%b:%d:%H:%M)_$(who am i | awk {print $1})
#
Now how to echo the quotes around the... (2 Replies)
Discussion started by: proactiveaditya
2 Replies
8. Shell Programming and Scripting
I am in the process of developing a perl cgi page.
I had succeeded in developing the page but there are few errors/issues with the page.
description about cgi page:
My CGI page retrieves all the file names from an directory and displays the files in drop down menu for downloading the... (5 Replies)
Discussion started by: scriptscript
5 Replies
9. Shell Programming and Scripting
I have a small script that works well but when I am putting pipes at the end of the echo command, output is getting weird.
My script it below:
sed '1d' CONTROL_TOTALS_*.txt | while read eachline
do
tblnm=`echo $eachline | cut -d'_' -f3`
if
then stg_tblnm='PROVIDER_CONTRACT'
elif
then... (6 Replies)
Discussion started by: svks1985
6 Replies
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)