06-06-2005
find . -name H* -exec ls -l {} \; executes the command ls -l on each individual file.
find . -name H* | xargs ls -l constructs an argument list from the output of the find commend and passes it to ls.
consider if the ouput of the find command produced:
H1
H2
H3
the first command would execute
ls -l H1
ls -l H2
ls -l H3
but the second would execute
ls -l H1 H2 H3
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
What is the difference between sourcing a script, running it or execing it? (1 Reply)
Discussion started by: 98_1LE
1 Replies
2. Shell Programming and Scripting
Hi
I need to move multiple (say 10 files) from one location to another location. My selection would be like this...
ls -ltr *.arc | head ---> Need to move top 10 files with single command without iterating in loop. I know we can move files like this with find command but not sure if I can... (4 Replies)
Discussion started by: malaymaru
4 Replies
3. Shell Programming and Scripting
What I'm trying to do is perform a copy, well a ditto actually, on the results of a find command, but some inline string substitution needs to happen.
So if I run this code find ./ -name "*.tif" I get back these results.
.//1234567.tif
.//abcdefg.tif
Now the action from exec or xargs I... (2 Replies)
Discussion started by: myndcraft
2 Replies
4. AIX
Hi ,
Can somebody explain what is the difference in the below commands.. when using Xargs its giving all the hidden files and is it something xargs will do recursive searching or parsing ?
find . -type f -links 1 | xargs ls -li
find . -type f -links 1 | ls -li (1 Reply)
Discussion started by: Karthikeyan K
1 Replies
5. Shell Programming and Scripting
Hey all. Just a fast question, what is the technical difference between using back ticks and using xargs to perform a command?
Here's an example
Find /mydir -name *.conf |xargs rm
Vs
Rm 'find /mydir -name *.conf'
Is there a performance hit? I know they do the same thing but which is... (1 Reply)
Discussion started by: msarro
1 Replies
6. Programming
I have read several docs on these on the web and looked at examples. I can't figure out the difference. In some cases you use one or the other or you combine them.
can someone help me understand this? (1 Reply)
Discussion started by: guessingo
1 Replies
7. Shell Programming and Scripting
I have the following bash script lines in a file named test.sh.
#!/bin/bash
#
# Write Date to cron.log
#
echo "Begin SSI Load $(date +%d%b%y_%T)"
#
# Get the latest rates file for processing.
#
d=$(ls -tr /rms/data/ssi | grep -v "processed" | tail -n 1)
filename=$d
export filename... (3 Replies)
Discussion started by: ginowms
3 Replies
8. Shell Programming and Scripting
Hi All,
i'm trying to create a tar of all the .txt files i find in my dir . I've used xargs to acheive this but i wanted to do this with exec and looks like it only archives the last file it finds . can some one advice what's wrong here :
find . -type f -name "*.txt" -print0 | xargs -0... (9 Replies)
Discussion started by: Irishboy24
9 Replies
9. Shell Programming and Scripting
Hi,
What is the difference between the following commands
find . -type f -exec grep 'abc' {} \;
and
find . -type f | xargs grep 'abc'
Appreciate your help. (2 Replies)
Discussion started by: bobbygsk
2 Replies
10. Shell Programming and Scripting
Hello,
I am trying to move all the file listed by below command to /tmp/testing directory
find ./ -maxdepth 1 -type f -mtime +3
I tried using -exec and xargs - none of the combination is working?
Please, help (3 Replies)
Discussion started by: saurabh84g
3 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)