Visit Our UNIX and Linux User Community


complex find command


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users complex find command
# 1  
Old 10-22-2009
complex find command

Hi all,
I am trying to execute the following command:
Code:
find 'path' -ls -exec cksum {} \;

As you can see this simply finds files from a given path and runs cksum on them.
My problem is this, if i have a FIFO in a directory the find tries to execute cksum on it and gets stuck.
From the man page i understood that i cannot use -type and -exec together
so i am quite stuck here.
any ideas?
# 2  
Old 10-22-2009
Hi.

Quote:
From the man page i understood that i cannot use -type and -exec together
You can indeed use type and exec together.
Code:
find 'path' -type f -ls -exec cksum {} \

# 3  
Old 10-22-2009
The man page of which OS gave you that idea? I just checked on HP-UX and Linux, and neither -type nor -exec are mentioned in the description of the other. Just try it.
# 4  
Old 10-22-2009
Thank you for answering,
It is possible to use them together but when you use them together it is undefined who goes first. Sometimes first the type will be checked and then the exec activted and sometimes the other way around.

---------- Post updated at 06:53 AM ---------- Previous update was at 06:52 AM ----------

the solaris man page.
Solaris 5.10

---------- Post updated at 06:54 AM ---------- Previous update was at 06:53 AM ----------

Code:
Using -type is not sufficient to restrict the  type
     of  files on which the -exec command operates, because there
     is an inherent race condition between  the  type-check  per-
     formed by the find command and the time the executed command
     operates on the file argument.

---from the man page
# 5  
Old 10-22-2009
Hi.

The exec will be done depending on its place in the command. If you put it after the directory, filename, and type, etc. then it will after those are evanulated.

I've never experienced where the order is "underfined".
# 6  
Old 10-22-2009
Thank you scottn i will try it
# 7  
Old 10-22-2009
All variants of find I've encountered so far were left-associative, meaning the expressions were applied from left to right (following boolean order)

---------- Post updated at 14:09 ---------- Previous update was at 14:07 ----------

I think the race condition mentioned means that there is no guarantee that between the type check and the exec the entry doesn't change.

Previous Thread | Next Thread
Test Your Knowledge in Computers #78
Difficulty: Easy
Linux was inspired by MINIX
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Complex grep command

Hallo Team, I need your help and its rather urgent. I have a file with thousands of lines. Here is a sample below: Sample1.txt BW235045560121114833444044@196.35.130.5 BW235106757121114-574455394@196.35.130.5 BW2349514941211141077771352@196.35.130.5... (5 Replies)
Discussion started by: kekanap
5 Replies

2. Shell Programming and Scripting

Complex find and replace only 1st instance string with dynamic combination

test.txt is the dynamic file but some of combination are fix like below are the lines ;wonder_off = ;wonder_off = disabled wonder_off = wonder_off = disabled the test.txt can content them in any order #cat test.xt ;wonder_off = ;wonder_off = disabled wonder_off = wonder_off =... (5 Replies)
Discussion started by: SilvesterJ
5 Replies

3. UNIX for Advanced & Expert Users

Help with complex find syntax

I need to modify the find command below to exclude the output of the directory /usr/UDPM/PerfMgmt/shmlck find / \( -fstype ctfs -o -fstype mntfs -o -fstype objfs -o -fstype proc -o ! local \) -prune -o -type f -perm -0002 -print 2>/dev/null I have tried many iterations and placement of... (2 Replies)
Discussion started by: interesting?
2 Replies

4. Shell Programming and Scripting

find command with complex logic

I'm looking to write a script that will do a find of directories and delete them if they are older than x days but keep the last x # of folders even if they are older than x days. The usage is for a deployment location, so we want to keep the location clean but retain maybe the last 2 builds that... (5 Replies)
Discussion started by: MaureenT
5 Replies

5. Shell Programming and Scripting

pls help! complex find and replace

help pls... i would like to change this CURVE2 565489 789458 1258649 random data here... CURVE2 565489 568795 6548921 random data here... CURVE2 565489 123598 6446259 random data here... CURVE2 565489 672956 2489657 into this CURVE2 565489 586423 1258649 random data here...... (2 Replies)
Discussion started by: lakanino
2 Replies

6. Shell Programming and Scripting

complex find in script

How to I put my find command string into a script. It is currently to long to be entered manually at command line. for FNAME in `find /unixsxxx/interface/x.x/xxxxxx -type f \( -name '*.KSH' -o -name '*.sh' -o -name '*.sql' -o -name '*.ksh' \) -exec grep -il xxx.xxx.xxx.xxx {} \;`; do C=`grep -c... (5 Replies)
Discussion started by: TimHortons
5 Replies

7. Shell Programming and Scripting

Complex find grep or sed command

Haven't worked in bash for ages. did a good bit of shell scripting in regular sh, but have forgotten most of it. I have several thousand php files that now include the following line at the end of the file. There is no LF or CR/LF before it begins, it is just concatenated to the final line of... (3 Replies)
Discussion started by: sjburden
3 Replies

8. Shell Programming and Scripting

complex grep command

hi all i have file call "list.log" which contains like this 00300 000024501043846 0 00300 000034531322871 0 00600 000000489100734 0 and so on .. the file goes like this:(example first row) from position 1-5 the lider number(300),position 7-21 id... (0 Replies)
Discussion started by: naamas03
0 Replies

9. Shell Programming and Scripting

complex command substitution

hi, I have to execute this line below from within a shell script; simply backquoting it is not doing the trick; it is mangling up all the options; but when i type it out on a command line, it executes cleanly. Please help me in getting this right; $ vlc -I dummy --sout='#transcode{vcodec=mp4v,... (5 Replies)
Discussion started by: spopuri
5 Replies

10. Answers to Frequently Asked Questions

advanced/complex uses of the find command

Perhaps the number one advanced find question is: How to stop find from descending into subdirectories? find command Performing a non-recursive find in Unix Use -prune with find command on AIX Searching for files over 30 days old in current directory disk space used for files with in a... (0 Replies)
Discussion started by: Perderabo
0 Replies

Featured Tech Videos