The command below does not work. what I am doing wrong ?
For some reason second part of the xargs command is not does what I expect
If I get this working I intend to use it for multiple file rename later.
with set -x
Thanks
Quote:
Originally Posted by ahmad.diab
your code is missing {} after -I see below :-
BR
{} is not expanded by the shell. It is expanded by xargs after it starts executing. However, xargs cannot be exec'd until all of its command line arguments are known. This requires the shell to invoke a subshell to perform the command subsitution in backticks. Note that at this point xargs is not running. echo {} will always yield nothing but {}. In AWK, the sub() function has nothing to do since there's no DP1 to replace, and the output is the same as what's echoed. Then the shell, finally knowing the result of the command substitution, can execute xargs. xargs will then always be passed {} {} as its final two parameters.
Hi Everybody,
Can you explain the difference between the following commands:
1. find . -print|xargs grep -i dba_2pc_pending
2. find . -print|grep -i dba_2pc_pending (5 Replies)
Hello,
I'm on a mac trying to have the follow cmd list the files after touch, but very unsuccessful. Please can you help.
sort $BOTHFILE | uniq -u | xargs -I {} -t touch {} >> $LOGFILE ;
BOTHFile contents in form of
/directory/file.txt
thanx (3 Replies)
my task : tar up large bunch of files(about 10,000 files) in the current directories that created more than 30 days ago
but it come with following error
find ./ -ctime +30 | xargs tar rvf test1.tar
tar: test1.tar: A file or directory in the path name does not exist. (3 Replies)
what is the real use of xargs command ..?
ls -tr |xargs -I{} rm -f {}
....can any one tell me what is the significance of {} curly brackets in this command (1 Reply)
Hi
I am trying to use "xargs" command to loop through each file, modify it and overwrite the old file with the modification but with the same file name.
I thought it is easy but I just can't get it to work
I tried the following
I thought {} would give me the current file name, but it... (1 Reply)
Hi,
What is the difference in capitalizing the option 'i' of xargs command, (i.e) xargs -i and xargs -I?
Also, what is the difference between the below 2 commands?
output_from_cmd | xargs -I {} grep '{}' file
output_from_cmd | xargs -I grep '{}' file
Any efficiency or performance... (4 Replies)
ls -lrt | awk '$7==12{print $9}' | xargs -i mv {} $dir
i executed this command but $dir does not exists.......
and the files hv been moved but i dont know where .....
plz help(ASAP)
thanks in advance. (8 Replies)
xargs work great when a command gives multiple line output which can be input to another. In my case it is not working coz the second command uses two words in it.
$ scr.sh
gives output like
193740
638102
375449
..
..
another command takes these number as inputs. it works great... (1 Reply)
ls | grep -E '^+$' | xargs --verbose -I{} rm -vfr "{}";
When i execute the command it works fine by removing the directories and its writing the output as below about which files are deleting.What i want know is,is there any XARGS command option that it should done silently in background with... (2 Replies)
Hi,
I am working on a file copier utility where I have written the copy commands to a batch file e.g. file_copier.bat which i pass to xargs command as follows.
cat file_copier.bat | xargs -n 1 -P 40
I also want to record the copy command status of each file/command in the form "command... (1 Reply)