Grabbing value from file and run command in `` Post: 302886348

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Top Forums Shell Programming and Scripting Grabbing value from file and run command in `` Post 302886348 by sea on Thursday 30th of January 2014 09:21:33 PM

01-30-2014

Registered User

Using `` is 'old', use $() instead.

Your for loop copies the file you cat'ed output of 'file', defines the variable file by greping file (which you already cat'ed), and then copy file (which you cat'ed) as many times as entries are found in file (which you cat'ed) to test, overwrite 'test' as many times as entries were found.

Then you execute 3 files..
1) the file you cat'ed
2) and /tmp/[unix)$(date +y)log

Code:

for ENTRY in $(cat /some/file)
do
    workfile=$(grep -i key $ENTRY)
    cp ${workfile} test.$ENTRY
done

Assuming /some/file holds a list of diffrent files....
Now it sets the variable workfile to the content of the result of grep'ing key out of $ENTRY, and then copies the $workfile to the current path test.$ENTRY, where $ENTRY is the filename (if the (some/file contains other filenames/paths) of the file you grep'ed ALL lines containing the word 'key' in it.
At least it doesnt overwrite the file 'test' a dozen times anymore...

Can you elaborate a bit more of what you'd like to achieve?
For example with the logfiles and by the call of the 'file'?

EDIT:
Been late, of course, if test is a directory, all files are copied there.

Last edited by sea; 01-31-2014 at 01:20 AM..

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LEARN ABOUT LINUX

bzexe

BZEXE(1)						      General Commands Manual							  BZEXE(1)

NAME

       bzexe - compress executable files in place

SYNOPSIS

       bzexe [ name ...  ]

DESCRIPTION

       The  bzexe  utility  allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
       penalty in performance).  For example if you execute ``bzexe /bin/cat'' it will create the following two files:
	   -r-xr-xr-x  1 root  bin   9644 Feb 11 11:16 /bin/cat
	   -r-xr-xr-x  1 bin   bin  24576 Nov 23 13:21 /bin/cat~
       /bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file.  You can remove /bin/cat~ once  you  are	sure  that
       /bin/cat works properly.

       This utility is most useful on systems with very small disks.

OPTIONS

       -d     Decompress the given executables instead of compressing them.

SEE ALSO

       bzip2(1), znew(1), zmore(1), zcmp(1), zforce(1)

CAVEATS

       The  compressed	executable  is a shell script. This may create some security holes. In particular, the compressed executable relies on the
       PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep).

BUGS

       bzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually  in  some  cases,
       using chmod or chown.

																	  BZEXE(1)