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Full Discussion: searching if the file exists
Top Forums Shell Programming and Scripting searching if the file exists Post 302416170 by prachiagra on Sunday 25th of April 2010 09:52:03 AM
Old 04-25-2010
searching if the file exists

Hi All,

I want to search multiple files but i dont know their exact names

ls -ltr a*
a1.240410
a2.240410
a3.240410
a4.240410

these file names keep changing acco to date or randomly

so I wanna check if any file with a* exists and then perform an actiion

I was trying

Code:
 
if [ -e "a*" ]; then
....
..
fi

but looks like with if i hav to give complete file name like
if [ -e a1.240410 ]

please help.. I wanna check if a* files exist . thanks!

---------- Post updated at 09:52 AM ---------- Previous update was at 09:45 AM ----------

Also if i try to do ls -ltr a* and if no files exist then i dont want any error like " no such file or directory"

like

(ODSSmilierd)/home/r104809> ls -ltr proc* | wc -l
proc*: No such file or directory
0

I dont want this error I just need the count 0

what change will help me?
Thanks guys!!
 

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TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME
truncate - shrink or extend the size of a file to the specified size SYNOPSIS
truncate OPTION... FILE... DESCRIPTION
Shrink or extend the size of each FILE to the specified size A FILE argument that does not exist is created. If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole) reads as zero bytes. Mandatory arguments to long options are mandatory for short options too. -c, --no-create do not create any files -o, --io-blocks treat SIZE as number of IO blocks instead of bytes -r, --reference=FILE use this FILE's size -s, --size=SIZE use this SIZE --help display this help and exit --version output version information and exit SIZE may be (or may be an integer optionally followed by) one of following: KB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y. SIZE may also be prefixed by one of the following modifying characters: `+' extend by, `-' reduce by, `<' at most, `>' at least, `/' round down to multiple of, `%' round up to multiple of. Note that the -r and -s options are mutually exclusive. AUTHOR
Written by Padraig Brady. REPORTING BUGS
Report truncate bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report truncate translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
dd(1), truncate(2), ftruncate(2) The full documentation for truncate is maintained as a Texinfo manual. If the info and truncate programs are properly installed at your site, the command info coreutils 'truncate invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 TRUNCATE(1)
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