fs

#!/bin/csh -f

set se=`grep "KEY" data_coll/* | wc -l`
set se=`expr $se + 1`
set se=`expr $se + 2`
echo $se

현재 디렉토리에서 Makefile 만 묶기

tar cvf each_file_20061013.tar `find . -name 'Makefile'`

http://suite.tistory.com/  fs

CShell & Boune & Bash Shell DATE 포멧 문자열 파싱?

- CShell

 #!/bin/csh
 set dynamic_date=`date '+%Y%m%d%H%M%S'`
 set SUB_DATE=`echo ${dynamic_date} | awk '{print substr($1,0,10)}'`
 echo $SUB_DATE

- Bourne Shell

 #!/bin/sh
 dynamic_date=`date '+%Y%m%d%H%M%S'`
 echo $dynamic_date
 SUB_DATE=`expr substr $dynamic_date 1 6`
 echo $SUB_DATE

- Bash Shell

 #!/bin/bash
 dynamic_date=`date '+%Y%m%d%H%M%S'`
 echo $dynamic_date
 SUB_DATE=${dynamic_date:0:6}
 echo $SUB_DATE

http://suite.tistory.com/ fs (2006.7.28)

일반 계정으로 find / 검색시

==========================================

find: /etc/pki/CA: 허가 거부됨
find: /etc/lvm/backup: 허가 거부됨
find: /etc/lvm/archive: 허가 거부됨
~~~~~

find: cannot search /etc/ftpd/pids
find: cannot open /etc/opt/resmon/pipe

===========================================

등의 stderr 메시지를 볼수 있는데 이것들을 안볼려면  > 과 /dev/null 로 처리하면 된다.

bash 경우

ex) find / -name "find_str"  2>/dev/null

0 : stdin

1:  stdout

2:  stderr

참고:

http://wiki.kldp.org/wiki.php/DocbookSgml/Bash-Prog-Intro-HOWTO#AEN55