과거 일자 출력
[Linux]
1) date -d '12 hours ago' +%Y%m%d
2) date -d yesterday +%F
=>
[Solaris Unix]
1) perl -e 'use POSIX qw (strftime);print strftime "%Y%m%d\n",localtime (time ()-3600*12);'
2) perl -e 'use POSIX qw (strftime);print strftime "%Y%m%d\n",localtime (time ()-3600*24);'
2) perl -e 'use POSIX qw (strftime);print strftime "%Y%m%d\n",localtime (time ()-3600*24);'
grep 위, 아래 줄 출력
[Linux]
3) grep 'SEARCH_PATTERN' -ANN2 -BNN1 FILENAME
=>
[Solaris Unix]
3) set cur_file='FILENAME';grep -n 'SEARCH_PATTERN' $cur_file|cut -d':' -f1|xargs -i sh -c 'ln={};echo "[$ln line 시작]";sed -n "`expr $ln - NN1`,`expr $ln - NN2`p" $0;echo "[$ln line 끝]";echo;' $cur_file;