find . -iname "*.cc" -exec grep -Hin "thekeyword" {} \;
# -i to ignore case
# -H will print out the file name which matches to the filter
# -n will print out the matching line number
#if you want to use some filter containing escape char, use single quote
find . -name "*.cc" -exec grep 'setData(\"Pass' {}\;
#to count the number of occurrence of certain word/pattern in vim
:%s/pattern//gn
# to count number of files in a directory
find . -type f | wc -l
# to change command prompt to { $user_name+@+$hostname +":" + $cwd> }
set prompt="\n%{\033[0;32m%}%n@%m:
# to use backspace to delete
stty erase ^H
# to pipe error and cout to file; for tcsh and csh only
./genKB_DA.sh >& ./log.txt
# about FTP downloading
use 'hash' to show download progress
use 'prompt' to turn off the 'y/n' prompt which blocks mget
# to check linux kernel version
uname -r
# to check red-hat version
cat /etc/redhat-release
# log in first as 'test' user, and then type the following to allow any user to access current x11 display
xhost +localhost
# to batch delete files based on strings in a file
xargs rm < ../fxxTN1.txt
