Find Files in Linux

find -name 'mypage.htm'

In the above command the system would search for any file named mypage.htm in the current directory and any subdirectory.

find / -name 'mypage.htm'

In the above example the system would search for any file named mypage.htm on the root and all subdirectories from the root.

find -name 'file*'

In the above example the system would search for any file beginning with file in the current directory and any subdirectory.

find -name '*' -size +1000k

In the above example the system would search for any file that is larger then 1000k.

---

( expression )
True if expression is true.
! expression
Negation of a primary; the unary NOT operator.
expression [-a] expression
Conjunction of primaries; the AND operator is implied by the juxtaposition of two primaries or made explicit by the optional -a operator. The second expression shall not be evaluated if the first expression is false.
expression -o expression
Alternation of primaries; the OR operator. The second expression shall not be evaluated if the first expression is true.

find \( -name 'hello*' -a -name '*.sh' \)
find \( -name '*.sh' -o -name '*.txt' \)

---

對找到檔案做處理: -exec

有時我們會把找到的特定檔做特別的處理 ,像是刪除和移動就可以用 exec來處理
請看範例。請注意指令的後面要加 \; 來做結束

而此範例是把找到的檔案cp 到user的家目錄下的txt目錄裡面,在這裡的重點是 {}就是找到檔案的代號, 而exec 後面就是要操作的命令
find /tmp/ -type f -name "*.txt" -exec cp {} ~/txt \;

My First Makefile

[Makefile]
# Makefile Test
include FileList
CC = gcc
CFG = release
OBJS = $(addsuffix .o, $(basename $(SOURCE)))
EXE = hello

# release
CFLAGS_RELEASE = -O2
DFLAGS_RELEASE = LINUX OS_POSIX

# debug
CFLAGS_DEBUG =
DFLAGS_DEBUG = _DEBUG LINUX OS_POSIX

# switch CFG
ifeq ($(CFG), release)
CFLAGS = $(CFLAGS_RELEASE)
DFLAGS = $(addprefix -D, $(DFLAGS_RELEASE))
else
CFLAGS = $(CFLAGS_DEBUG)
DFLAGS = $(addprefix -D, $(DFLAGS_DEBUG))
endif

# make rules
all: $(EXE)

$(EXE): $(OBJS)
$(CC) $(CFLAGS) -o $@ $^

%.o: %.c
$(CC) $(CFLAGS) $(DFLAGS) -c $<

clean:
rm -f $(EXE) $(OBJS)

[filelist.sh]
#!/bin/sh
FileList=`find -name '*.c'`

echo "SOURCE =" '\'
for i in $FileList; do
echo $i '\'
done
echo