备份Unix\Eclipse等常用命令

 

 

			Sample:
	rm	remove files(remove directory -rf)	rm -rf tset
	mkdir	make directory	mkdir test
	chmod	change mode	chmod 755 *.ksh
	mv	move file	mv lujinan.txt test/
	mv	rename file	mv lujinan.txt lujinan.txt.858
	grep	search file context	grep 'for' ./*
	sed	text process
	>	redirect output &clear file content	echo "abc" > test.txt & >filename
	>>	append	echo "abc" >> test.txt
	cat	check the file contents	cat test.ksh
	less	per line	less test.ksh
	more	per screen	more test.ksh
	<	redirect input
	awk		ls -l|awk '{print $1}'
	cp	copy file	cp /home/userId/a.txt b.txt
	scp	copy file from other server to current server	scp $userId@otherServerName:/home/userId/a.txt /home/userId/b.txt
	control + insert	COPY
	shift + insert	PASTE
	control + c	stop the running shell
	~	$HOME
	.	current directory
	/	root
	touch	create 'dstamp" file and create time is May 4 21:40	touch -t 05042140 dstamp
	find	find directory and files	LINUX_and_UNIX_SHELL_program->002.pdf	find pnl*
			find . -name fileName* -exec ls -ltr {} \;
	tail		tail -f fileName 动态输出文件尾部内容
	diff	c	compare
		a	after >
		d	before <
	wc	count the file lines
process	ps	use ps to see the processes that you are running
	bg	use ctrl-Z to suspend the foreground task, and then use bg.
	fg	use fg to move a background task to foreground
	kill	kill [-<signal>] <pid>	kill -9 <pid> 强制杀死进程
	killall	killall [-<signal>] <command>
	Commands that tell you who you are:
	whoami	displays your username
	id	displays your username and groups
	Commands that tell you who others are:
	finger [<name>]	displays info for <name>
	id [<username>]	displays info for <username>
	Commands that change who you are:
	su <username>	“switch user” to <username>
	df	(disk free)display the amount of available disk space for filesystems
	login	login as a different user
	To view a single environment variable’s value:
		echo $<name >
	For example:
		echo $HOME
	To view all environment variables at once:
	sh/ksh: set
	tcsh/csh:
	setenv < name > <value>
	Example: setenv AA aa
	bash/ksh:
	export < name >=<value>
	There is no space on either side of ‘=’!
	Example: export AA=aa
	sh:
	< name >=< value >; export < name >
	Aliases
	Syntax:
	bash/ksh:
	alias <text >=’< replacement >’
	tcsh/csh
	alias <text > ’< replacement >’
Eclipse	Ctrl+ H	File content search
	Ctrl+ space	sysout->System.out.println();
	Ctil+Shift+f	format codes
	Ctil+Shift+t	find the jar package
	ls -t1|head -n 1	find the best new file	ls pnl.*
	ksh: diff_nameWithJob.ksh: No such file or directory	need to convert to Unix format
	number=`expr $number + 1`	calculate number
Flex&Eclipse
	Ctrl+Shift+c	/*  */ comment code