Linux常用命令学习笔记（一）
ls: list files and dirs in current dir
- -a display all files
- -l display in list
- -t sort by edit time
mv: move / rename
- mv source target
cp: copy files / dirs
- -a copy all properties
- -r recursion
- -f forcible
- scp: remote copy
scp source target - file: judge file type
rm remove file
- -rf recursion and forcible
- touch: create new file or update file time
- cd: change current dir
- mkdir: create new dir
-p recursion
-m dir permission - rmdir: remove empty dir
echo: display content
- -e escape string
cat: display or combine file
- -n display line numbers
- cat file1 > file2 : combine file1 to file2
- more/less: display file
- nl: display file with line numbers
- head: display several lines at the beginning of file
- tail: display several lines at the end of file
- which: locate command dir
- whereis: display command location, source code, help file location
find
- -o combine two paras
- -name figure the file name
- -iname similar to -name, ignore low/upcase
- ! not
-type file type
- f normal
- l linking
- d dir
- -maxdepth the maximumal depth of dir
-size figure size of file
- +10k: >10k
- -10k: <10k
- 10k: ==10k
- -empty empty file
- -delete delete found files
- -user
- -exec execute commands
grep: regular expression
- -v reverse
- -o only output matched text
- -E use extended regular expression
- -c count number of matched lines
- -n display line numbers of matched line
seq: generate sequence
- -f format
- -s separator
- -w same width (add "0")
wc: count file number of lines and words
- -c display bytes
- -l display line numbers only
- -w display word number only
tar
- -c create new backups
- -v display the progress
- -f filename
- -z gzip
- -j bzip
- -x uncompress
- -C figure a dir
- gzip, bzip2, xz
- last: display rencent user login information
- lastlog: display all users' latest login information
- history: display recent commands
sort: sort txt
- -u ignore same lines
- -k column of sort key
- -t separator between columns
- uniq: ignore same lines in txt