Linux Common commands-Text processing CUT,SORT,UNIQ,WC,TR

Cut: Intercepting text-specific fields

NAME
Cut-remove sections from all line of files

-D,--delimiter=delim (Specify field delimiter, default is space)

Use DELIM instead of the TAB for field delimiter

-F,--fields=list (Specifies the field to display)

Select only these fields; Also print any line that contains no delimiter character,
Unless the-s option is specified
-F 1,3
-F 1-3

[Email protected] ~]$ CAT/ETC/PASSWD
Root:x:0:0:root:/root:/bin/bash
Bin:x:1:1:bin:/bin:/sbin/nologin
Daemon:x:2:2:daemon:/sbin:/sbin/nologin
Adm:x:3:4:adm:/var/adm:/sbin/nologin
Lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
Sync:x:5:0:sync:/sbin:/bin/sync
Shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown

[Email protected] ~]$ cut-d:-f1/etc/passwd
Root
Bin
Daemon
cd/
Lp
Sync
Shutdown

Sort: Text sort, in ASCII

NAME
Sort-sort lines of text files

Synopsis
Sort [OPTION] ... [FILE] ...
Sort [OPTION] ...--files0-from=f

[email protected] ~]$ cat Sort.txt
3
5
1
4
9
[Email protected] ~]$ sort Sort.txt
1
3
4
5
9
[Email protected] ~]$

-N,--numeric-sort (numeric sort)
Compare according to string numerical value

-R,--reverse (reverse sort)
Reverse the result of comparisons

[Email protected] ~]$ sort-r sort.txt
9
5
4
3
1
[Email protected] ~]$

-T,--field-separator=sep (field delimiter)
Use SEP instead of Non-blank to blank transition

-K,--key=pos1[,pos2] (keywords to sort)

Start a key at POS1 (Origin 1), end it at POS2 (default end of line)

[Email protected] ~]$ sort-t:-k3-n/etc/passwd
Root:x:0:0:root:/root:/bin/bash
Bin:x:1:1:bin:/bin:/sbin/nologin
Daemon:x:2:2:daemon:/sbin:/sbin/nologin
Adm:x:3:4:adm:/var/adm:/sbin/nologin
Lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
Sync:x:5:0:sync:/sbin:/bin/sync
Shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
Halt:x:7:0:halt:/sbin:/sbin/halt
Mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
Uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin
Operator:x:11:0:operator:/root:/sbin/nologin
Games:x:12:100:games:/usr/games:/sbin/nologin
Gopher:x:13:30:gopher:/var/gopher:/sbin/nologin
Ftp:x:14:50:ftp User:/var/ftp:/sbin/nologin

-U,--unique (delete duplicates)
With-c, check for strict ordering; Without-c, output only the first of the equal run

[email protected] ~]$ cat Sort.txt
3
5
1
4
43
9
4
11
[Email protected] ~]$ sort-u sort.txt
1
11
3
4
43
5
9

Uniq: Show or ignore duplicate rows

NAME
Uniq-report or omit repeated lines

-D,--repeated (only duplicate rows are displayed)
Only print duplicate lines

[Email protected] ~]$ Uniq sort.txt
3
5
1
4
43
9
4
11
[Email protected] ~]$ uniq-d sort.txt
3
1
[Email protected] ~]$

-D,--all-repeated[=delimit-method] (show all duplicates)
Print all duplicate lines Delimit-method={none (default), prepend,separate} delimiting are
Done with blank lines.

[Email protected] ~]$ uniq-d sort.txt
3
3
1
1
[Email protected] ~]$

-C,--count (shows the number of times the file line repeats)
Prefix lines by the number of occurrences

[Email protected] ~]$ uniq-c sort.txt
2 3
1 5
2 1
1 4
1 43
1 9
1 4
1 11
[Email protected] ~]$

WC: Show the number of rows in a file/number of words/bytes

NAME
Wc-print newline, Word, and byte counts for each file

Synopsis
WC [OPTION] ... [FILE] ...
WC [OPTION] ...--files0-from=f

-L,--lines
Print the newline counts

[Email protected] ~]$ Wc/etc/fstab
805/etc/fstab
[email protected] ~]$ man WC
[Email protected] ~]$ wc-l/etc/fstab
15/etc/fstab

-W,--words
Print the word counts

[Email protected] ~]$ Wc/etc/fstab
805/etc/fstab

[Email protected] ~]$ wc-w/etc/fstab
78/etc/fstab
[Email protected] ~]$

-C,--bytes
Print the byte counts

[Email protected] ~]$ Wc/etc/fstab
805/etc/fstab

[Email protected] ~]$ wc-c/etc/fstab
805/etc/fstab

-L,--max-line-length (maximum number of characters in line)
Print the length of the longest line

[Email protected] ~]$ wc-l/etc/fstab
93/etc/fstab

TR: convert or delete characters

NAME
Tr-translate or delete characters

Synopsis
TR [OPTION] ... SET1 [SET2]

[[Email protected] ~]$ TR ' AB ' AB '
Abc
Abc
Able
ABle
Again
AgAin
^c
[Email protected] ~]$

[[Email protected] ~]$ TR ' A-Z ' A-Z ' </etc/passwd
Root:x:0:0:root:/root:/bin/bash
Bin:x:1:1:bin:/bin:/sbin/nologin
Daemon:x:2:2:daemon:/sbin:/sbin/nologin
Adm:x:3:4:adm:/var/adm:/sbin/nologin
Lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
Sync:x:5:0:sync:/sbin:/bin/sync
Shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown

-D,--delete (delete character set)
Delete characters in SET1, does not translate

[[email protected] ~]$ tr-d ' AB '
alb^h^h^[[3~^[[3~
‘
‘
Able
Le
A

Enable
Enle

Linux Common commands-Text processing CUT,SORT,UNIQ,WC,TR