Commands for file compression:
In this File Compression commands we will explain about the compress and uncompress of a file while compress of a file it takes less space on the disk it contain with dot extension file names is .gz
gzip - it will compress the files and takes less space in the disk and .gz is the file extention
gzip filename.a it will compress the filename.a
guzip - it will uncompressed the files which is compressed by gzip
guzip filename.a it will uncompress the filename.a
In this File Compression commands we will explain about the compress and uncompress of a file while compress of a file it takes less space on the disk it contain with dot extension file names is .gz
gzip - it will compress the files and takes less space in the disk and .gz is the file extention
gzip filename.a it will compress the filename.a
guzip - it will uncompressed the files which is compressed by gzip
guzip filename.a it will uncompress the filename.a
Commands for File text manipulation:
In this File Text Manipulation Commands we can cut the columns and fields, we can paste the files and we can merge the two files into one single file. We can sort the order of a file with non-redundancy and also search for matching lines with one or more characters.
cut- it is used to extract specific columns from the file
cut-c it cuts the columns
cut –f it cuts the fields
paste – it is used to paste the files
paste file.a file.b it will join the two files into single file
sort – it used for ordering of a file
sort – file.a it displays only numbers in curous result
sort –n file.a it displays only numbers in ascending order
unique - it fetches one copy of each record or it provides only unique files
unique –u it select only the non-repeated lines
tr - it will translating character
tr –cd it complements the set of characters in the expression
tr –c it compressing the multiple consecutive character
tr –d it will delete character in a file
grep – it will search text for matching lines
grep “nfs” /etc/services it will check any no. of lines that contain the string “nfs” in the file /etc/services and display only those lines
grep string filename.a it will search the string in a filename.a
grep –c it display count of no.of occurrences
grep –l it display list of filenames only
grep –n it displays line number along with lines
grep –h it omits filenames when it contain multiple lines
egrep – it the extending of grep
egrep ch+ it match with one or more character
egrep ch? it matches with zero or one character
egrep exp1| exp 2 it match with expression exp1 or exp2
fgrep – it is multiple string searching
In this File Text Manipulation Commands we can cut the columns and fields, we can paste the files and we can merge the two files into one single file. We can sort the order of a file with non-redundancy and also search for matching lines with one or more characters.
cut- it is used to extract specific columns from the file
cut-c it cuts the columns
cut –f it cuts the fields
paste – it is used to paste the files
paste file.a file.b it will join the two files into single file
sort – it used for ordering of a file
sort – file.a it displays only numbers in curous result
sort –n file.a it displays only numbers in ascending order
unique - it fetches one copy of each record or it provides only unique files
unique –u it select only the non-repeated lines
tr - it will translating character
tr –cd it complements the set of characters in the expression
tr –c it compressing the multiple consecutive character
tr –d it will delete character in a file
grep – it will search text for matching lines
grep “nfs” /etc/services it will check any no. of lines that contain the string “nfs” in the file /etc/services and display only those lines
grep string filename.a it will search the string in a filename.a
grep –c it display count of no.of occurrences
grep –l it display list of filenames only
grep –n it displays line number along with lines
grep –h it omits filenames when it contain multiple lines
egrep – it the extending of grep
egrep ch+ it match with one or more character
egrep ch? it matches with zero or one character
egrep exp1| exp 2 it match with expression exp1 or exp2
fgrep – it is multiple string searching
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