smartzip

anything without the sum or operator, but it is much more convenient to use the sum or operator. A case expression can be used to match a given string, not a number. Case... in ...) Do something here ;; Esac Let's look at an example. The file command can identify the file type of a given file, for example: File lf.gz This will return: Lf.gz: gzip compressed data, deflated, original filename, Last modified: Mon Aug 27 23:09:18 2001, OS: Unix We use this to write a script named

The case expression can be used to match a given string, not a number (do not confuse switch... case in C ). Case... in...) do something here esac The file command can identify the file type of a given file, for example, file lf.gz. The output result is: Lf.gz: gzip compressed data, deflated, original filename, last modified: Mon Aug 27 23:09:18 2001, OS: Unix We use this to write a script named smartzip, which can automatically decompress Bzip2,

here ;; Esac Let's look at an example. The file command can identify the file type of a given file, for example: File lf.gz This will return: Lf.gz: gzip compressed data, deflated, original filename, Last modified: Mon Aug 27 23:09:18 2001, OS: Unix We use this to write a script named smartzip, which can automatically decompress bzip2, gzip, and zip compressed files: #! /Bin/sh Ftype = 'file "$1 "' Case "$ ftype" in "$1: Zip archive "*) Unzip "$1 ";;

: File lf.gz This will return: Lf.gz:gzip compressed data, deflated, original filename, Last Modified:mon 23:09:18 2001, Os:unix We use this to write a script called Smartzip, which automatically extracts compressed files of bzip2, gzip, and zip types: #!/bin/sh Ftype= ' file ' $ "' Case ' $ftype ' in "$1:zip Archive" *) Unzip "$";; "$1:gzip Compressed" *) Gunzip "$";; "$1:bzip2 Compressed" *) Bunzip2 "$";; *) Error "File" can not is uncompressed with

files for a given file, such as: File lf.gz This will return: Lf.gz:gzip compressed data, deflated, original filename, Last Modified:mon 23:09:18 2001, Os:unix We use this to write a script called Smartzip, which automatically extracts compressed files of bzip2, gzip, and zip types: #!/bin/sh Ftype= ' file ' $ "' Case ' $ftype ' in "$1:zip Archive" *) Unzip "$";; "$1:gzip Compressed" *) Gunzip "$";; "$1:bzip2 Compressed" *) Bunzip2 "$";; *) Error "Fi

: -Print the error message. -Exit the program. We use curly braces to put the two commands together as one command in the form of an anonymous function. The common function will be explained later. We can use the if expression to accomplish anything without the use of and or operators, but the use of and or operators is much more convenient. [Edit] Case statement The case expression can be used to match a given string, not a number (do not co

curly braces to put the two commands together as one command in the form of an anonymous function. General functions will be mentioned below. We can use the if expression to do anything without the sum or operator, but it is much more convenient to use the sum or operator. A case expression can be used to match a given string, not a number. Case... in...) Do something here ;;Esac Let's look at an example. The file command can identify the file type of a given file, for example: File lf.gz This

mailfolder is readable. If it is readable, it prints a line of "from" in the file. If it is not readable or the operation takes effect, print the error message and exit the script. There is a problem here, that is, we must have two commands:-Print the error message.-Exit the program.We use curly braces to put the two commands together as one command in the form of an anonymous function. General functions will be mentioned below. We can use the if expression to do anything without the sum or ope

readable or the operation takes effect, print the error message and exit the script. Note that the following two commands must be used: -Print the error message. -Exit the program. We use curly braces to put the two commands together as one command in the form of an anonymous function. The common function will be explained later. We can use the if expression to accomplish anything without the use of and or operators, but the use of and or operators is much more convenient.3. Case statement The

smartzip, which can automatically decompress bzip2, gzip, and zip compressed files: #! /Bin/sh Ftype = 'file "$1 "' Case "$ ftype" in "$1: Zip archive "*) Unzip "$1 ";; "$1: gzip compressed "*) Gunzip "$1 ";; "$1: bzip2 compressed "*) Bunzip2 "$1 ";; *) Echo "File $1 can not be uncompressed with smartzip ";; Esac You may notice that we use a special variable $1 here. The variable contains the first paramet

write a script named smartzip, which can automatically decompress Bzip2, Gzip, and zip compressed files: #!/bin/bash ftype="$(file "$1")" case "$ftype" in "$1: Zip archive"*) unzip "$1";; "$1: gzip compressed"*) gunzip "$1";; "$1: bzip2 compressed"*) bunzip2 "$1";; *) echo "File $1 can not be uncompressed with smartzip";; esac You may notice that a special variable $1 is used above, which contain