mirror of
https://github.com/gnustep/libs-steptalk.git
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600de3ee1e
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/steptalk/trunk@13795 72102866-910b-0410-8b05-ffd578937521
194 lines
3.6 KiB
Text
194 lines
3.6 KiB
Text
Unix shell equivalents
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----------------------
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StepTalk is not meant to be used for tasks that can be done using ordinary Unix
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shells. But this does not mean, that it cannot be used for such tasks. In this
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file you may find list of unix commands and tasks and their Smalltalk
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equivalents.
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Contents:
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File Manipulation
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Output
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Paths and filenames
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Network
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Math
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Date and Time
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File manipulation
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-----------------
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> fm := NSFileManager defaultManager
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ls
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> (fm directoryContentsAtPath: '.') sortedArrayUsingSelector:#compare:
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pwd
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> fm currentDirectoryPath
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cd path
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> fm changeCurrentDirectoryPath: 'path'
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ln -s path other
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> fm createSymbolicLinkAtPath:'path' pathContent:'other'
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cp src dest
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> fm copyPath:'src' toPath:'dest' handler: nil
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cp file_list dest
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> file_list do: [ :file | fm copyPath:file toPath:'dest' handler: nil ]
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mv - as cp, movePath:toPath:handler:
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ln - as cp, linkPath:toPath:handler:
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rm - removeFileAtPath:handler:
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mkdir dir
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> fm createDirectoryAtPath:'dir' attributes:nil
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df path
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> fm fileSystemAttributesAtPath:'path'
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Output
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------
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echo 'string'
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> Transcript show:'string'
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cat file
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> Transcript show: (NSString stringWithContentsOfFile:'file')
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"write a string to a file"
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> ('string' writeToFile:'file' atomically:YES)
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"create a string from a fle"
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> str := NSString stringWithContentsOfFile:'file'
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Paths and filenames
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--------------------------------
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For more information, refer to the NSString documentation.
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NSString methods for path manipulation:
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- fileSystemRepresentation
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- isAbsolutePath
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- pathComponents
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- lastPathComponent
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- pathExtension
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- stringByAbbreviatingWithTildeInPath
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- stringByAppendingPathComponent:
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- stringByAppendingPathExtension:
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- stringByDeletingLastPathComponent
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- stringByDeletingPathExtension
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- stringByExpandingTildeInPath
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- stringByResolvingSymlinksInPath
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- stringByStandardizingPath
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- stringsByAppendingPaths:
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Examples:
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> path := '/usr/GNUstep/System/Applications/Ink.app'
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> path pathComponents
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(?) GSArray
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0 /
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1 usr
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2 GNUstep
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3 System
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4 Applications
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5 Ink.app
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> path lastPathComponent
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(?) Ink.app
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> path pathExtension
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(?) app
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In Smalltalk there is a symbolic selector '/' for NSString that is equivalent to
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the 'stringByAppendingPathComponent:'.
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> path := 'somePath'
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> filename := 'someFilename'
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> fullPath := path / filename
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Network
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-------
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localhost
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> NSHost currentHost name
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nslookup host_name
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> (NSHost hostWithName:'host_name') addresses
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nslookup host_address
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> (NSHost hostWithAddress:'host_address') names
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"download a file from the web"
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> data := NSData dataWithContentsOfURL:'url'
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> data writeToFile:'file' atomically:YES
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"read a file from the web"
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> string := NSString stringWithContentsOfURL:'url'
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Math
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----
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Just like in:
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> 1 + 1
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or in:
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> a := b * c
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Date and Time
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-------------
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date
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> NSDate date
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...or...
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date
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> NSCalendarDate date
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For more information read the NSDate and NSCalendarDate documentation
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NSCalendarDate methods:
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Creating a date
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+ calendarDate
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+ dateWithString:calendarFormat:
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+ dateWithString:calendarFormat:locale:
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+ dateWithYear:month:day:hour:minute:second:timeZone:
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Retrieving date elements
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- dayOfCommonEra
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- dayOfMonth
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- dayOfWeek
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- dayOfYear
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- hourOfDay
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- minuteOfHour
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- monthOfYear
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- secondOfMinute
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- yearOfCommonEra
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Adjusting a date
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- dateByAddingYears:months:days:hours:minutes:seconds:
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