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11-18-2008
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About \ (Back slash)
Hi All,
print "path/executable_file parameters" \ > path/file1 print "path/executable_file parameters" \ > path/file2 print "path/executable_file parameters" \ > path/file3 chmod 775 path/file1 \ path/file2 \ path/file3 could you please let me know how the back slash will be useful and its effect in using in the shell script. please explain how its working in the above print and chmod. i read some documents about back slash "preceding the same string with a backslash, \, also removes the special meaning of a character, or string". i am not getting what it is actually doing. please let me know. Thanks. |
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11-18-2008
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Hi vbe,
Thanks for your update. i read some documents about back slash, i am not clear with the below statement "preceding the same string with a backslash, \, also removes the special meaning of a character, or string". what it means. |
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11-18-2008
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There are some special characters in Unix for ex :" $ & \ ~"
putting a \ before a special character inverts the special meaning of a character. so it is getting a simple ascii text Code:
sptmw@mwvm:~$ echo ~ /home/sptmw sptmw@mwvm:~$ echo \~ ~ echo \b hello in some terminals causes bold text and one line \[ENTER] second line means ignore the [ENTER] Key an handle everything as one line |
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11-18-2008
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If you have a file named "this$file" (the $ is part of the name), and you want to handle it with a shell you have to remove its special meaning for the shell (it is used to exctract variable data for example) by preceding it by a \
Code:
pobo@intrepid /tmp $ touch 'this$file' pobo@intrepid /tmp $ ls thi* this$file pobo@intrepid /tmp $ rm this$file rm: cannot remove `this': No such file or directory pobo@intrepid /tmp $ rm this\$file rm: remove regular empty file `this$file'? y pobo@intrepid /tmp $ |
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11-18-2008
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Thanks demwz,
as per my question its effect is to use the big lines in seperate lines for script readness the same while processing it is considered as single line. correct me if i am wrong. |
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11-18-2008
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yes you're right
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