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meaning of symbols like grave, !, @, ^,&,{}, \(back slash) etc.

Posted on 2004-09-22
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Last Modified: 2013-12-27
What's the meaning of symbols like grave, !, @, ^,&,{}, \(back slash) etc?

for example in man find page, {} means current pathname.

does current pathname mean path + filename?

Thanks.
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Question by:iamjhkang
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Expert Comment

by:liddler
ID: 12130999
These symbols (called metacharacters) mean slightly different things depending on which shell you are using, but generally
`` execute the command in the back ticks
'' hard quotes (ignore any metacharacter)
"" soft quotes used for spaces
& run in background
! not
\ escape

in the find command you mention {} means path and filename, so
find /tmp -name "*.tmp" -exec rm {} \;
lists allof the .tmp file in the tmp directory and passes them to rm and put them all on one line (escapes the ;)
so the rm command would look like
rm 1.tmp; rm 2.tmp ; rm 3.tmp
etc
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by:iamjhkang
ID: 12131433
Thanks.

Do you have any examples on other symbols?
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liddler earned 125 total points
ID: 12131560
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by:iamjhkang
ID: 12138959
Thanks a log.
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by:iamjhkang
ID: 12138963
lot*
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