tks, Mr Larry. I checked the sites you refered, but did not still quite figure out (partly because of my poor English?) the way bash works the way it does. To make things simple, just take up one case here. $PS1=\\\\u -4 returns \u the 1st \ escapes the 2nd \, and the 3rd one to the 4th one likewise. So $PS1=\\\\u is something like $PS1='\\u' ( which actually returns \u, not user name. It seems to me that when bash handles $PS1='\\u', 1st \ escapes the 2nd one and $PS1='\\u' seems equal to $PS1='\u' which returns user name. How shell recognize $PS1='\\u' and how shell return \u, not a user name? This problem is pestering me for 3 whole days. Please help! > >Larry Sword wrote: > >>ath1410 wrote: >> >> >> >>>Can someone help! I have been trying to explain the way bash >>>works as follows. >>> >>>$PS1=\\u -2 returns user >>>$PS1=\\\u -3 returns user >>>$PS1=\\\\u -4 returns \u >>>$PS1=\\\\\u -5 returns \u >>>$PS1=\\\\\\u -6 returns \user >>>$PS1=\\\\\\\u -7 returns \user >>>$PS1=\\\\\\\\u -8 returns \u >>>$PS1=\\\\\\\\\u -9 returns \u >>>$PS1=\\\\\\\\\\u -10 returns \user >>>$PS1=\\\\\\\\\\\u -11 returns \user >>>$PS1=\\\\\\\\\\\\u -12 returns \\u >>> >>>I can understand somewhere around; >>> >>>$PS1=\\\u -3 returns user >>> >>>But more than that, I can't figure out why bash respond >>>as it does. What the logic behind it? >>> >>> >>> >>> >>> >>Review the two HOWTO's: >> >>1. BASH Programming-Introduction HOW-TO >> >>and >> >>2. From Power Up to Bash Prompt >> >Should be: Bash Prompt HOWTO @ >http://www.linuxselfhelp.com/HOWTO/Bash-Prompt-HOWTO/ > >> >>This probable is answered as a string comparsion operators. >> >>Larry > > >Want to buy your Pack or Services from MandrakeSoft? >Go to http://www.mandrakestore.com """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" +---------+ * Get your own Jmail account.|URL= http://www.jmail.co.jp |--jmail--| * Get your own home page.|URL= http://www.servance.jp +---------+ * Get your own domain.|URL= http://domaintorou.com/ """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
