One way to discover these characters is to use the echo built-in command, and see which characters the C shell will echo, and which ones are treated special. He also wrote a significant part of the virtual memory, demand paging, and page replacement algorithm for Berkeley Unix. If the failing command is part of a build which is executing, the user may not see the actual error, but the symptom may be that the build fails. To clear a variable, set the variable to an empty string: set myvariable = "" to remove a variable, so it is no longer defined, use the unset command unset myvariable have a peek at these guys
ls -lFai df . Even though a script is connected to a pipe, you can ask the user for input. Expert: Well, it's your funeral. Testing for variable existenceThe Bourne shell lets you refer to variables that do not exist.
So you can specify echo $USER??.out and the shell will first evaluate the variable "USER," (to "barnett" in this case) and then perform the filename substitution, matching files like "barnett12.out" and log If you sometimes use the noclobber variable, you have to change your style to use the exclamation point when needed. Does anybody has a hint for me ? > Thanks in advance > Uwe Langer Top cannot determine current directory by Dean Neuman » Sat, 17 Oct 1998 Let's start with a simple way to branch.
However, the command set a = () empties the array, so variable $a does not exist. Regards, Chandraprakash Tomar. 9833979699 Join this group Best Answer Updated html error If this is directory where is mounted some filesystem try to do it when the filesystem is unmounted Help Toolbox.com is not affiliated with or endorsed by any company listed at this site. There is no equivalent to the [email protected] variable.
Join & Write a Comment Already a member? ls -ld .. But you shouldn't use it for scripts. This will cause problems for non-root users (as described earlier in this document).
First, as root I'll make the initial "underlying" directory and take away execute for owner and group.. # mkdir -m 700 /export/700 # chmod 777 /export # ls -ld /export/700 drwx------ In fact, it has some maddening exceptions, Let me elaborate. Using the backslashIf you want to use a meta-character as an ordinary character, place a backslash before it. It's covered with warts, but it does have some convenient features. Consider this: set a = "1 2 3" set b = $a Any sane person might expect that variables "b" and "a" have the same value.
Strings in double quotation marksThe last quoting mechanism is a string that starts and ends with the double-quote marks: rm "a b" This is similar to the single-quote form, but it More about the author You can either do nothing, ignore all signals, or trap all signals. On my host server, XYZ has proper group permission set to "sapsys.", which is properly nfs mounted on various server, The problem is with one of my cluster servers. Regards, Tim 0 LVL 22 Overall: Level 22 Unix OS 20 Message Expert Comment by:blu2009-04-16 Comment Utility Permalink(# a24157238) Sorry, I didn't see the truss you already posted.
Please review the following Document, I hope this addresses your issue:: ommands may mysteriously fail with permission related errors. _____ Symptoms Commands may mysteriously fail with permission related errors even though Top Best Answer 0 Mark this reply as the best answer?(Choose carefully, this can't be changed) Yes | No Saving... Without it, the C shell executes the $HOME/.cshrc file. http://softwaredevelopercertification.com/warning-cannot/warning-cannot-determine-ifnumber-for.php Also note that "b0" occurs twice.
Wonder why? (Hint: it is called the "C" shell for a reason.) The value $argv is equivalent to $1, and $argv is the same as $2. Suppose you wanted to optionally empty a file, removing all contents. If any of the characters inside the square brackets match the single character in the filename, the pattern with match.
These are the types of problems that sneak up on you when you don't expect them.
For instance, if you wanted to test standard input for the word "MATCH," and either add the word "BEFORE" if the match is found, or add "AFTER" if no match is Tim 0 LVL 22 Overall: Level 22 Unix OS 20 Message Expert Comment by:blu2009-04-16 Comment Utility Permalink(# a24156679) Okay, as root, do this: cd /cust/home/mzlbzl cd ../.. Here are fours ways to do this: rm 'a"b' rm a'"'b rm a"b rm "a"'"'"b" Here are some other examples: echo "The date command returns " '"' `date` '"' echo 'Here You can't.
The proper way to fix this problem is to umount the filesystem then open up (chmod) the permissions of the mountpoint directory then mount the filesystem again. pwd: cannot determine current directory! 4 post • Page:1 of 1 All times are UTC Board index Spam Report Log In E-mail or User ID Password Keep me signed in Then do the same thing as the user, and post the output to both. news Edits are subject to review by community moderators.
But this setup only lasts for the duration of the fix. And lo, UNIX shells learned to glob. We had a programmer whose job was to edit paper tapes, punching new holes, and splicing paper. difference should be seen by # getent group Top Best Answer 0 Mark this reply as the best answer?(Choose carefully, this can't be changed) Yes | No Saving...
Tagged with: pwd command, PWD variable, shell OLDPWD, EasyNext FAQ: SSH: WARNING: UNPROTECTED PRIVATE KEY FILE! Chandraprakash Tomar asked Sep 27, 2010 | Replies (19) Hi All, I got the following directory, drwxrwxrwx 11 root dba 512 Sep 7 17:34 XYZ which need to change as drwxrwxrwx One common use is to loop through the arguments of a script: #!/bin/csh # arguments are $* foreach i ( $* ) echo file $i has `wc -l <$i` lines end It doesn't matter.