tcsh

问题 I thought C shell script will behave like C and use short circuit evaluation for logical operators. if ((! -e $cache ) || ("`find $monitor -newer $cache`" != "")) then ... endif But in the if statement, even if the first condition is true, the second is checked giving me errors. Do we have a short circuit logical OR in C shell script? 回答1: Usually, && and || are short-circut. Consider something like this: $ false && echo foo $ true || echo foo In both cases, foo won't be put out. But, AFAIK

问题 I have a large number of .pbs files that I want to submit to a remote cluster. I want to be able to name the .pbs file something like "param1_123_param2_45.pbs", and then feed them into the ARGS for a Julia code. Below is an example .pbs of what I'm trying to do: 1 #!/bin/tcsh 2 #PBS -l mem=10gb,nodes=1:ppn=2,walltime=1:00:00 3 #PBS -j oe 4 #PBS -o ./log/julia.${PBS_JOBID}.out 5 #PBS -t 1-3 6 7 module load julia/1.5.1 python/3.8.1 8 9 cd path/to/file 10 11 julia Example.jl 123 45 Except 123 &

问题 I have a script that is used to set some env vars in the calling csh shell. Some of those variables depend on the location of the script. If the file is a proper csh script, I can use $0 to access __FILE__ but if I run the script using source, it just tells me csh or tcsh. Since I'm using this to set vars in the parent shell, I have to use source. What to do? 回答1: If you access $_ on the first line of the file, it will contain the name of the file if it's sourced. If it's run directly then $0

问题 I am trying to have an alias with if-then-else condition on a command result. the alias will get a file pattern if there is just one file it will open the file if there is more or less then 1 files - it will indicate with a message. the alias I have tried is: alias atest 'if \("ls \!:1" > 0 \) "nedit ls \!:1" else "echo cant open the file" ' 回答1: You can't do this with an alias. An alias can only expand into a one-line command, but if requires multiple lines. Instead, use a shell script. The

问题 I would like my tcsh script to launch an editor (e.g., vi, emacs): #!/bin/tcsh vi my_file This starts up vi with my_file but first displays a warning "Vim: Warning: Output is not to a terminal" and my keystrokes don't appear on the screen. After I kill vi, my terminal window is messed up (no newlines), requiring a "reset". I tried "emacs -nw", "xemacs -nw", and pico with similar results. "xemacs" works but launches a separate window. I want to reuse the same terminal window. Is there a way to

问题 Consider the following: #!/bin/tcsh set thing = 'marker:echo "quoted argument"' set a = `echo "$thing" | sed 's/\([^:]*\):\(.*\)/\1/'` set b = `echo "$thing" | sed 's/\([^:]*\):\(.*\)/\2/'` echo $a echo $b $b echo "quoted argument" This gives marker echo "quoted argument" "quoted argument" quoted argument If $b is echo "quoted argument" , why does evaluating $b give a different result from echo "quoted argument" ? Since I know tcsh is awful (but it's what I have to use for work), here is the

问题 I'm trying to run the following commands: replace -x "must " A2input.txt replace -x " a" -f -s ## A2input.txt replace -x to -s ## -a A2input.txt replace -x faith -f "unequivocal" A2input.txt And it'd be nice if I could just alias it to something short and simple like "a", "b", "c", "d", etc... However, some of those arguments have a quote, which is messing up the alias. Does anyone know how to actually escape the double quotes? I've tried things like '\"' and \" but nothing seems to work. I'm

问题 My prompt is currently displayed like here: [Aug-27 14:36] /x/y/z/w/u/v/dir1/dir2/dir3> What I would like to do is replace the constant partial-path of the current working directory /x/y/z/w/u/v with $WORK so eventually what will be displayed is [Aug-27 14:36] $WORK/dir1/dir2/dir3> /x/y/z/w/t/u is always the same path from which I usually do my work and for which I have a local variable $WORK set (very similar to the home ~ idea). A straight-forward solution will be most-welcomed as I really

问题 My prompt is currently displayed like here: [Aug-27 14:36] /x/y/z/w/u/v/dir1/dir2/dir3> What I would like to do is replace the constant partial-path of the current working directory /x/y/z/w/u/v with $WORK so eventually what will be displayed is [Aug-27 14:36] $WORK/dir1/dir2/dir3> /x/y/z/w/t/u is always the same path from which I usually do my work and for which I have a local variable $WORK set (very similar to the home ~ idea). A straight-forward solution will be most-welcomed as I really

问题 I'm using tcsh, and I'm trying to set a part of the PWD to appear always in the prompt (so I will always know in which "parent" directory I am). I managed to extract the needed part of the prompt in the following way, and it works fine (I call it MyTreePath ): set MyTreePath=`echo $PWD | awk '{... print whichTree}'` I've added the code above to my .tcshrc and I've added %$MyTreePath to my set prompt line in .tcshrc . The problem is that once the shell is opened, the MyTreePath doesn't change,