sh | ksh | csh | Meaning/Action |
---|---|---|---|
$ | $ | % | Prompt. |
>! | Force redirection. | ||
>>! | Force append. | ||
> file 2>&1 | > file 2>&1 | >& file | Combine stdout and stderr. |
{ } | Expand elements in list. | ||
` ` | $( ) | ` ` | Substitute output of enclosed command. |
$HOME | $HOME | $home | Home directory. |
~ | ~ | Home directory symbol. | |
var =value | var =value | set var =value | Variable assignment. |
export var | export var =val | setenv var val | Set environment variable. |
${nn } | More than 9 args can be referenced. | ||
"$@" | "$@" | All args as separate words. | |
$# | $# | $#argv | Number of arguments. |
$? | $? | $status | Exit status. |
$! | $! | Background exit status. | |
$- | $- | Current options. | |
. file | . file | source file | Read commands in file . |
alias x =y | alias x y | Name x stands for y . | |
case | case | switch/case | Choose alternatives. |
cd ~- | popd/pushd | Switch directories. | |
done | done | end | End a loop statement. |
esac | esac | endsw | End case or switch . |
exit [n ] | exit [n ] | exit [(expr )] | Exit with a status. |
for/do | for/do | foreach | Loop through variables. |
print -r | glob | Ignore echo escapes. | |
hash | alias -t | hashstat | Display hashed commands (tracked aliases). |
hash cmds | alias -t cmds | rehash | Remember command locations. |
hash -r | unhash | Forget command locations. | |
history | history | List previous commands. | |
r | !! | Redo previous command. | |
r str | !str | Redo command that starts with str . | |
r x =y cmd | !cmd :s/x /y / | Edit command, then execute. | |
if [ $i -eq 5 ] | if ((i==5)) | if ($i==5) | Sample if statement. |
fi | fi | endif | End if statement. |
ulimit | ulimit | limit | Set resource limits. |
pwd | pwd | dirs | Print working directory. |
read | read | $< | Read from terminal. |
trap 2 | trap 2 | onintr | Ignore interrupts. |
unalias | unalias | Remove aliases. | |
until | until | Begin until loop. | |
while/do | while/do | while | Begin while loop. |
These are the dumps from my daily learnings / challenges I faced in my work. hope it helps you too
Showing posts with label shell command differences. Show all posts
Showing posts with label shell command differences. Show all posts
Thursday, November 22, 2007
What differes in Bourne -Korn and CShell ???
Labels:
Bourne shell,
bsh,
csh,
Korn shell,
ksh,
shell command differences
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