file exists


 
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# 1  
Old 06-14-2010
file exists

hello,


I want to know if a file exists, but do not know


Code:
contador = 0
while(file$contador exists)
do
  bla bla bla
 contador=$(($contador+1))
done

how can i do it?

thanks
# 2  
Old 06-14-2010
To check the existence of file use test ,if that will do check condition.
Code:
#!/bin/sh
for file in *
do
if [ -e $file ];then
echo $file
fi
done

# 3  
Old 06-14-2010
Hello again! ..Smilie

try with this:
Code:
contador=0
salir=0
while [ salir -eq 0 ]
do
   if [ -f fichero$contador ]
   then
      echo "fichero fichero$contador existe"
      contador=$(($contador+1))
   else
      salir=1
   fi
done

This User Gave Thanks to albertogarcia For This Post:
# 4  
Old 06-14-2010
Quote:
Originally Posted by albertogarcia
Hello again! ..Smilie

try with this:
Code:
contador=0
salir=0
while [ salir -eq 0 ]
do
   if [ -f fichero$contador ]
   then
      echo "fichero fichero$contador existe"
      contador=$(($contador+1))
   else
      salir=1
   fi
done

thanks Smilie!
you are big!!! que se diria en castellano! xD!

I will take your help. I have another paragraph, which does the following, you read line by line, but I also want to be: if line = 100 or when the last line of the file, I can do this as?

Code:
if [ $num_lineas -eq 100 OR FINALFICHERO ];

Can I do at different IF
# 5  
Old 06-14-2010
Quote:
Originally Posted by uri_crack
thanks Smilie!
you are big!!! que se diria en castellano! xD!

I will take your help. I have another paragraph, which does the following, you read line by line, but I also want to be: if line = 100 or when the last line of the file, I can do this as?

Code:
if [ $num_lineas -eq 100 OR FINALFICHERO ];

Can I do at different IF
Code:
 # ./findline findfile
100 line Installing hesiod-3.1.0-8.x86_64
last line Installing xulrunner-devel-1.9.0.12-1.el5_3.i386

Code:
 # cat findline

#!/bin/bash
i=0
lastline=$( (wc -l $1 | sed "s/$1//") )
while read line
  do
    let i=i+1
 if [ $i = 100 ] ; then
    echo " $i line $line "
fi
if [ $i = $lastline ] ; then
echo "last line $line "
fi
 done <$1

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