Hi,
I want to change a particular string in a file with another string. This is part of a larger script file. I m using SED for this purpose:
sed -e 's/hostname.domainname/${HOST}.${DOMAIN}/g' $sed_file>$tmp_file
Where the occurance hostname.domainname has to be replaced with the... (4 Replies)
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
my script:
amount1=`tail /tmp/file1.txt`
amount2=`tail /tmp/file2.txt`
sed -e 's/'${amount2}'/'${amount1}'/g' filename1 > filename2
what did i do wrong ? i just want to replace amount1 with amount2 value. (2 Replies)
Hi,
i am following content in file
cat file
Install Installation-path variable
Now i need to replace Installation-path with some text to be provided as argument in csh script invocation
My question is , can i replace this by only using path
eg.
sed "s/path/$1" file
but it... (1 Reply)
I'm trying to change a "." in a file name with a "_"
I have tried;
sed -e 's/./_/g'
However this then replaces the entire filename with a load of "_"
For example;
ls /usr/local/feed/service/customers/test1/configs/test1.httpsend | awk -F/ '{print $9}' | tr "" "" | sed -e "s/./_/g"
... (2 Replies)
Hello,
I have a comman separated file lets day data.txt in following format
,:000002 CH XIN9I.INDX, 34.7534909645,:000002 CH,:Index XIN9I.INDX
,:000063 CH XIN9I.INDX, 6.3062924781,:000063 CH,:Index XIN9I.INDX
,:000776 CH XIN9I.INDX, 2.7001954832,:000776 CH,:Index XIN9I.INDX
I would like... (9 Replies)
Hi,
i have a file as give below
>cat sample_file
param1 val1 2012-06-19
##there can be one or more space after 2012-06-19 in the above file
i want to replace val1 with a with value passed through a variable...
below is the command i tried
>parval='param1 val2'
>par1=param1
>sed... (3 Replies)
How can we empty or replace with null, following block of code (within the php quotes including the quotes) from inside a file.
*** some other data above this code
<?
#317008#
... (5 Replies)
I have a file whose output words are always like this:
aaaa
bbbb
cccc
dddd. Trying to arrange the data so that there are 2 columns such that the 1st word become the 1st column like this:
aaaa aaaa
aaaa bbbb
aaaa cccc
aaaa dddd Trying to use awk... (8 Replies)
Discussion started by: jimmyf
8 Replies
LEARN ABOUT PLAN9
test
TEST(1) General Commands Manual TEST(1)NAME
test - set status according to condition
SYNOPSIS
test expr
DESCRIPTION
Test evaluates the expression expr. If the value is true the exit status is null; otherwise the exit status is non-null. If there are no
arguments the exit status is non-null.
The following primitives are used to construct expr.
-r file True if the file exists (is accessible) and is readable.
-w file True if the file exists and is writable.
-x file True if the file exists and has execute permission.
-e file True if the file exists.
-f file True if the file exists and is a plain file.
-d file True if the file exists and is a directory.
-s file True if the file exists and has a size greater than zero.
-t fildes True if the open file whose file descriptor number is fildes (1 by default) is the same file as /dev/cons.
s1 = s2 True if the strings s1 and s2 are identical.
s1 != s2 True if the strings s1 and s2 are not identical.
s1 True if s1 is not the null string. (Deprecated.)
-n s1 True if the length of string s1 is non-zero.
-z s1 True if the length of string s1 is zero.
n1 -eq n2 True if the integers n1 and n2 are arithmetically equal. Any of the comparisons -ne, -gt, -ge, -lt, or -le may be used in place
of -eq. The (nonstandard) construct -l string, meaning the length of string, may be used in place of an integer.
These primaries may be combined with the following operators:
! unary negation operator
-o binary or operator
-a binary and operator; higher precedence than -o
( expr ) parentheses for grouping.
The primitives -b, -u, -g, and -s return false; they are recognized for compatibility with POSIX.
Notice that all the operators and flags are separate arguments to test. Notice also that parentheses and equal signs are meaningful to rc
and must be enclosed in quotes.
EXAMPLES
Test is a dubious way to check for specific character strings: it uses a process to do what an rc(1) match or switch statement can do. The
first example is not only inefficient but wrong, because test understands the purported string "-c" as an option.
if (test $1 '=' "-c") echo OK # wrong!
A better way is
if (~ $1 -c) echo OK
Test whether is in the current directory.
test -f abc -o -d abc
SOURCE
/sys/src/cmd/test.c
SEE ALSO rc(1)TEST(1)