Using forward slash in search pattern in perl script
I have existing pattern in the perl script as:
and I wanted to include below keywords in my search pattern
the problem is when I include my pattern like
I am not sure the forward slash used in I/O Exception will still be valid or not as forward slash is an special character.
Similar way I have existing code as:
Here also I wanted to include I/O Exception and FileNotFoundException.
to include like
is the right way?
I really do not understand regex and so facing problem please help.
Using the script: (Called replaceit)
#!/bin/ksh
String=$1
Replace=$2
sed -e "s/${orig}/${new}/g" oldfile.txt > newfile.txt
In oldfile.txt, I'm looking for: getenv("Work")
And change it To: /u/web
I execute the script:
replaceit "getenv(\""Work\"")" /u/web
I'm getting sed... (3 Replies)
how to escape / (forward slash) in a string.
I have following scnerio:
sed s/${var1}{$var2}
var1 and var2 both contain slashes, but sed gives error if there is a slash in var1 or var2. sed is used here to replace var1 with var2.
Thanks in advance (1 Reply)
Hi all,
I need to know way of inserting backward slash before forward slash. My problem is that i need to supply directory path as an argument while invoking cshell script. This argument is further used in script (i.e. sed is used to insert this path in some file). So i need to place \ in front... (2 Replies)
What is the significance of the forward slash(/) while specifying a directory?
cp -av /dir/ /opt/
and
cp -av /dir /opt
Does effectively the same job it seems? (2 Replies)
i need to replace '/' forward slash with \/(backward slash follwed by a forward slash) using sed command when the forward slash occurs as a first character in a file..
Tried something like this but doesn't seem to work.
find $1 -print0 | xargs -0 sed -i -e 's/^\//\\\//g'
Can someone... (19 Replies)
hi
hope somebody can help, there seems to be bit on the net about this, but still cant make it work the way i need.
i have a file live this
mm dd ff /dev/name1
mm dd ff /dev/name2
mm dd ff /dev/name3
mm dd ff /dev/name4
i need to update /dev/name1 etc to /newdev/new/name1 etc
so... (5 Replies)
Hi,
I have a tab delimited file "test.txt" like this:
id1 342 C/T
id2 7453 T/A/-/G/C
id3 531 T/C
id4 756 A/T/G
id5 23 A/G
id6 717 T/A/C
id7 718 C/T/A
And so on, with the possible choices for letters being A,C,T,G.
I would like to exclude from my file all the lines that do not have... (3 Replies)
I have some directories I am trying to sort. When I attempt to sort them and they are in this format, everything works great:
file
/vol/trees10
/vol/trees2
/vol/trees7
cat file |sort -ts -k2 -n
/vol/trees2
/vol/trees7
/vol/trees10
This makes thefiles in the order... (9 Replies)
./split2.sh: line 1: split/ssl/pop3s.txt: No such file or directory
sort: cannot read: split/ssl/pop3s.txt: No such file or directory
Hi there,
I am pulling data from the following source:
ssl/http
ssl/http
ssl/http-alt
ssl/https
ssl/https
ssl/https
ssl/https
ssl/https
ssl/https... (3 Replies)
Discussion started by: alvinoo
3 Replies
LEARN ABOUT DEBIAN
shellexp
SHELLEXP(3) Library Functions Manual SHELLEXP(3)NAME
shellexp - match string against a cruft filter pattern
SYNOPSIS
extern int shellexp(const char *string, const char *pattern);
DESCRIPTION
The shellexp() function is similar to fnmatch(3), but works with cruft patterns instead of standard glob(7) patterns. The function returns
a true value if string matches the cruft pattern pattern, and a false value (0) otherwise. Returns -1 in case of pattern syntax error.
Cruft patterns are similar to glob(7) patterns, but are not fully compatible. The following special characters are supported:
? (a question mark)
matches exacly one character of string other than a slash.
* matches zero or more characters of string other than a slash.
/** or /**/
matches zero or more path components in string. Please note that you can only use ** when directly following a slash, and further-
more, only when either directly preceding a slash or at the very end of pattern. A ** followed by anything other than a slash makes
pattern invalid. A ** following anything else than a slash reduces it to having the same effect as *.
[character-class]
Matches any character between the brackets exactly once. Named character classes are NOT supported. If the first character of the
class is ! or ^, then the meaning is inverted (matches any character NOT listed between the brackets). If you want to specify a
literal closing bracket in the class, then specify it as the first (or second, if you want to negate) character after the opening
bracket. Also, simple ASCII-order ranges are supported using a dash character (see examples section).
Any other character matches itself.
EXAMPLES
/a/b*/*c
matches /a/b/xyz.c, as well as /a/bcd/.c, but not /a/b/c/d.c.
/a/**/*.c
matches all of the following: /a/a.c, /a/b/a.c, /a/b/c/a.c and /a/b/c/d/a.c.
/a/[0-9][^0-9]*
matches /a/1abc, but not /a/12bc.
BUGS
Uses constant-length 1000 byte buffers to hold filenames. Also uses recursive function calls, which are not very efficient. Does not vali-
date the pattern before matching, so any pattern errors (unbalanced brackets or misplaced **) are only reported when and if the matching
algorithm reaches them.
SEE ALSO fnmatch(3), glob(3), cruft(8) and dash-search(1).
AUTHOR
This manual page was written by Marcin Owsiany <porridge@debian.org>, for the Debian GNU/Linux system (but may be used by others).
October 17, 2007 SHELLEXP(3)